JP7710019B2 - Information management device, information management system, information management method and program - Google Patents

Description

The present invention relates to an information management device, an information management system, an information management method, and a program.

Conventionally, as shown in Patent Document 1, for example, information management systems have been disclosed that are controlled to a state in which a user can win a lottery for each of a number of divided periods based on the expected number of winners during a lottery period at a specified site. In such information management systems, the user is controlled to a state in which a user can win a lottery from the start of the divided period until the user wins the lottery, but once the user wins the lottery during the divided period, the user is controlled to a state in which the user cannot win the lottery. This makes it possible to provide users with an opportunity to win a lottery for each of the multiple divided periods into which the lottery period is divided.

JP 2006-4074 A

However, in this type of information management system, the timing at which a user does not win the lottery differs between when a lottery is held many times and when a lottery is held few times. For this reason, it is desirable to provide users with appropriate opportunities to win the lottery.

The information management device that solves the above problem includes a planned winning number acquisition unit that acquires the planned number of winnings during a lottery period at a specified site, an access history registration unit that registers accesses to the specified site and the date and time of access to the specified site as an access history, a winning probability acquisition unit that acquires the winning probability based on the planned winning number acquired by the planned winning number acquisition unit and the access history registered by the access history registration unit, and a lottery execution unit that performs a lottery in accordance with a user's instruction using the winning probability acquired by the winning probability acquisition unit.

The information management system that solves the above problem includes a planned winning number acquisition unit that acquires the planned number of winnings during a lottery period at a specified site, an access history registration unit that registers accesses to the specified site and the date and time of access to the specified site as an access history, a winning probability acquisition unit that acquires the winning probability based on the planned winning number acquired by the planned winning number acquisition unit and the access history registered by the access history registration unit, and a lottery execution unit that performs a lottery in response to a user's instruction with the winning probability acquired by the winning probability acquisition unit.

The information management method for solving the above problem involves one or more computers acquiring the number of expected winners during a lottery period at a specified site, registering accesses to the specified site and the date and time of access to the specified site as an access history, acquiring the probability of winning based on the expected number of winners and the access history, and conducting a lottery based on the winning probability in accordance with a user's instructions.

The program for solving the above problem causes one or more computers to obtain the number of expected winners during the lottery period at a specified site, register access to the specified site and the date and time of access to the specified site as an access history, obtain the probability of winning based on the expected number of winners and the access history, and hold a lottery based on the winning probability in accordance with a user's instructions.

According to the present invention, it is possible to appropriately provide users with an opportunity to win a lottery.

FIG. 1 is a diagram showing the overall configuration of an information management system according to the first embodiment. FIG. 2 is a diagram showing the electrical configuration of the terminal device of the first embodiment. FIG. 3 is a diagram showing the electrical configuration of the information management device of the first embodiment. FIG. 4 is a diagram showing the access history database of the first embodiment. FIG. 5 is a diagram showing the lottery result database of the first embodiment. FIG. 6 is a diagram illustrating the event management database according to the first embodiment. FIG. 7 is a diagram showing a lottery implementation period in the first embodiment. FIG. 8 is a diagram showing a winning probability acquisition table in the first embodiment. FIG. 9 is a flowchart showing the event registration process according to the first embodiment. FIG. 10 is a flowchart showing the access history management process according to the first embodiment. FIG. 11 is a flowchart showing the winning probability control process of the first embodiment. FIG. 12 is a flowchart showing the lottery control process according to the first embodiment.

[First embodiment]
An embodiment of an information management device, an information management system, an information management method, and a program will be described.

<Configuration of Information Management System 10>
As shown in Fig. 1, the information management system 10 is a system that manages information. The information management system 10 is a system that performs control related to a predetermined site. The predetermined site is a site where a lottery event is held. In other words, the information management system 10 is a system that performs control related to a lottery event at the predetermined site.

The information management system 10 includes an information management device 11. The information management device 11 is a device that manages information. In particular, the information management device 11 is a device that manages a specific site. The information management device 11 is a device that controls lottery events at the specific site.

The information management system 10 may include one or more terminal devices 18. As a specific example, the information management system 10 may include a user terminal device 18A and an advertising terminal device 18B. The user terminal device 18A is a terminal device used by a user. The user terminal device 18A may be a portable terminal device that can be carried by a user. The advertising terminal device 18B may be a terminal device used by an advertising provider.

The information management device 11 and one or more terminal devices 18 are communicatively connected via a network 19. At least any combination of the information management device 11 and one or more terminal devices 18 may be communicatively connected directly without via the network 19. Hereinafter, a description of communication between the devices via the network 19 will be omitted.

<Configuration of terminal device 18>
2, the terminal device 18 is composed of one or more computers. The terminal device 18 includes a terminal control unit 20, a terminal storage unit 21, a terminal communication unit 22, a terminal input unit 23, and a terminal display unit 24.

The terminal control unit 20 is configured to control the terminal device 18. The terminal control unit 20 includes a calculation device and a main storage medium. The calculation device loads an OS (Operating System) and a program from the terminal storage unit 21 to the main storage medium, and executes instructions retrieved from the main storage medium. The calculation device is one or more circuits. The circuit may be a CPU (Central Processing Unit), a GPU (Graphic Processing Unit), or an NPU (Neural network Processing Unit). The terminal storage unit 21 may be a secondary storage medium and may store a program. The program may be a dedicated application for using the information management system 10.

The terminal communication unit 22 is implemented as hardware, software, or a combination of these. The terminal communication unit 22 transmits and receives data to and from the information management device 11. The terminal input unit 23 is configured to input information in response to a user's operation. The terminal input unit 23 may be a touch panel integrated with the terminal display unit 24. The terminal input unit 23 may be a pointing device for operation buttons. The terminal display unit 24 displays information in response to an output instruction from the terminal control unit 20.

<Configuration of information management device 11>
As shown in Fig. 3, the information management device 11 is composed of one or more computers. The information management device 11 includes a control unit 30, a storage unit 31, and a communication unit 32. The control unit 30 is configured to control the information management device 11. The control unit 30 includes a calculation device and a main storage medium. The control unit 30 has a similar configuration to the terminal control unit 20, and a description of the calculation device and the main storage medium will be omitted. The storage unit 31 is a secondary storage medium, and stores information for managing the information management device 11.

The communication unit 32 is implemented as hardware, software, or a combination of these. The communication unit 32 transmits and receives data to and from the terminal device 18. The information management device 11 may include an operation unit that allows the information provider to perform input operations, and may include a display unit that displays information.

<Processing circuit of information management device 11>
In the information management device 11, the control unit 30 configures a processing circuit by executing a program. The control unit 30 includes, as the processing circuit, an expected number of wins acquisition unit 30A, an access history registration unit 30B, a user attribute information acquisition unit 30C, an estimation unit 30D, and a winning probability acquisition unit 30E. The control unit 30 includes, as the processing circuit, a lottery execution unit 30F, a lottery result registration unit 30G, an advertisement provision unit 30H, and a reward granting unit 30I.

The expected number of winners acquisition unit 30A acquires the expected number of winners. In particular, the expected number of winners acquisition unit 30A acquires the expected number of winners during the lottery implementation period at the specified site. The expected number of winners acquisition unit 30A acquires the expected number of winners in accordance with instructions from the advertisement provider.

The access history registration unit 30B registers the access history to the specified site. The access history to the specified site includes the access to the specified site and the date and time of the access to the specified site. In other words, the access history registration unit 30B registers the access to the specified site and the date and time of the access to the specified site as the access history. The access history to the specified site may also include the users who accessed the specified site. In other words, the access history registration unit 30B may register the access to the specified site, the date and time of the access to the specified site, and the users who accessed the specified site as the access history.

The user attribute information acquisition unit 30C acquires user attribute information. The user attribute information may include user segment information. The user attribute information may include the user's age, gender, and address. The user attribute information may include the user's behavioral history.

The user attribute information may include information indicating the degree of registration for use of multiple services. As a specific example, the user attribute information may include whether the user has registered to use an e-commerce service, and whether the user has registered to use an e-commerce service and a travel service. In other words, the user attribute information may be information indicating royalties associated with use of multiple services.

The estimation unit 30D estimates the estimated number of accesses to the specified site. The estimation unit 30D estimates the estimated number of accesses to the specified site based on the access history. The estimated number of accesses is the number of accesses that are estimated to be made to the specified site. The number of accesses is simply accesses to the specified site, and it does not matter whether a lottery is held at the specified site. The number of accesses may not be simply accesses to the specified site, but may be the fact that a lottery is held at the specified site.

The estimation unit 30D estimates the estimated number of accesses to the specified site for each of a number of divided periods into which the lottery implementation period is divided. The lottery implementation period is the overall period during which the lottery event is held. The divided periods are periods into which the lottery implementation period is divided. As a specific example, the lottery implementation period may be three months and each divided period may be one day.

In more detail, the estimation unit 30D obtains the number of visits to a specific site in a reference period that includes the same conditions as the current period in a current period among a plurality of divided periods. The estimation unit 30D estimates the estimated number of visits to the specific site in the current period based on the number of visits to the specific site in the reference period.

The winning probability acquisition unit 30E acquires the winning probability. The winning probability acquisition unit 30E acquires the winning probability based on the expected number of winnings and the access history. The winning probability acquisition unit 30E acquires the winning probability based on the remaining expected number of winnings and the access history. The remaining expected number of winnings is the number obtained by subtracting the actual number of winnings from the expected number of winnings during the lottery implementation period.

The winning probability acquisition unit 30E acquires the winning probability based on the estimated number of accesses to the specified site. In other words, the winning probability acquisition unit 30E acquires the winning probability based on the expected number of wins and the estimated number of accesses to the specified site.

The winning probability acquisition unit 30E acquires the winning probability for each of the multiple divided periods. The winning probability acquisition unit 30E divides the expected winning number into divided expected winning numbers for each of the multiple divided periods. The divided expected winning number is the number obtained by dividing the expected winning number corresponding to the lottery implementation period for each of the multiple divided periods. The winning probability acquisition unit 30E acquires the winning probability for each of the multiple divided periods based on the divided expected winning numbers obtained by dividing the expected winning number.

As a specific example, when the estimated number of accesses to the specified site is the first estimated number of accesses, the winning probability acquisition unit 30E acquires a higher winning probability than when the estimated number of accesses to the specified site is the second estimated number of accesses. The second estimated number of accesses is a number greater than the first estimated number of accesses.

The winning probability acquisition unit 30E acquires the winning probability based on the number of expected winnings, the access history, and the correction value. The correction value is a value for lowering the winning probability. The correction value is a value for preventing the remaining number of expected winnings from being excessively reduced. The correction value may be used in some divided periods of the lottery implementation period.

The lottery execution unit 30F performs the lottery. The lottery execution unit 30F performs the lottery in response to a user's instruction. In particular, the lottery execution unit 30F performs the lottery based on the winning probability acquired by the winning probability acquisition unit 30E. The lottery result registration unit 30G registers the lottery result.

The advertisement provision unit 30H provides advertisements to the user. The advertisement provision unit 30H provides advertisements in response to instructions from the user. In particular, the advertisement provision unit 30H provides advertisements submitted in response to instructions from the advertisement provider to the user.

The reward granting unit 30I grants a reward to the user. The reward granting unit 30I grants a reward to the user when the reward granting condition is met. In particular, the reward granting unit 30I grants a reward to the user when the user wins the lottery.

The reward may be points that can be used in a specific service. The reward value may be the number of points. The reward may be usable across multiple services with the same administrator, or across multiple services with different administrators. The reward may be a benefit for the user.

<User management database>
The storage unit 31 stores a user management database, in which a user ID, a password, a user address, a user contact address, user attribute information, and a reward value are associated with each other.

<Access History Database 31A>
4, the storage unit 31 stores an access history database 31A. The access history database 31A is a database for managing the history of accesses to predetermined sites.

In the access history database 31A, an access ID, date and time information, a user ID, and user attribute information are associated with each other. The access ID is information that can identify an access to a specific site.

<Lottery result database 31B>
5, the storage unit 31 stores a lottery result database 31B. The lottery result database 31B is a database for managing lottery results at a specific site. In particular, the lottery result database 31B is a database for managing lottery results executed during a lottery implementation period in a lottery event at the specific site.

In the lottery result database 31B, a lottery ID, an event ID, date and time information, a user ID, user attribute information, and a lottery result are associated with each other. The lottery ID is information that can identify a lottery. The event ID is information that can identify a lottery event. The lottery result is information that can identify whether the lottery was won or lost.

<Event Management Database 31C>
6, the storage unit 31 stores an event management database 31C. The event management database 31C is a database for managing lottery events. In particular, the event management database 31C is a database for managing the expected number of winners and the probability of winning in the lottery event.

In the event management database 31C, the event ID, the lottery period, the number of expected winners, and the number of remaining expected winners are associated. In the event management database 31C, the event ID is associated with a number of divided periods. In the event management database 31C, the divided period, the period type, the probability of winning, and the number of wins are associated.

The expected number of winners is the number of lottery winners expected to occur during the lottery period. The expected number of winners may be set according to instructions from the advertising provider. The remaining expected number of winners is the number of lottery winners during the lottery period minus the actual number of winners. In this way, the remaining expected number of winners is the same as the expected number of winners when the lottery period begins, but is subtracted if a lottery winner occurs.

The multiple split periods are periods obtained by splitting the lottery period corresponding to the event ID into multiple periods. The period type is information indicating the type of the split period. The method of calculating the winning probability differs depending on the period type. The winning probability is the lottery probability corresponding to the split period. The winning probability may be set when the split period begins. The number of wins indicates the number of lottery wins in the split period.

As shown in FIG. 7, the period type may include a first period type, a second period type, and a third period type. The first period type may be set to an early divided period of the lottery implementation period. Hereinafter, a divided period classified as the first period type will be referred to as the first divided period. The second period type may be set to a middle divided period of the lottery implementation period. Hereinafter, a divided period classified as the second period type will be referred to as the second divided period. The third period type may be set to a final divided period of the lottery implementation period. Hereinafter, a divided period classified as the third period type will be referred to as the third divided period. As a specific example, the lottery implementation period may be three months, the first divided period may be the first week, and the third divided period may be the last two weeks.

<Winning Probability Acquisition Table 31D>
8, the memory unit 31 stores a winning probability acquisition table 31D. The winning probability acquisition table 31D is a table for acquiring the winning probability. In the winning probability acquisition table 31D, the period type is associated with a calculation method of the winning probability.

As a specific example, the first divided period is associated with a calculation method of dividing the planned divided winning number by the provisional number of accesses. The planned divided winning number may be the result of dividing the remaining planned winning number by the number of remaining divided periods. The provisional number of accesses is the number of accesses that corresponds to the first divided period at the beginning of the lottery implementation period, and an upper limit is set on the number of accesses that are expected to be made to the specified site.

The second division period is associated with a calculation method in which the estimated number of accesses is divided by the planned number of split wins and the result is multiplied by a correction value. The third division period is associated with a calculation method in which the estimated number of accesses is divided by the planned number of split wins.

The probability of winning decreases as the provisional access count and estimated access count increase. In particular, the probability of winning is higher in a divided period in which the estimated number of accesses is estimated to be low than in a divided period in which the estimated number of accesses is estimated to be high. The correction value is a value less than 1. In other words, the correction value is a value for decreasing the probability of winning.

<How to determine the winning probability>
As shown in Fig. 7, the method of determining the winning probability in the second and third divided periods is to refer to the number of accesses in the reference period in the current period. The current period is one of the multiple divided periods in the lottery implementation period that includes the current time. The reference period is one of the multiple divided periods in the lottery implementation period that is a period prior to the current period and includes the same conditions as the current period.

For the current period, the number of accesses during the reference period is calculated as the estimated number of accesses for the current period based on the access history for the reference period. The probability of winning is determined based on the planned number of split wins and the estimated number of accesses.

To give a specific example, if the split period is one day and the current period is a Saturday, the Saturday split period prior to the current period, which includes the same condition of day of the week, is referenced as the reference period. Based on the access history of the reference period, if the number of accesses in the reference period is greater, the estimated number of accesses in the current period is calculated as the greater number. As a result, the probability of winning is determined as low based on the planned number of split wins and the estimated number of accesses.

<Event registration process>
The event registration process will now be described with reference to Fig. 9. The event registration process is executed by the control unit 30 at predetermined intervals. The following process will be described on the assumption that authentication of the advertisement provider has been normally performed.

In step S10, the control unit 30 determines whether or not an event registration request has been made from the advertising terminal device 18B. The event registration request includes the advertisement to be submitted and event information related to the event. The event registration request may include information that can identify the advertising cost for providing the advertisement. If the control unit 30 determines that an event registration request has not been made, it ends the event registration process. If the control unit 30 determines that an event registration request has been made, it proceeds to step S11.

In step S11, the control unit 30 executes an advertisement submission process. In the advertisement submission process, the control unit 30 acquires the advertisement included in the event registration request and registers it in the storage unit 31. In this way, the control unit 30 acquires the advertisement in accordance with the instructions of the advertisement provider.

In step S12, the control unit 30 executes an event information acquisition process. In the event information acquisition process, the control unit 30 acquires the event information included in the event registration request. In detail, the control unit 30 acquires the lottery implementation period, the multiple divided periods, and the period type.

In step S13, the control unit 30 executes a process for obtaining the number of expected winners. In the process for obtaining the number of expected winners, the control unit 30 obtains the number of expected winners. In detail, the control unit 30 obtains the number of expected winners that corresponds to information that can identify the advertising cost included in the event registration request. As a specific example, when the advertising cost included in the event registration request is high, the control unit 30 obtains a larger number of expected winners than when the advertising cost included in the event registration request is low.

In this way, the control unit 30 obtains the number of expected winners during the lottery period at the specified site. In particular, the control unit 30 obtains the number of expected winners during the lottery period at the specified site in response to instructions from the advertising provider.

In step S14, the control unit 30 executes an event information registration process. In the event information registration process, the control unit 30 registers the event information acquired in step S12 in the event management database 31C. The control unit 30 registers the expected number of winners acquired in step S13 in the event management database 31C.

<Access history management process>
Next, the access history management process will be described with reference to Fig. 10. The access history management process is executed by the control unit 30 at predetermined intervals. The following process will be described on the assumption that the user authentication process has been performed normally.

In step S20, the control unit 30 determines whether or not the specified site has been accessed. If the control unit 30 determines that the specified site has not been accessed, it ends the access history management process. If the control unit 30 determines that the specified site has been accessed, it proceeds to step S21.

In step S21, the control unit 30 executes a user information acquisition process. In the user information acquisition process, the control unit 30 acquires the user ID of the user who accessed the specified site. This enables the control unit 30 to recognize the user who accessed the specified site.

In step S22, the control unit 30 executes a user attribute information acquisition process. In the user attribute information acquisition process, the control unit 30 acquires attribute information of a user corresponding to the user ID who accessed the specified site from the user management database. This enables the control unit 30 to recognize the attribute information of the user who accessed the specified site.

In step S23, the control unit 30 executes an access history registration process. In the access history registration process, the control unit 30 registers an access history in the access history database 31A in association with an access to a specific site. In detail, the control unit 30 generates an access ID. The control unit 30 registers an access history in the access history database 31A, in which the access ID, date and time information, user ID, and user attribute information correspond.

In this way, the control unit 30 registers access to the specified site and the date and time of access to the specified site as an access history. In more detail, the control unit 30 registers access to the specified site, the date and time of access to the specified site, and the user who accessed the specified site as an access history.

<Winning Probability Control Process>
Next, the winning probability control process will be described with reference to Fig. 11. The winning probability control process is a process executed by the control unit 30 at predetermined intervals.

In step S30, the control unit 30 refers to the current time and the event management database 31C to determine whether or not it is the start of a split period. If the control unit 30 determines that it is not the start of a split period, it ends the winning probability control process. If the control unit 30 determines that it is the start of a split period, it transitions to step S31.

In step S31, the control unit 30 executes a process for obtaining the remaining number of expected wins. In the process, the control unit 30 refers to the event management database 31C to obtain the remaining number of expected wins.

In step S32, the control unit 30 executes a process for obtaining the number of remaining divided periods. In the process for obtaining the number of remaining divided periods, the control unit 30 refers to the event management database 31C and obtains the number of remaining divided periods.

In step S33, the control unit 30 refers to the current time and the event management database 31C to determine whether or not it is the start of the first divided period. If the control unit 30 determines that it is the start of the first divided period, it proceeds to step S34. If the control unit 30 determines that it is not the start of the first divided period, it proceeds to step S35.

In step S34, the control unit 30 executes a provisional access count acquisition process. In the provisional access count acquisition process, the control unit 30 reads out the provisional access count from the storage unit 31. As a result, the control unit 30 acquires the provisional access count corresponding to the current period as the first division period.

In step S35, the control unit 30 executes an estimated number of accesses acquisition process. In the estimated number of accesses acquisition process, the control unit 30 estimates an estimated number of accesses corresponding to the current period as the second division period or the third division period.

In more detail, the control unit 30 refers to the event management database 31C and refers to a divided period that precedes the current period. The control unit 30 acquires, from among the referenced divided periods, a period that includes the same conditions as the current period as the reference period. The control unit 30 acquires the number of accesses corresponding to the reference period from the access history database 31A.

In other words, the control unit 30 obtains the number of accesses to a specific site during a reference period that includes the same conditions as the current period based on the access history. The control unit 30 estimates the number of accesses during the reference period as the estimated number of accesses during the current period.

The control unit 30 may obtain, as reference periods, multiple periods that include the same conditions as the current period among the referenced divided periods. In this case, the control unit 30 may obtain, from the access history database 31A, the average number of accesses corresponding to the multiple divided periods as the reference periods.

In this way, the control unit 30 estimates the estimated number of accesses to the specified site based on the access history. The control unit 30 also estimates the estimated number of accesses to the specified site for each of the multiple divided periods. In particular, the control unit 30 estimates the estimated number of accesses to the specified site in the current period based on the number of accesses to the specified site in the reference period.

In step S36, the control unit 30 refers to the current time and the event management database 31C to determine whether or not it is the start of the second divided period. If the control unit 30 determines that it is the start of the second divided period, it proceeds to step S37. If the control unit 30 determines that it is not the start of the second divided period, it proceeds to step S38.

In step S37, the control unit 30 executes a correction value acquisition process. In the correction value acquisition process, the control unit 30 reads out the correction value from the storage unit 31. In this way, the control unit 30 acquires the correction value to be used in the second division period.

In step S38, the control unit 30 executes a process for obtaining the number of planned split wins. In the process for obtaining the number of planned split wins, the control unit 30 obtains the number of planned split wins. In detail, the control unit 30 obtains the number of planned split wins by dividing the remaining number of planned wins obtained in step S31 by the remaining number of split periods obtained in step S32.

In step S39, the control unit 30 executes a winning probability acquisition process. In the winning probability acquisition process, the control unit 30 acquires the winning probability for each of the multiple divided periods. The control unit 30 refers to the winning probability acquisition table 31D and acquires the winning probability using a calculation method corresponding to the period type.

In particular, in the first divided period, the control unit 30 obtains the winning probability for each of the multiple divided periods based on the number of planned divided wins and the number of provisional accesses in the current period. In other words, the control unit 30 obtains the winning probability based on the remaining planned number of wins, the number of remaining divided periods, and the number of provisional accesses.

In the second and third divided periods, the control unit 30 obtains the winning probability for each of the multiple divided periods based on the planned number of divided wins and the estimated number of accesses in the current period. In other words, the control unit 30 obtains the winning probability based on the remaining planned number of wins, the remaining number of divided periods, and the estimated number of accesses. In particular, in the second divided period, the control unit 30 obtains the winning probability based on the correction value.

In this way, the control unit 30 obtains the probability of winning based on the expected number of winners and the access history. Furthermore, when the estimated number of accesses is the first estimated number of accesses, the control unit 30 obtains a higher probability of winning than when the estimated number of accesses is the second estimated number of accesses.

In step S40, the control unit 30 executes a winning probability registration process. In the winning probability registration process, the control unit 30 registers the winning probability acquired in step S39 in the event management database 31C so that it corresponds to the current period.

<Lottery control process>
Next, the lottery control process will be described with reference to Fig. 12. The lottery control process is a process executed by the control unit 30 at predetermined intervals.

In step S50, the control unit 30 determines whether or not a lottery instruction has been issued by the user through communication with the user terminal device 18A. A lottery instruction is an instruction issued by the user after accessing a specific site, but may be the act of accessing the specific site itself. If the control unit 30 determines that a lottery instruction has not been issued by the user, it ends the lottery control process. If the control unit 30 determines that a lottery instruction has been issued by the user, it transitions to step S51.

In step S51, the control unit 30 executes a winning probability reference process. In the winning probability reference process, the control unit 30 references the event management database 31C and identifies the divided period corresponding to the current time as the current period. The control unit 30 reads out the winning probability corresponding to the current period from the event management database 31C.

In step S52, the control unit 30 executes an advertisement provision process. In the advertisement provision process, the control unit 30 transmits the advertisement stored in the storage unit 31 to the user terminal device 18A that received the lottery instruction. In this way, the control unit 30 provides the advertisement submitted in response to the instruction of the advertisement provider in response to the instruction of the user.

In step S53, the control unit 30 determines whether the lottery conditions are met. The lottery conditions may be met when viewing of the advertisement is completed before a predetermined time has elapsed. In this case, the control unit 30 determines that the lottery conditions are met when it determines through communication with the user terminal device 18A that viewing of the advertisement is completed before a predetermined time has elapsed. If the control unit 30 determines that the lottery conditions are not met, it ends the lottery control process. If the control unit 30 determines that the lottery conditions are met, it transitions to step S54.

In step S54, the control unit 30 executes a lottery execution process. In the lottery execution process, the control unit 30 performs a lottery in response to a user instruction with the winning probability referenced in step S51. In other words, the control unit 30 performs a lottery in response to a user instruction with the winning probability acquired in step S39 of the winning probability control process.

In step S55, the control unit 30 executes a lottery result registration process. In the lottery result registration process, the control unit 30 registers the lottery result in the lottery result database 31B. In detail, the control unit 30 generates a lottery ID. The control unit 30 acquires user attribute information corresponding to the user ID. The control unit 30 associates the lottery ID, event ID, date and time information, user ID, user attribute information, and lottery result, and registers them in the lottery result database 31B. In this way, the control unit 30 registers the executed lottery result.

In addition, if a lottery is won, the control unit 30 updates the event management database 31C to increase the number of wins corresponding to the current period by 1 and decrease the remaining number of expected wins corresponding to the event ID by 1.

In step S56, the control unit 30 executes a lottery result transmission process. In the lottery result transmission process, the control unit 30 transmits the lottery result to the user terminal device 18A. In the user terminal device 18A, the terminal control unit 20 causes an image showing the lottery result to be displayed on the terminal display unit 24. This allows the control unit 30 to provide the lottery result to the user.

In step S57, the control unit 30 determines whether or not the lottery has been won. If the control unit 30 determines that the lottery has not been won, the control unit 30 ends the lottery control process. If the control unit 30 determines that the lottery has been won, the control unit 30 proceeds to step S58.

In step S58, the control unit 30 executes a reward granting process. In the reward granting process, the control unit 30 adds a predetermined reward value to the reward value corresponding to the user ID. In this way, the control unit 30 grants a reward to the user if the user wins the lottery.

<Actions and Effects of First Embodiment>
The operation and effects of the first embodiment will be described.
(1-1) The control unit 30 acquires the probability of winning based on the number of expected winners during the lottery implementation period at the specified site and the access history to the specified site. Therefore, the lottery can be executed with a dynamic probability of winning that takes into account the number of times the lottery is held, based on the access to the specified site. This makes it possible to prevent the number of winners from reaching the expected number of wins and the number of winners in the current period from reaching the expected number of divided wins, resulting in a state where the lottery is not won. In this way, the continuity of the opportunity to win the lottery can be improved. Therefore, it is possible to appropriately provide the user with an opportunity to win the lottery.

(1-2) The control unit 30 estimates the estimated number of accesses to the specified site based on the access history. The control unit 30 obtains the winning probability based on the expected number of wins and the estimated number of accesses. Therefore, the lottery can be executed with a dynamic winning probability that takes into account the number of times the lottery is held, based on the estimated number of accesses to the specified site. This makes it possible to prevent the number of wins from reaching the expected number of wins, and to prevent the number of wins in the current period from reaching the expected number of divided wins, resulting in a state where the lottery is not won. In this way, the continuity of opportunities to win the lottery can be improved. Therefore, it is possible to appropriately provide users with opportunities to win the lottery.

(1-3) The control unit 30 obtains the probability of winning for each of the multiple divided periods based on the divided number of expected wins obtained by dividing the number of expected wins for each of the multiple divided periods. Therefore, the probability of winning is set for each of the multiple divided periods obtained by dividing the lottery implementation period. This makes it possible to adjust the probability of winning for each of the multiple divided periods. Therefore, it is possible to appropriately provide the user with an opportunity to win the lottery.

(1-4) The control unit 30 estimates the estimated number of accesses for each of the multiple divided periods based on the access history. The control unit 30 obtains the winning probability for each of the multiple divided periods based on the estimated number of accesses and the planned number of divided wins. Therefore, it is possible to execute a lottery with a dynamic winning probability that takes into account the number of times the lottery is held, based on the estimated number of accesses estimated for each of the multiple divided periods. This makes it possible to prevent the number of wins from reaching the planned number of wins, and to prevent the number of wins in the current period from reaching the planned number of divided wins, resulting in a state where the lottery is not won. In this way, the continuity of opportunities to win the lottery can be improved. Therefore, it is possible to appropriately provide users with opportunities to win the lottery.

(1-5) The control unit 30 estimates the estimated number of accesses in the current period based on the number of accesses to a specified site in a reference period that includes the same conditions as the current period. This makes it possible to execute a lottery with a dynamic probability of winning that takes into account the number of times the lottery is held, based on the number of accesses in a reference period that includes the same conditions as the current period. This makes it possible to prevent the number of wins from reaching the planned number of wins and to prevent the number of wins in the current period from reaching the planned number of divided wins, resulting in a situation where no wins are made in the lottery. In this way, the continuity of opportunities to win the lottery can be improved. Therefore, it is possible to appropriately provide users with opportunities to win the lottery.

(1-6) When the estimated number of accesses is the first estimated number of accesses, the control unit 30 obtains a higher probability of winning than when the estimated number of accesses is the second estimated number of accesses, which is greater than the first estimated number of accesses. For this reason, a small estimated number of accesses results in a higher probability of winning, and a large estimated number of accesses results in a lower probability of winning. This makes it possible to prevent the number of wins from reaching the planned number of wins and to prevent the number of wins in the current period from reaching the planned number of divided wins, resulting in a situation where the user does not win the lottery. In this way, it is possible to improve the continuity of opportunities to win the lottery. Therefore, it is possible to appropriately provide users with opportunities to win the lottery.

(1-7) The control unit 30 obtains the probability of winning based on the remaining number of expected wins, calculated by subtracting the number of actual wins from the expected number of wins, and the access history. This makes it possible to execute the lottery with a dynamic probability of winning that takes into account the remaining number of expected wins based on the number of actual wins. This makes it possible to prevent the number of wins from reaching the expected number of wins, and to prevent the number of wins in the current period from reaching the divided expected number of wins, resulting in a state where the lottery is not won. In this way, the continuity of opportunities to win the lottery can be improved. Therefore, it is possible to appropriately provide users with opportunities to win the lottery.

(1-8) The control unit 30 provides the advertisement submitted in response to the instructions of the advertisement provider in response to the instructions of the user. The control unit 30 acquires the number of expected winners during the lottery period at the specified site in response to the instructions of the advertisement provider. Therefore, the advertisement submitted in response to the instructions of the advertisement provider is provided to the user, and the number of expected winners is provided in response to the instructions of the advertisement provider. In this way, the number of expected winners can also be provided in response to the provision of the advertisement.

(1-9) The control unit 30 awards a reward to the user if the user wins the executed lottery. Therefore, the control unit 30 can appropriately control the probability of winning in a high-value lottery for which a reward can be awarded. Therefore, the control unit 30 can appropriately provide the user with an opportunity to win the lottery.

(1-10) The control unit 30 obtains the probability of winning based on the expected number of winnings, the access history, and a correction value for lowering the probability of winning. Therefore, the correction value can be used to lower the probability of winning. This makes it possible to prevent the number of winnings from reaching the expected number of winnings and the number of winnings in the current period from reaching the expected number of divided winnings, resulting in a state where the lottery is not won. In this way, the continuity of opportunities to win the lottery can be improved. Therefore, it is possible to appropriately provide users with opportunities to win the lottery.

[Second embodiment]
Next, a second embodiment will be described. In the following description, the same components as those in the already described embodiment are denoted by the same reference numerals, and duplicated descriptions thereof will be omitted or simplified.

<Odds of winning>
In the second embodiment, a winning probability may be set for each attribute information of a user. In detail, a first winning probability may be set for a first user whose attribute information is the first attribute information, and a second winning probability may be set for a second user whose attribute information is the second attribute information. As a specific example, a first winning probability is set for a first user whose degree of registration for the service is low. A second winning probability higher than the first winning probability is set for a second user whose degree of registration for the service is high.

<Winning Probability Control Process>
In the second embodiment, in step S35 of the winning probability control process shown in Fig. 11, the control unit 30 acquires the number of accesses in the reference period based on the access history of the first user and the access history of the second user. The control unit 30 estimates the number of accesses in the reference period as the estimated number of accesses in the current period.

The control unit 30 obtains the number of accesses of the first user in the reference period based on the access history of the first user. The control unit 30 estimates the number of accesses of the first user in the reference period as the estimated number of accesses of the first user in the current period.

The control unit 30 obtains the number of accesses by the second user in the reference period based on the access history of the second user. The control unit 30 estimates the number of accesses by the second user in the reference period as the estimated number of accesses by the second user in the current period.

In step S34, the control unit 30 acquires a first provisional access count corresponding to the first user from the storage unit 31. The control unit 30 acquires a second provisional access count corresponding to the second user from the storage unit 31.

In step S38, the control unit 30 obtains the planned number of split wins, and then obtains a first planned number of split wins and a second planned number of split wins based on the planned number of split wins. The first planned number of split wins is the planned number of split wins for obtaining the first winning probability. The second planned number of split wins is the planned number of split wins for obtaining the second winning probability.

In particular, in the case of the second or third division period, the control unit 30 divides the planned split winning number into a first planned split winning number and a second planned split winning number based on the ratio between the first estimated access number and the second estimated access number. The control unit 30 calculates a corrected planned winning number by multiplying the planned split winning number by a predetermined coefficient. The control unit 30 subtracts the corrected planned winning number from the divided first planned split winning number. The control unit 30 adds the corrected planned winning number to the divided second planned split winning number. In this way, the control unit 30 obtains the first planned split winning number and the second planned split winning number.

A specific example will be described in which the planned number of split wins is 100, the ratio between the first estimated number of accesses and the second estimated number of accesses is 9:1, and the specified coefficient is 0.1. In this case, the control unit 30 calculates the provisional first planned number of split wins as 90 and the provisional second planned number of split wins as 10 based on the planned number of split wins being 100 and the ratio being 9:1. The control unit 30 calculates the corrected planned number of wins as 10 based on the planned number of split wins being 100 and the specified coefficient being 0.1. The control unit 30 subtracts 10 from 90 to calculate 80 as the first planned number of split wins. The control unit 30 adds 10 to 10 to calculate 20 as the planned number of second split wins.

Similarly, in the first division period, the control unit 30 divides the planned split winning number into the first planned split winning number and the second planned split number based on the ratio between the first provisional access number and the second provisional access number, instead of the ratio between the first estimated access number and the second estimated access number.

In step S39, during the first division period, the control unit 30 obtains a first winning probability based on the first provisional access number and the first planned divided winning number. The control unit 30 obtains a second winning probability based on the second provisional access number and the second planned divided winning number.

In the second division period, the control unit 30 obtains the first winning probability based on the first estimated number of accesses, the first planned divided winning number, and the correction value. The control unit 30 obtains the second winning probability based on the second estimated number of accesses, the second planned divided winning number, and the correction value.

In the third division period, the control unit 30 obtains a first winning probability based on the first estimated number of accesses and the first planned number of divided wins. The control unit 30 obtains a second winning probability based on the second estimated number of accesses and the second planned number of divided wins.

In this way, the control unit 30 obtains the probability of winning for each of the multiple split periods and the user's attribute information based on the expected number of split wins and the estimated number of accesses. In other words, the control unit 30 obtains the probability of winning for each of the user's attribute information based on the expected number of wins and the access history.

In step S54 of the lottery control process shown in FIG. 12, the control unit 30 acquires user attribute information corresponding to the user ID. The control unit 30 executes a lottery with a winning probability corresponding to the user attribute information.

<Actions and Effects of the Second Embodiment>
The operation and effects of the second embodiment will be described.
(2-1) The control unit 30 acquires the winning probability for each user's attribute information based on the expected number of winnings and the access history. Therefore, the lottery can be executed with a dynamic winning probability that takes into account the number of times the lottery is held based on the user's attribute information. This makes it possible to prevent the number of winnings from reaching the expected number of winnings and the number of winnings in the current period from reaching the expected number of divided winnings, resulting in a state where the lottery is not won. In this way, the continuity of the opportunity to win the lottery can be improved. In addition, the value of the user's attribute information can be increased. Therefore, it is possible to appropriately provide users with an opportunity to win the lottery.

[Example of change]
This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that there is no technical contradiction.

In the second embodiment, when the control unit 30 obtains the first and second divided planned winning numbers, it is not necessary to perform a correction based on the corrected planned winning number. In this case, after calculating the first and second winning probabilities, the control unit 30 may correct the second winning probability to be higher than the first winning probability.

In the second embodiment, the control unit 30 may be able to set whether or not to hold a lottery with different winning probabilities based on user attribute information in response to an instruction from an advertisement provider.
The number of accesses may be the number of accesses or the number of users who accessed the site, regardless of the user. When the access to the specified site is a lottery to be held at the specified site, the control unit 30 registers the lottery result in the lottery result database 31B, thereby registering the access history.

- The divided period may be one hour. The divided period may be several hours. In this case, the reference period may be a period in which the day of the week and the time period are the same as those in the current period. The divided period may be one week. The divided period may be one month.

The split period may not include at least any of the first split period, the second split period, and the third split period. The split period may include a fourth split period that is different from the first split period, the second split period, and the third split period. The fourth split period may be a special period in which the probability of winning is higher than the first split period, the second split period, and the third split period. In this case, the control unit 30 may determine a larger number of planned split wins in the fourth split period than in the first split period, the second split period, and the third split period. The fourth split period may be set as any split period within the lottery implementation period.

- The lottery may have multiple winning grades. In other words, winning may include a first prize winning, which has a large reward value granted to the user, and a second prize winning, which has a small reward value granted to the user. The control unit 30 may vary the reward value for each winning grade. As a specific example, the control unit 30 may award the user 100 points for winning first prize, and 1 point for winning second prize. In this case, the control unit 30 obtains the winning probability for each of the multiple winning grades. The control unit 30 obtains a winning probability corresponding to winning first prize that is lower than the winning probability corresponding to winning second prize.

The control unit 30 may obtain the planned split number of wins for each divided period without considering the remaining planned number of wins. The control unit 30 may obtain the planned split number of wins evenly for each divided period without considering the remaining planned number of wins. In this way, when the estimated number of accesses differs for each divided period, the control unit 30 can obtain a different winning probability for each divided period even if the planned split number of wins is the same. The control unit 30 may obtain the planned split number of wins for each divided period in a ratio corresponding to the estimated number of accesses without considering the remaining planned number of wins. The control unit 30 may obtain a larger planned split number of wins in a divided period with a large estimated number of accesses than in a divided period with a small estimated number of accesses without considering the remaining planned number of wins.

- The control unit 30 may obtain the number of divided winnings expected for each divided period before the start of the lottery implementation period or at the start of the lottery implementation period. The control unit 30 may obtain the number of divided winnings expected evenly for each divided period before the start of the lottery implementation period or at the start of the lottery implementation period.

- The control unit 30 may acquire as the reference period a period that does not include the same conditions as the current period if it is a divided period prior to the current period. The control unit 30 may acquire as the reference period a period that includes the same conditions as the current period and a period that does not include the same conditions as the current period if it is a divided period prior to the current period. The control unit 30 may acquire as the reference period a divided period included in a specified period immediately preceding the current period. The control unit 30 may acquire all divided periods prior to the current period among the divided periods included in the lottery implementation period.

The control unit 30 may obtain the number of expected winners based on an event registration request from the advertisement provider. In other words, the control unit 30 may obtain the number of expected winners in response to instructions from the advertisement provider. This allows the advertisement provider to understand that it is possible to appropriately provide users with an opportunity to win the lottery.

- The control unit 30 may notify the user of the number of expected winners during the lottery period. The control unit 30 may notify the user of the number of expected winners during the current period. The control unit 30 may notify the user of the reward value that will be granted to the user as a result of winning the lottery.

- The control unit 30 may, for example, grant a discount coupon as a reward to the user. The discount coupon may, for example, be a discount on at least one of the purchase of a product, the provision of a trip, or the provision of a service, or may be a coupon that can be used at an affiliated store. The control unit 30 may also, for example, grant the product itself, the provision of a trip, or the provision of a service as a reward to the user. The control unit 30 may grant the user a type of reward based on the user's behavioral history.

- The information management device 11 may be composed of multiple devices. As a specific example, the information management device 11 may include a user management server, a reward granting server, an advertisement server, and a lottery control server. The user management server is a server that manages information about users. The reward granting server is a server that grants rewards to users. The advertisement server is a server that provides advertisements to users. The lottery control server is a server that controls lottery events. The combination of the user management server, the reward granting server, the advertisement server, and the lottery control server may be managed by different managers or by the same manager.

- The information management device 11 has some of the functions, but some of the functions of the information management device 11 may be provided in another device. As a specific example, the information management device 11 does not need to manage information about the user. In this case, the information management device 11 may be configured to acquire information about the user from a user management server separate from the information management device 11. The information management device 11 does not need to grant a reward to the user. In this case, the information management device 11 may control a reward granting server separate from the information management device 11 to grant a reward to the user. The information management device 11 does not need to provide advertisements to the user. In this case, the information management device 11 may control an advertisement server separate from the information management device 11 to provide advertisements to the user.

- The expression "at least any" as used herein means one or more of the desired options. As an example, the expression "at least any" as used herein means only one option or both options if the number of options is two. As another example, the expression "at least any" as used herein means only one option or any combination of two or more options if the number of options is three or more.

[Additional Notes]
The technical ideas understood from the above-described embodiment and modified examples will be described below.
(A) The information management device includes a planned win number acquisition unit that acquires the number of planned wins during a lottery period at a specified site, an access history registration unit that registers accesses to the specified site and the date and time of access to the specified site as an access history, a winning probability acquisition unit that acquires the winning probability based on the planned win number acquired by the planned win number acquisition unit and the access history registered by the access history registration unit, and a lottery execution unit that conducts a lottery in accordance with user instructions using the winning probability acquired by the winning probability acquisition unit.

(B) The information management device described in (A) includes an estimation unit that estimates the estimated number of accesses to the specified site based on the access history registered by the access history registration unit, and the winning probability acquisition unit acquires the winning probability based on the expected number of wins acquired by the expected number of wins acquisition unit and the estimated number of accesses to the specified site estimated by the estimation unit.

(C) In the information management device described in (A) or (B), the winning probability acquisition unit acquires the winning probability for each of the multiple divided periods into which the lottery implementation period is divided, based on the divided expected winning numbers obtained by dividing the expected winning number acquired by the expected winning number acquisition unit for each of the multiple divided periods into which the lottery implementation period is divided.

The information management device described in (D) and (C) includes an estimation unit that estimates an estimated number of accesses to the specified site based on the access history registered by the access history registration unit, and the estimation unit estimates the estimated number of accesses to the specified site for each of the multiple divided periods into which the lottery implementation period is divided. The winning probability acquisition unit divides the expected winning number acquired by the expected winning number acquisition unit into each of the multiple divided periods into which the lottery implementation period is divided based on the results estimated by the estimation unit as a split expected winning number, and acquires the winning probability for each of the multiple divided periods into which the lottery implementation period is divided based on the split expected winning number.

In the information management device described in (E) and (D), the estimation unit obtains the number of accesses to the specified site in a reference period that includes the same conditions as the current period based on the results registered by the access history registration unit during a current period that includes the current time among multiple divided periods into which the lottery period is divided, and estimates the estimated number of accesses to the specified site during the current period.

In the information management device described in any one of (F), (B), (D), and (E), the winning probability acquisition unit acquires a higher winning probability when the estimated number of accesses to the specified site estimated by the estimation unit is a first estimated number of accesses than when the estimated number of accesses to the specified site estimated by the estimation unit is a second estimated number of accesses that is greater than the first estimated number of accesses.

(G) The information management device described in any one of (A) to (F) includes a lottery result registration unit that registers the lottery results executed by the lottery execution unit, and the winning probability acquisition unit acquires the winning probability based on the remaining expected winning number obtained by subtracting the winning number registered by the lottery result registration unit from the expected winning number acquired by the expected winning number acquisition unit and the access history registered by the access history registration unit.

(H) The information management device described in any one of (A) to (G) includes a user attribute information acquisition unit that acquires user attribute information, and the access history registration unit registers access to the specified site, the date and time of access to the specified site, and the user who accessed the specified site as an access history, and the winning probability acquisition unit acquires the winning probability for each user attribute information based on the expected number of wins acquired by the expected number of wins acquisition unit and the access history registered by the access history registration unit.

The information management device described in any one of (I) (A) to (H) includes an advertisement provision unit that provides advertisements submitted in response to instructions from an advertisement provider in response to instructions from a user, and the expected number of winners acquisition unit acquires the expected number of winners during the lottery implementation period at the specified site in response to instructions from the advertisement provider.

The information management device according to any one of (J) (A) to (I) includes a reward granting unit that grants a reward to a user when the user wins the lottery executed by the lottery execution unit.
In the information management device described in any one of (K) (A) to (J), the winning probability acquisition unit acquires the winning probability based on the expected number of winnings acquired by the expected number of winnings acquisition unit, the access history registered by the access history registration unit, and a correction value for reducing the winning probability.

(L) The information management system includes a number of expected winners acquisition unit that acquires the number of expected winners during a lottery period at a specified site, an access history registration unit that registers accesses to the specified site and the date and time of access to the specified site as an access history, a winning probability acquisition unit that acquires the winning probability based on the number of expected winners acquired by the number of expected winners acquisition unit and the access history registered by the access history registration unit, and a lottery execution unit that performs a lottery in accordance with a user's instructions using the winning probability acquired by the winning probability acquisition unit.

(M) The information management method includes one or more computers acquiring the number of expected winners during a lottery period at a specified site, registering accesses to the specified site and the date and time of access to the specified site as an access history, acquiring the probability of winning based on the expected number of winners and the access history, and conducting a lottery based on the winning probability in accordance with a user's instructions.

(N) The program causes one or more computers to obtain the number of expected winners during a lottery period at a specified site, register accesses to the specified site and the date and time of access to the specified site as an access history, obtain the probability of winning based on the expected number of winners and the access history, and conduct a lottery based on the winning probability in accordance with a user's instructions.

10... Information management system, 11... Information management device, 18... Terminal device, 18A... User terminal device, 18B... Advertising terminal device, 20... Terminal control unit, 30... Control unit, 30A... Expected number of winners acquisition unit, 30B... Access history registration unit, 30C... User attribute information acquisition unit, 30D... Estimation unit, 30E... Winning probability acquisition unit, 30F... Lottery execution unit, 30G... Lottery result registration unit, 30H... Advertising provision unit, 30I... Reward granting unit, 31... Memory unit, 31A... Access history database, 31B... Lottery result database, 31C... Event management database.

Claims (16)

an expected number of winning tickets acquisition unit that acquires the expected number of winning tickets during a lottery implementation period at a predetermined site;
an access history registration unit that registers accesses to the predetermined site and the dates and times of accesses to the predetermined site as an access history;
a winning probability acquisition unit that acquires a winning probability based on the expected winning number acquired by the expected winning number acquisition unit and the access history registered by the access history registration unit;
a lottery execution unit that performs a lottery in response to a user's instruction using the winning probability acquired by the winning probability acquisition unit;
Equipped with
the winning probability acquisition unit acquires a winning probability for each of a plurality of divided periods into which the lottery implementation period is divided, based on a divided expected winning number obtained by dividing the expected winning number acquired by the expected winning number acquisition unit for each of a plurality of divided periods into which the lottery implementation period is divided;
Information management device. 2. The information management device according to claim 1 ,
an estimation unit that estimates an estimated number of accesses to the predetermined site based on the access history registered by the access history registration unit;
the estimation unit estimates an estimated number of accesses to the predetermined site for each of a plurality of divided periods into which the lottery holding period is divided;
the winning probability acquisition unit divides the expected winning number acquired by the expected winning number acquisition unit for each of a plurality of divided periods into which the lottery implementation period is divided, as a divided expected winning number, based on the result estimated by the estimation unit, and acquires a winning probability for each of the plurality of divided periods into which the lottery implementation period is divided, based on the divided expected winning number;
Information management device. 3. The information management device according to claim 2 ,
the estimation unit, during a current period including a current time among a plurality of divided periods into which the lottery period is divided, acquires the number of accesses to the predetermined site during a reference period including the same conditions as the current period based on the results registered by the access history registration unit, and estimates the estimated number of accesses to the predetermined site during the current period;
Information management device. an expected number of winning tickets acquisition unit that acquires the expected number of winning tickets during a lottery implementation period at a predetermined site;
an access history registration unit that registers accesses to the predetermined site and the dates and times of accesses to the predetermined site as an access history;
an estimation unit that estimates an estimated number of accesses to the predetermined site based on the access history registered by the access history registration unit;
a winning probability acquisition unit that acquires a winning probability based on the expected number of winnings acquired by the expected number of winnings acquisition unit and the estimated number of accesses to the predetermined site estimated by the estimation unit;
a lottery execution unit that performs a lottery in response to a user's instruction using the winning probability acquired by the winning probability acquisition unit;
Equipped with
Information management device. The information management device according to any one of claims 2 to 4 ,
the winning probability acquisition unit acquires a higher winning probability when the estimated number of accesses to the specified site estimated by the estimation unit is a first estimated number of accesses than when the estimated number of accesses to the specified site estimated by the estimation unit is a second estimated number of accesses that is greater than the first estimated number of accesses.
Information management device. 5. The information management device according to claim 1,
a lottery result registration unit that registers the lottery result executed by the lottery execution unit;
the winning probability acquisition unit acquires a winning probability based on the remaining expected winning number obtained by subtracting the winning number registered by the lottery result registration unit from the expected winning number acquired by the expected winning number acquisition unit and the access history registered by the access history registration unit;
Information management device. 5. The information management device according to claim 1,
A user attribute information acquisition unit that acquires attribute information of a user,
the access history registration unit registers access to the predetermined site, a date and time of access to the predetermined site, and a user who accessed the predetermined site as an access history;
The winning probability acquisition unit acquires a winning probability for each user's attribute information based on the expected number of winnings acquired by the expected number of winnings acquisition unit and the access history registered by the access history registration unit.
Information management device. 5. The information management device according to claim 1,
an advertisement providing unit that provides advertisements submitted in response to instructions from advertisement providers in response to instructions from users;
the expected number of winners acquisition unit acquires the expected number of winners during the lottery implementation period at the predetermined site in response to an instruction from an advertisement provider;
Information management device. 5. The information management device according to claim 1,
a reward granting unit that grants a reward to a user when the user wins the lottery executed by the lottery execution unit;
Information management device. 5. The information management device according to claim 1,
The winning probability acquisition unit acquires a winning probability based on the expected winning number acquired by the expected winning number acquisition unit, the access history registered by the access history registration unit, and a correction value for reducing the winning probability.
Information management device. an expected number of winning tickets acquisition unit that acquires the expected number of winning tickets during a lottery implementation period at a predetermined site;
an access history registration unit that registers accesses to the predetermined site and the dates and times of accesses to the predetermined site as an access history;
a winning probability acquisition unit that acquires a winning probability based on the expected winning number acquired by the expected winning number acquisition unit and the access history registered by the access history registration unit;
a lottery execution unit that performs a lottery in response to a user's instruction using the winning probability acquired by the winning probability acquisition unit;
Equipped with
the winning probability acquisition unit acquires a winning probability for each of a plurality of divided periods into which the lottery implementation period is divided, based on a divided expected winning number obtained by dividing the expected winning number acquired by the expected winning number acquisition unit for each of a plurality of divided periods into which the lottery implementation period is divided;
Information management system. an expected number of winning tickets acquisition unit that acquires the expected number of winning tickets during a lottery implementation period at a predetermined site;
an access history registration unit that registers accesses to the predetermined site and the dates and times of accesses to the predetermined site as an access history;
an estimation unit that estimates an estimated number of accesses to the predetermined site based on the access history registered by the access history registration unit;
a winning probability acquisition unit that acquires a winning probability based on the expected number of winnings acquired by the expected number of winnings acquisition unit and the estimated number of accesses to the predetermined site estimated by the estimation unit;
a lottery execution unit that performs a lottery in response to a user's instruction using the winning probability acquired by the winning probability acquisition unit;
Equipped with
Information management system. One or more computers
Obtaining the expected number of winning tickets during the lottery period at a specified site;
registering access to the predetermined site and the date and time of access to the predetermined site as an access history;
Obtaining a probability of winning based on the expected number of winners and the access history;
Conducting a lottery with the winning probability according to a user's instruction;
Run
The acquiring of the winning probability includes acquiring a winning probability for each of a plurality of divided periods into which the lottery implementation period is divided, based on a divided expected winning number obtained by dividing the expected winning number for each of a plurality of divided periods into which the lottery implementation period is divided;
Information management method. One or more computers
Obtaining the expected number of winning tickets during the lottery period at a specified site;
registering access to the predetermined site and the date and time of access to the predetermined site as an access history;
estimating an estimated number of accesses to the predetermined site based on the access history;
obtaining a probability of winning based on the expected number of winners and the estimated number of accesses to the predetermined site ;
Conducting a lottery with the winning probability according to a user's instruction;
Execute
Information management method. On one or more computers,
Obtaining the expected number of winning tickets during the lottery period at a specified site;
registering access to the predetermined site and the date and time of access to the predetermined site as an access history;
Obtaining a probability of winning based on the expected number of winners and the access history;
Conducting a lottery with the winning probability according to a user's instruction;
Run the command,
The acquiring of the winning probability includes acquiring a winning probability for each of a plurality of divided periods into which the lottery implementation period is divided, based on a divided expected winning number obtained by dividing the expected winning number for each of a plurality of divided periods into which the lottery implementation period is divided.
program. On one or more computers,
Obtaining the expected number of winning tickets during the lottery period at a specified site;
registering access to the predetermined site and the date and time of access to the predetermined site as an access history;
estimating an estimated number of accesses to the predetermined site based on the access history;
obtaining a probability of winning based on the expected number of winners and the estimated number of accesses to the predetermined site ;
Conducting a lottery with the winning probability according to a user's instruction;
Execute the
program.