JP4995505B2 - Information management program and knowledge information sharing system - Google Patents

Description

  The present invention relates to an information management program for collecting information from the outside and a knowledge information sharing system.

  2. Description of the Related Art Conventionally, for example, a system that collects external information distributed on a network from an information source and accumulates the collected information is known. According to this system, it is possible to search or share the collected information by a plurality of users, for example.

  In such a system, the user can process the information and create new information by referring to the information stored in the system, for example (see, for example, Patent Document 1). In this system, information newly created by the user can also be searched or shared.

  In addition, for example, a technique is disclosed in which information is referred to at a frequency similar to the update frequency of each information when collecting information distributed on a network (see, for example, Patent Document 2). According to this prior art, a collection module called a crawler or a robot determines whether to update the collected information based on the update date / time information of the collection source information, and re-creates the search index. be able to.

Patent Document 1 also describes a technique for notifying a user who desires evaluation information added to certain information. According to this prior art, motivation for knowledge sharing in the organization is made, and information disclosure and information sharing in the organization can be promoted.
JP 2003-196546 A Japanese Patent Laid-Open No. 10-49553

  In the above-described prior art, when new information is created by referring to external information collected inside the system, it is assumed that the referenced external information is updated by an information source. In this case, it is detected inside the system that the referenced external information has been updated by the information source. Then, external information (external information before update) collected in the system is replaced (updated) with external information (external information after update) updated by the information source.

  In this case, there is a possibility that the meaning of the information created in the system in association with the external information before update which is the reference source is lost. For example, in the case where evaluation information for external information before update is added, the external information before update is lost because the external information before update is replaced with the external information after update. The case where it becomes becomes possible.

  The present invention has been made in consideration of the above circumstances, and its purpose is to associate external information (before update) with the information created by referring to the external information before update. Is to prevent loss of background knowledge of the information, and to provide a program and an information sharing system for effectively using the information.

According to one aspect of the present invention, an information management program executed by a computer of a knowledge information sharing system, the computer collecting first information from an information source existing outside the knowledge information sharing system A step of storing the collected first information in a first storage means, and a second information created by referring to the first information stored in the first storage means Storing in the second storage means, monitoring the information source to detect that the first information has been updated in the information source, and updating the first information in the information source. When it is detected that the second information created by referring to the first information exists in the second storage means, the second information exists. Was judged In case, among the first information stored in said first storing means, and detecting the content of the information that at least the second information is referred to when created as the difference information, the second An information management program that executes the step of presenting the detected difference information as a reference source of the information is provided.

  According to the present invention, the background of the information is managed by managing the information collected from the outside at the time when the information is created in association with the information created by referring to the information collected from the outside. Knowledge can be prevented from being lost and information can be used effectively.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing a hardware configuration of a client-server system including a knowledge information sharing system according to the present embodiment.

  The client-server system of FIG. 1 is mainly composed of a computer (server computer) 10 and a plurality of client terminals. The plurality of client terminals include a client terminal 20. On the client terminal 20, client software that uses the computer 10 operates. The client software is a browser, for example. A plurality of client terminals including the client terminal 20 are connected to the computer 10 via a network 30 such as the Internet. In FIG. 1, client terminals other than the client terminal 20 are omitted.

  The computer 10 is connected to an external storage device 40 such as a hard disk drive. The external storage device 40 stores a program 41 executed by the computer 10. The computer 10 and the external storage device 40 constitute a knowledge information sharing system 50.

  FIG. 2 is a block diagram mainly showing a functional configuration of the knowledge information sharing system 50 shown in FIG. The knowledge information sharing system 50 includes an interface 51, an information registration unit 52, a usage information management unit 53, an information collection unit 54, a difference detection unit 55, and an information search / display unit 56. In the present embodiment, these units 51 to 56 are realized by the computer 10 shown in FIG. 1 executing the program 41 stored in the external storage device 40. This program 41 can be stored in advance in a computer-readable storage medium and distributed. Further, this program 41 may be downloaded to the computer 10 via the network 30.

  The knowledge information sharing system 50 includes an internal resource database (DB) 42, a usage information storage unit 43, an external resource DB 44, and a difference information storage unit 45. In the present embodiment, these are stored in the external storage device 40.

  The interface 51 inputs and outputs data between client terminals including the client terminal 20 and the knowledge information sharing system 50. The interface 51 inputs, for example, information (hereinafter referred to as internal information) created by a user (user) operating a client terminal or an information search request. Further, the interface 51 transmits information to, for example, a browser of the client terminal.

  Here, the internal information includes, for example, new information created by referring to information already stored in the internal resource database 42 or the external resource database 44 by the user. As a specific example, information created by extracting the contents of a plurality of information already stored in the internal resource database 42 or the external resource database 44, or already stored in the internal resource database 42 or the external resource database 44 Examples include information created as evaluations and comments on information.

  The information registration unit 52 receives internal information input through the interface 51. The information registration unit 52 stores (accumulates) the received internal information in the internal resource database (second storage means) 42. In addition, the information registration unit 52 instructs the usage information management unit 53 to acquire usage information.

  The usage information is information indicating a relationship between pieces of information when there is internal information created by referring to, for example, certain information as described above. Hereinafter, description will be made with reference to information referred to when the internal information is created.

  The usage information management unit 53 acquires usage information in response to an instruction from the information registration unit 52. The usage information management unit 53 stores the acquired usage information in the usage information storage unit 43. The usage information management unit 53 refers to the internal resource database 42, the usage information storage unit 43, or the external resource database 44 based on an inquiry from the difference detection unit 55 or the information search / display unit 56.

  The information collection unit 54 collects information (first information) from an information source (system external resource) 60 existing outside the knowledge information sharing system 50 via, for example, the network 30. Here, information collected from the information source 60 by the information collecting unit 54 is referred to as external information.

  The information collection unit 54 collects external information from the information source 60 based on specific collection conditions, for example, the starting point of collection, the number of collections, or the attributes of information to be collected. This collection condition can be set by the user. The information collection unit 54 stores the collected external information in the external resource database (first storage unit) 44.

  In addition, the information collection unit 54 monitors the information source 60 every preset time (period), thereby detecting that the external information stored in the external resource database 44 has been updated in the information source 60. . At this time, the information collection unit 54 detects that the update has been performed based on, for example, information indicating the update date included in the external information. The information collection unit 54 collects updated external information from the information source 60. The information collection unit 54 transmits the updated external information to the difference detection unit 55.

  Hereinafter, when the external information stored in the external resource database 44 is updated in the information source 60, the updated external information collected from the information source 60 is stored in the updated external information, the external resource database 44. The external information is described as external information before update.

  The difference detection unit 55 refers to the external resource database 44 and detects a difference between the updated external information transmitted by the information collection unit 54 and the pre-update external information stored in the external resource database 44. Also, the difference detection unit 55 informs the usage information management unit 53 whether internal information (second information) created by referring to the external information before update stored in the external resource database 44 exists. Inquire. That is, an inquiry is made as to whether or not the external information before update is a reference source. The difference detection unit 55 stores difference information as difference information as at least a portion referred to as a reference source in the external information before update according to the detected difference amount or the result of an inquiry to the usage information management unit 53. Stored in the unit 45. The difference detection unit 55 updates the external information before update stored in the external resource database 44 to the updated external information.

  The information search / display unit 56 responds to the request among the information (internal information, external information) stored in the internal resource database 42 or the external resource database 44 in response to the information search request input by the interface 51. Search for matching information. The information search / display unit 56 presents (displays) information that matches the request to the user via the interface 51, for example. For example, when presenting information that matches the request to the user, the information search / display unit 56 makes an inquiry to the usage information management unit 53 in order to present information related to the information, for example, a referrer as a link. The information search / display unit 56 has a function of displaying the difference information stored in the difference information storage unit 45 to the user via the interface 51.

  FIG. 3 shows an example of the data structure of the external information 440 stored in the external resource database 44.

  The external information 440 includes an attribute 441 and an attribute value 442. The attribute 441 includes items of ID, URL, creator (registered person), update date, title, and text. The ID is a unique numerical value assigned by the knowledge information sharing system 50 in order to ensure the identity in the external resource database 44. For example, when the external information 440 is collected from a website (information source 60), the URL indicates the URL of the website where the external information 440 exists. The creator indicates a user who created the external information 440 in the information source 60 from which the external information 440 was collected and registered the information in the information source 60. The update date indicates the date when the external information 440 is updated in the information source 60. The title indicates the title of the external information 440. The text indicates the text of the external information 440.

  The attribute value 442 is associated with each item included in the attribute 441 and indicates each value of the external information 440.

  In the example of FIG. 3, the ID is “0054122”, the URL is “http://www.aaa.bbb.cc.z.com/ab/product/maramaru.html”, and the creator is “Taichiro Yamada” ", The update date is" 2006/6/15 ", the title is" Product Information Knowledge Management Platform XX ", and the content indicated by the external information 440 is shown in the text.

  FIG. 4 shows an example of the data structure of the internal information 420 stored in the internal resource database 42.

  The internal information 420 is composed of an attribute 421 and an attribute value 422 in the same manner as the external information 440 described above. The attribute 421 includes items of ID, creation date, creator, title, text, and reference ID. The ID is a unique numerical value assigned by the knowledge information sharing system 50 in order to ensure the identity in the internal resource database 42. The creation date indicates the date on which the internal information 420 was created. The creator indicates a user who has created the internal information 420 by operating a client terminal, for example. If the reference source (internal information or external information) exists in the internal information 420, the reference ID indicates the ID of the reference source. The title indicates the title of the internal information 420. The text indicates the text of the internal information 420.

  The attribute value 422 is associated with each item included in the attribute 421 and indicates each value of the internal information 420.

  In the example of FIG. 4, the ID is “100006943”, the creation date is “2006/7/01”, the creator is “Taichiro Yamada”, the title is “Knowledge Management Product Price Survey Report”, The text indicates the contents indicated by the internal information 420, and the reference IDs are “00054122” and “4506607”.

  Next, an example of the data structure of the usage information will be described with reference to FIGS. Here, for example, it is assumed that the internal information 420 shown in FIG. 4 is created with reference to the external information 440 shown in FIG. 3 described above as one of reference sources.

  The usage information includes information related data and reference content data. FIG. 5 shows an example of the data structure of the information relation data 430 included in the usage information. 6 and 7 show an example of the data structure of the reference content data 431 and 432 included in the usage information.

  The information relation data 430 indicates the relation between the internal information stored in the internal resource database 42 and the reference source of the internal information. The reference content data indicates a range in which the reference source indicated in the information-related data is referenced.

  As shown in FIG. 5, the information relation data 430 includes an attribute 430a and an attribute value 430b, like the external information 440 or the internal information 420 described above. The attribute 430a includes, for example, items of FROM_1, FROM_2, TO, relationship type, and creation date.

  FROM_1 and FROM_2 indicate the IDs of the reference content data. TO indicates the ID of internal information stored in the internal resource database 42. Thus, it is indicated that the internal information indicated by TO is created from the content of the reference source indicated by the reference content data indicated by FROM_1 and FROM_2. The relationship type indicates the relationship between the internal information indicated by TO and the reference source indicated by the reference content data indicated by FROM_1 and FROM_2. The creation date indicates the date and time when the information relation data 430 was created. The attribute value 430b is associated with each item included in the attribute 430a and indicates each value of the usage information.

  In the example of FIG. 5, FROM_1 is “I_00034543 (ID of reference content data 431)”, FROM_2 is “I_94556710 (ID of reference content data 432)”, and TO is “100006943 (ID of internal information 420)”. The relationship type is “aggregation from a plurality of data”, and the creation date is “2006/12/23”.

  In addition to the “aggregation from a plurality of data”, for example, “commenting”, “supplemental information”, “revision up (revision)” and the like are included in the relationship type.

  As shown in FIG. 6, the reference content data 431 shown in FROM_1 of the information relation data 430 is composed of an attribute 431a and an attribute value 431b. The attribute 431a includes items of ID, target, data ID, reference range, and reference content. The ID is a unique numerical value for identifying the reference content data in the usage information storage unit 43. The target indicates a location (internal resource database 42 or external resource database 44) where the reference source indicated by the reference content data 431 is stored. The data ID is the ID of the reference source indicated by the reference content data 431 in the internal resource database 42 or the external resource database 44 indicated by the target. The reference range indicates a referenced range of the reference source indicated by the data ID when the internal information is created. The reference content indicates the content of the reference source included in the range indicated in the reference range.

  In the example of FIG. 6, the ID is “I_00034543”, the target is “external resource database”, the data ID is “00054122”, the reference range is “13th line to 16th line”, and the reference content Shows the contents shown in the 13th to 16th lines of the information (here, the external information 440) indicated by the data ID.

  That is, the reference content data 431 is an example in the case where a part of the “text” of the external information 440 stored in the external resource database 44 is referenced and used.

  As shown in FIG. 7, the reference content data 432 shown in FROM_2 of the information related data 430 is composed of an attribute 432a and an attribute value 432b. The attribute 432a includes items of ID, target, data ID, and range. The contents of each item of ID, object, data ID, and reference range are the same as the reference content data 431 described above.

  In the example of FIG. 7, the ID is “I — 94556710”, the target is “internal resource database”, the data ID is “45066607”, and the reference range is “reference as a link”.

  That is, the reference content data 432 is an example in which internal information whose data ID in the internal resource database 42 is “4506607” is referred to as a link.

  Next, referring to FIG. 8 and FIG. 9, when the external information 440 shown in FIG. 3 is updated in the information source 60, it is a diagram for specifically explaining a transition example of the content of the external information 440. . FIG. 8 is an example of the external information 445 in which the external information 440 is updated on the information source 60 on the update date “2006/7/11”. FIG. 9 is an example of the external information 447 in which the external information 445 is updated on the information source 60 on the update date “2006/09/25”.

  For example, characters shown in a range 445 a shown in FIG. 8 indicate a changed part when the external information 440 is updated to the external information 445. The range 445b is a range shown in the reference range of the reference content data 431 in FIG.

  Similarly, for example, characters shown in the ranges 447a and 447b shown in FIG. 9 indicate changed portions when the external information 445 is updated to the external information 447. The range 447c is a range indicated in the reference range of the reference content data 431, similarly to the above-described range 445b.

  The ranges 445a, 445b, 447a, 447b, and 447c shown in FIGS. 8 and 9 are provided to make this embodiment easy to understand. In the actual external information 445 and 447, It is expressed in text in the same format as other text.

  Next, a process of detecting a difference between external information before update and external information after update and storing the external information before update in the difference information storage unit 45 will be described with reference to the flowchart of FIG. Here, the external information is described as external information X.

  First, the information collection unit 54 compares information indicating the update date between the external information X stored in the external resource database 44 and the external information X of the information source 60. When the update date of the external information X of the information source 60 is newer, the information collection unit 54 detects that the external information X has been updated. In this case, the information collection unit 54 collects the external information X of the information source 60. Hereinafter, when it is detected that the external information X has been updated, the external information X stored in the external resource database 44 is updated before the external information X1 before updating, and the collected external information X of the information source 60 is updated. Will be described as external information X2.

  Next, the difference detection unit 55 inquires of the usage information management unit 53 whether or not internal information created by using or referring to the external information X1 before update exists in the internal resource database 42. The usage information management unit 53 refers to the usage information storage unit 43 in response to an inquiry from the difference detection unit 55. Based on the usage information stored in the usage information storage unit 43, the usage information management unit 53 determines whether there is internal information created by using or referring to the external information X1 before update as a reference source. Determine (step S1). The usage information management unit 53 transmits the result to the difference detection unit 55.

  When there is internal information created by referring to the external information X1 before update (YES in step S1), the difference detection unit 55 refers to the external information X1 before update and the content of the external information X2 after update. (Step S2). As a result of the reference, the difference detection unit 55 determines whether or not the content of the portion indicated in the reference range included in the usage information has been changed (step S3).

  Here, the processing of Step 3 will be specifically described by taking the external information 440, the external information 445, and the external information 447 shown in FIGS. 3, 8, and 9 as an example.

  First, the case where the external information 440 is updated to the external information 445 is assumed. In this case, the characters in the range 445a are changed, but the range 445a is not included in the range 445b. That is, the characters in the range 445b that is the portion indicated by the reference range included in the usage information are not changed. In this case, in the process of step S2 in FIG. 10, it is determined that the content of the portion indicated in the reference range included in the usage information has not been changed by the update.

  Next, it is assumed that the external information 445 is updated to the external information 447. In this case, the characters in the ranges 447a and 447b are changed, and the ranges 447a and 447b are included in the range 447c. That is, the characters in the range 447c, which is the portion indicated by the reference range included in the usage information, have been changed. In this case, in the process of step S2 of FIG. 10, it is determined that the content of the portion indicated in the reference range included in the usage information has been changed by updating.

  Returning to FIG. 10 again, if the difference detection unit 55 determines that the content of the portion indicated in the reference range included in the usage information has been changed by updating (YES in step S3), the change has been made. The text amount is evaluated by, for example, the evaluation formula F (x) (step S4).

  As an example of this evaluation formula, evaluation formula F (x) = Σ (number of updated characters included in the reference range of external information X1 before update) / Σ (included in the reference range of external information X1 before update) The total number of characters in the part) * (number of updated characters of external information X1 before update) / (total number of characters of external information X1 before update) can be considered. Note that the operator “Σ” in the evaluation formula F (x) means that when there are a plurality of pieces of information created by referring to the external information X1 before the update, the plurality of pieces of information are added. .

  The difference detection unit 55 determines whether or not the value of the above-described evaluation formula F (x) is larger than a predefined threshold value (step S5).

  When the value of the evaluation formula F (x) is larger than the threshold (YES in step S5), the difference detection unit 55 uses the portion within the reference range of the external information X1 before the update as the difference information, and external information indicating the external information X The information is stored in the difference information storage unit 45 in association with the ID (step S6).

  On the other hand, when the value of the evaluation formula F (x) is smaller than the threshold value (NO in step S5), the difference detection unit 55 updates the external information X1 before update stored in the external resource database 44 to the external information X2 after update. (Step S7).

  In the evaluation formula F (x), when the number of updated characters is large within the reference range of the external information X1 before update, the value of the evaluation formula F (x) is large. Similarly, the value of the evaluation formula F (x) increases even when the number of updated characters in the entire external information X1 before update is large. That is, in this process, in the external information X1 before update, when there are many changes (due to update) within the reference range or when there are many changes (due to update) as a whole, the part within the reference range is stored as difference information Is likely to be.

  The evaluation formula F (x) described above calculates the value of the evaluation formula F (x) based only on the text change amount. For example, “price” or “date” in the sentence within the reference range. When the content regarding is changed, an evaluation formula that multiplies a predetermined weight may be used.

  On the other hand, if NO in steps S1 and S3, the process of step S7 is executed.

  FIG. 11 shows an example of the data structure of the difference information 450 stored in the difference information storage unit 45.

  The difference information 450 includes an attribute 451 and an attribute value 452. The attribute 451 includes items of difference information ID, external information ID, external information update date, range, and content. The difference information ID is a unique numerical value for specifying the difference information in the difference information storage unit 45. The external information ID is an ID indicating external information (external information after update) corresponding to the difference information 450. The external information update date indicates the date when the external information indicated by the external information ID is updated to the content at the time of reference. The range indicates which part of the external information indicated by the external information ID is the difference information. The content indicates the content (text) indicated by the difference information 450.

  In the example of FIG. 11, the difference information ID is “000001”, the external information ID is “00054122”, the external information update date is “2006/06/15”, and the range is “line 13-16”. In the contents, contents shown in the range of the external information indicated by the external information ID updated on the external information update date are shown.

  Next, a processing procedure for displaying difference information to the user will be described with reference to the flowchart of FIG.

  First, it is assumed that the user designates internal information that matches an information search request, for example, as information (resource) to be displayed to the user among information stored in the internal resource database 42 or the external resource database 44. (Step S11).

  The information search / display unit 56 causes the terminal of the client terminal to display the internal information designated by the user via the interface 51 on the terminal (step S12).

  Here, it is assumed that external information (reference source external information) exists as a reference source of the displayed internal information. When the user gives an instruction to display the external information of the reference source (YES in step S13), the difference information detection unit 55 determines whether there is difference information corresponding to the external information of the reference source. (Step S14).

  When there is difference information corresponding to the external information of the reference source (YES in step S14), the difference information detection unit 55 selects the difference information (step S15). If there are multiple pieces of difference information corresponding to the external information of the reference source, for example, the creation date of the internal information created by referring to the external information of the reference source, the external information update date of the difference information, or the reference range Based on this, the difference information indicating the content of the external information of the reference source at the time of being taken in (referenced) is selected.

  The information search / display unit 56 causes the reference range of the reference source external information to be replaced with the content of the difference information selected by the difference information detection unit 55 and displayed by the browser of the client terminal, for example (step S16).

  When an instruction to display the external information of the latest (current) reference source is given in place of the external information of the reference source displayed in place of the content of the difference information (YES in step S17), the external resource database 44 The external information of the reference source stored in is displayed as it is.

  On the other hand, if the user does not give an instruction to display the external information of the reference source in step S13, the processes in steps S14 to S18 described above are not executed.

  In step S17, if the instruction to display the latest external information of the reference source is not given in place of the external information of the reference source displayed in place of the content of the difference information, the process of step S18 described above is not executed.

  In step S14, if there is no difference information corresponding to the external information instructed to be displayed by the user, the process of step S18 is executed.

  In step S12, when there is difference information corresponding to the external information of the reference source, for example, a mark indicating that may be displayed when displaying the internal information to the user. According to this configuration, the user can determine whether the displayed internal information is information created by referring to the latest contents by confirming the above-described mark.

  Next, the operation of the knowledge information sharing system 50 will be specifically described with reference to FIGS. 3 to 9 and 11.

  It is assumed that the external information 440 illustrated in FIG. 3 is collected by the information collection unit 54 and the external information 445 illustrated in FIG. In this case, since there is no change due to the update in the range 445b of the external information 445 shown in the reference range of the reference content data shown in FIG. 6, the portion in the range 445b of the external information 445 is a difference information storage unit as difference information 45 is not stored.

  On the other hand, it is assumed that the external information 440 shown in FIG. 3 is collected by the information collecting unit 54 and the external information 447 shown in FIG. In this case, in the range 447c of the external information 447 shown in the reference range of the reference content data shown in FIG. 6, there are changes due to updating in the ranges 447a and 447b. Here, assuming that the value of the evaluation formula F (x) is larger than the threshold value, the reference range portion of the external information 440 is stored in the difference information storage unit 45 as difference information. At this time, the external information 440 stored in the external resource database 44 is updated to the external information 447.

  Hereinafter, it is assumed that the internal information shown in FIG. In this case, when the display of the external information indicated by the reference ID (00054122) shown in FIG. 4 is instructed by the user, the external information 447 stored in the external resource database 44 is not displayed as it is. In this case, the range 447c portion of the external information 447 is replaced with the reference range portion of the external information 440 indicated by the difference information stored in the difference information storage unit 45 and displayed.

  As described above, in the present embodiment, when external information is updated in the information source 60, the external information before update can be stored in the difference information storage unit 45 as difference information. Thereby, even when the external information is updated, the external information (before update) at the time of reference can be managed in association with the information created by referring to the external information before update. This makes it possible to prevent the loss of background information of information created by referring to external information before update. As a result, it is possible to prevent the accuracy (accuracy) of information shared by the knowledge information sharing system 50 from being lost.

  Further, in the present embodiment, by storing only the referenced range of the external information before update as difference information in the difference information storage unit 45, the amount of information stored in the difference information storage unit 45 is minimized. It is possible.

  In addition, since it is possible to switch the display between external information before update and external information after update, the user should check how the information at the time of reference and the latest information have changed. Is possible.

  In the present embodiment, the range in which external information before update is referred to is detected as difference information. However, the portion of external information before update in which external information before update is referenced. The configuration may be such that the user can select a range including. In this case, the range selected by the user is detected as difference information. For this reason, it is possible to detect the difference information other than the part of the external information before being updated.

  Moreover, the structure which detects the summary of the text of the external information before an update as difference information may be sufficient. In this case, it is possible not only to prevent the background information from being lost, but also to detect the entire external information before the update as difference information by creating a summary centered on the referenced range of the external information before the update. it can.

  Further, when information that cannot be converted into text, for example, image information is included in a range in which external information before update is referred to, the image information may be stored as an image.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment.

The block diagram which shows the hardware constitutions of the client-server system containing the knowledge information sharing system which concerns on embodiment of this invention. The block diagram which mainly shows the function structure of the knowledge information sharing system 50 of FIG. The figure which shows an example of the data structure of the external information 440 stored in the external resource database 44. The figure which shows an example of the data structure of the internal information 420 stored in the internal resource database. The figure which shows an example of the data structure of the information related data 430 contained in utilization information. The figure which shows an example of the data structure of the reference content data 431 contained in utilization information. The figure which shows an example of the data structure of the reference content data 432 contained in utilization information. The figure which shows an example of the external information 445 in which the external information 440 was updated in the information source 60. The figure which shows an example of the external information 447 in which the external information 445 was updated in the information source 60. The flowchart which shows the process sequence which detects the difference of the external information before update, and the external information after update, and stores the external information before update in the difference information storage part 45. FIG. The figure which shows an example of the data structure of the difference information 450 stored in the difference information storage part 45. The flowchart which shows the process sequence which displays difference information with respect to a user.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Computer, 20 ... Client terminal, 30 ... Network, 40 ... External storage device, 42 ... Internal resource database (2nd storage means), 43 ... Usage information preservation | save part, 44 ... External resource database (1st storage means) ), 45 ... Difference information storage unit, 50 ... Information sharing system, 51 ... Interface, 52 ... Information registration unit, 53 ... Usage information management unit, 54 ... Information collection unit, 55 ... Difference detection unit, 56 ... Information search / display 60, an information source.

Claims (5)

To computer of knowledge information sharing system ,
And storing in the first storage means to collect external information from sources external to the said knowledge information sharing system,
Storing internal information created by referring to the external information stored in the first storage means in the second storage means, and managing a reference range of the external information at the time of reference ;
By monitoring the information source, if the external information by the information source is updated is detected, or internal information created with reference to the external information is present in said second storage means Determining
When it is determined that the internal information exists, the reference range in the external information stored in the first storage unit and the reference range in the external information updated by the information source are referred to, and the reference Detecting whether the content of the range information has been changed by the update ;
Only when it is detected that the content of the information in the reference range has been changed, storing the content of the information in the reference range before the update as difference information in the difference information storage unit;
Presenting the difference information stored in the difference information storage means as difference information indicating the content of the external information of the reference source at the time of reference when displaying the internal information designated by the user on the terminal ; information management program for the execution. In the computer,
A step of causing the user to select a range including the reference range from the external information stored in the first storage unit;
The information management program according to claim 1, wherein in the storing step, content included in the selected range is detected as the difference information. In the computer,
The information management according to claim 1, further comprising a step of switching the difference information presented as a reference source of the internal information to external information updated by the information source in accordance with an instruction from a user. program. First storage means for collecting and storing external information from external information sources having various types of information;
Second storage means for storing internal information created by referring to the external information stored in the first storage means, and third storage for managing a reference range of the external information at the time of the reference Means,
Based on the information indicating the update date of the external information and the external information stored in the first storage means of the information source, if the external information is updated is detected by the information source,
Determination means for determining whether internal information created by referring to the external information exists in the second storage means;
When the determination unit determines that the internal information exists, the reference range in the external information stored in the first storage unit and the reference range in the external information updated by the information source are referred to. Difference detection means for detecting whether the content of the information in the reference range has been changed by the update ;
Only when it is detected that the content of the information in the reference range has been changed, difference information storage means for storing the content of the information in the reference range before update as difference information;
Presenting means for presenting the difference information stored in the difference information storage means as difference information indicating the content of the external information of the reference source at the time of reference when displaying the internal information designated by the user on the terminal And a knowledge information sharing system characterized by comprising:   Computer of knowledge information sharing system
  Collecting external information from an information source existing outside the knowledge information sharing system and storing it in a first storage means;
  Storing internal information created by referring to the external information stored in the first storage means in the second storage means, and managing a reference range of the external information at the time of reference;
  Whether the internal information created by referring to the external information exists in the second storage means when it is detected by the information source that the external information has been updated by monitoring the information source Determining
  When it is determined that the internal information exists, the reference range in the external information stored in the first storage unit and the reference range in the external information updated by the information source are referred to, and the reference Detecting whether the content of the range information has been changed by the update;
Only when it is detected that the content of the information in the reference range has been changed, storing the content of the information in the reference range before the update as difference information in the difference information storage unit;
  Presenting the difference information stored in the difference information storage means as difference information indicating the content of the external information of the reference source at the time of reference when displaying the internal information designated by the user on the terminal;
  Information management method to execute.

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