JP7108458B2 - Project status management device, computer program and project status management method - Google Patents

Description

The present invention relates to technology for managing the status of projects such as system construction, and is particularly effective when applied to a project status management device, a computer program, and a project status management method that enable early detection of signs of latent risks in a project. It's about technology.

In a project such as system construction, it is one of the important issues to ensure the quality of deliverables and to promote the project without delaying the deadline. If there is a delay or rework in project progress, there is a risk that the project will become unprofitable due to unexpected additional costs, and a risk that the brand image will be damaged due to the loss of trust from customers. It can lead directly to damage. In order to avoid such a situation, project managers and project management departments are required to detect events that can become problems in projects, that is, signs of risk, at an early stage, grasp the situation, and take appropriate measures. .

Various methods have been proposed to solve such problems. a first storage means for storing; a second input means for inputting development status information about the project; a second storage means for storing the development status information; and information for risk judgment from the development status information. and risk judgment information calculation means for calculating the risk judgment information of the project from the extracted information, the plan information, and a predetermined calculation formula; project risk evaluation means for comparing and judging whether there is a risk; risk-specific countermeasure information storage means for storing the relationship between the risk and the countermeasure as an evaluation value indicating the effect of the predetermined countermeasure corresponding to the risk; and the presence of the risk. countermeasure presentation means for presenting countermeasure information evaluated to be effective among risk-based countermeasure information stored in advance according to the risk, when it is determined that a symptom of a problem occurs early. A detection and countermeasure system" is disclosed.

Japanese Patent Application Laid-Open No. 2007-183729

However, the invention described in Patent Document 1 performs risk determination based on ex-post information such as the degree of progress of the development plan. It is difficult to perform early detection for the purpose of preventing risk occurrence at the stage. In addition, data that indicates the degree of progress (for example, which development phase the target project is in, how far the work assigned to each phase has been completed, how much budget was used, how many personnel were invested, (Consists of management items such as content and countermeasures) are assumed to be input by the project team leader, etc., so there is a high possibility that the work of inputting these inputs itself will be troublesome.
Therefore, in the present invention, it is conceived to derive the progress status and risks of the project based on the folder structure and file update status of the repository that stores intermediate/final products. However, conventional repositories generally provide a folder hierarchy diagram as shown in FIG. 7 and a management screen that displays only a list of files stored in individual folders.
A problem with the conventional display format is that it becomes difficult to see the whole as the number of deliverables increases and the tree structure becomes deeper. If the person in charge of designing each function only looks at one folder, most of the work can be done. However, in order for the leader of the subsystem and the project manager to grasp the overall situation, the operation of opening and closing several folders is repeated.

The present invention has been made in view of such problems. By visualizing the hierarchical structure of a repository that stores intermediate deliverables in a project such as system construction in a list, signs of latent risks in the project can be detected. It is an object of the present invention to provide a project status management device, a project status management program, and a project status management method that enable early discovery.

In order to achieve such an object, the invention according to claim 1 provides a project status management apparatus comprising one or more computers, wherein a node serving as a display reference is selected from a plurality of nodes in a hierarchical relationship of a tree structure. a reference node extracting means for extracting as a reference node; a subordinate node extracting means for extracting a node subordinate to the reference node as a subordinate node; a metadata obtaining means for obtaining metadata of the plurality of nodes; node display control means for displaying, as a base point, the correlation between the reference node and the subordinate node in a predetermined form based on the metadata, wherein the correlation between the reference node and the subordinate node relates to the project. Corresponding to the hierarchical relationship of the tree structure specified by the path information related to the folder or file for recording information, the predetermined form is a concentric circle centered on the reference node, and the subordinate nodes in the same hierarchy Concentric circles are arranged equidistantly from the reference node, and the node display control means changes the display form of each of the subordinate nodes according to the number of updates or the update date and time of the folder or file corresponding to each of the subordinate nodes. It is characterized by making it different .

According to a second aspect of the invention, in the first aspect of the invention, when the user performs a predetermined operation of designating any of the displayed subordinate nodes as a new reference node, the node display control means Using the new reference node as a base point, the correlation between the new reference node and the new subordinate node subordinate to the new reference node is displayed in the predetermined form based on the metadata .

The invention according to claim 3 is the invention according to claim 1 or 2, further comprising search condition reception means, wherein the search condition reception means receives search conditions from a terminal, and the reference node extraction means performs the search. The reference node is extracted based on conditions .

The invention according to claim 4 is the invention according to claim 3 , further comprising display form change reception means, wherein the display form change reception means receives display form information of a node from the terminal, and displays the display form. The information includes at least one of color, shape, size, and number of display hierarchies, and the node display control means redisplays the form of the displayed node based on the display form information of the node. Characterized by

The invention according to claim 5 is a project status management method in which each step is executed in a project status management apparatus comprising one or more computers, wherein a node serving as a display reference is selected from a plurality of hierarchically related nodes. a reference node extraction step of extracting as a reference node; a subordinate node extraction step of extracting a node subordinate to the reference node as a subordinate node; a metadata acquisition step of obtaining metadata of the plurality of nodes; a node display step of displaying the correlation between the reference node and the subordinate node in a predetermined form based on the metadata as a base point, wherein the correlation between the reference node and the subordinate node records information about a project. Corresponding to the hierarchical relationship of the tree structure specified by the path information related to the folder or file, the predetermined form is a concentric circle centered on the reference node, and the subordinate nodes in the same hierarchy are arranged from the reference node. concentric circles arranged at equal distances, and the node display control step varies the display form of each of the subordinate nodes according to the number of updates or update date and time of the folder or file corresponding to each of the subordinate nodes. characterized by comprising

The invention according to claim 6 is a computer program for causing one or more computers to function as respective means of a project situation management device, wherein the project situation management device uses a plurality of nodes in a hierarchical relationship as display criteria. a reference node extracting means for extracting a node as a reference node; a subordinate node extracting means for extracting a node subordinate to the reference node as a subordinate node; and a metadata acquisition means for acquiring metadata of the plurality of nodes; and node display control means for displaying the correlation between the reference node and the subordinate node in a predetermined form based on the metadata, with the reference node as a base point, the correlation between the reference node and the subordinate node. corresponds to the hierarchical relationship of the tree structure specified by the path information of the folder or file that records the information about the project, the predetermined form is a concentric circle centered on the reference node, and the The subordinate nodes are arranged in concentric circles at equal distances from the reference node, and the node display control means controls the display form of each of the subordinate nodes according to the number of updates or updates of the folder or file corresponding to each of the subordinate nodes. It is characterized in that it is made different according to the date and time .

According to the project status management device, project status management program, and project status management method according to the present invention, registered contents of a database having a hierarchical structure, particularly a repository that stores intermediate deliverables in a project such as system construction, can be displayed at a glance. Since the information is visualized and provided to users such as project managers and project management departments, signs of latent risks in the project can be detected early.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an overview of a configuration example of a system provided with a project situation management device that is an embodiment of the present invention; FIG. 4 is a folder correlation diagram, which is an example of a display screen generated and displayed by the project status management device according to the embodiment of the present invention; In the project status management screen shown in FIG. 2, a subordinate node (such as a folder) arbitrarily specified by the user is used as a new reference node, and a new correlation with the node (such as a folder) subordinate to the new reference node is generated.・This is an example of the displayed screen. FIG. 10 is an example showing a function of blocking some subordinate nodes by a predetermined operation in the correlation diagram shown on the project status management screen; FIG. FIG. 10 is a diagram showing an example of node display conditions (objects); FIG. 10 is a diagram showing an example of node display conditions (color patterns); FIG. 10 is a diagram showing an example of a conventional folder structure display method; 3 is a diagram showing an example of a screen when a user operates a risk display icon on the project status management screen shown in FIG. 2; FIG. 3 is a diagram showing an example of a screen when a user operates a process display icon on the project status management screen shown in FIG. 2; FIG. On the project status management screen shown in FIG. 2, the user executes the function included in the setting icon to change the correlation of nodes in the target range of the repository (that is, the folder structure in the repository) in chronological order (for example, within a predetermined period of time). FIG. 10 is a diagram showing an example of a screen displayed on a monthly basis.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In principle, the same parts are denoted by the same reference numerals throughout the drawings for describing the embodiments, and repeated descriptions thereof will be omitted. Also, in each drawing, some members that are not important for explanation are omitted. It goes without saying that the present invention can be embodied in many different forms and is not limited to the descriptions disclosed below, and can be modified in various ways without departing from the scope of the invention.

The project status management apparatus of the present invention described below is realized by processes, means, and functions executed by a computer according to instructions of a program (software). The program can send instructions to each component of the computer to execute predetermined processes, functions, etc. according to the present invention described below. That is, each process, means, and function in the present invention are realized by concrete means in which a program and a computer work together. All or part of the program is provided by, for example, a magnetic disk, an optical disk, a semiconductor memory, or any other computer-readable recording medium, and the program read from the recording medium is installed and executed in a computer. Also, the program can be directly loaded into a computer and executed through a communication line without using a recording medium. Further, the project status management device according to the present invention can be configured with a single information processing device (for example, one personal computer, etc.), or can be configured with a plurality of information processing devices (for example, a plurality of server computers, etc.). Can also be configured. It should be noted that the following embodiments are described in detail in order to explain the present invention in an easy-to-understand manner. , it is possible to add, delete, or replace other configurations.

FIG. 1 shows a system configuration including a project situation management device according to one embodiment of the present invention.
The system equipped with the project status management device according to one embodiment of the present invention shown in the figure includes a project status management device 10 and one or more user terminals 1 equipped with a project status management application (not shown). (1A, 1B, 1C . . . 1N, hereinafter simply referred to as user terminal 1). The project status management device 10 and one or more user terminals 1 (project status management application) are connected to each other for data communication via a predetermined network 20 such as the Internet.

The user terminal 1 is a terminal operated by a user involved in a system construction project (including developers, project leaders, members of the project management department, etc.). , and includes an output device (for example, a display, etc.) and an input device (for example, a keyboard, a mouse, etc.). The user terminal 1 is connected to the project status management device 10 so as to be capable of data communication, and a project status management application (not shown) is installed in the user terminal 1 . By operating the user terminal 1, each user can execute the functions provided by the project situation management device according to the present invention via a project situation management application (not shown). However, the present invention is not limited to such an embodiment, and for example, the user terminal 1 itself may constitute the project status management device 10 instead of functioning as a mere viewer (browser).

The project status management device 10 includes a repository 11, a reference node extraction unit 12, a subordinate node extraction unit 13, a metadata acquisition unit 14, a node display control unit 15, a search condition reception unit 16, and a display form change reception. 17, and can be configured by an information processing apparatus such as a server system including one or more server computers or one or more virtual servers configured on a cloud computing service.

The repository 11 is a storage area that holds information (project information) related to system construction projects, and acquires and accumulates predetermined information necessary for operating the project status management device 10 of the present invention. In this embodiment, the repository 11 is integrally provided with the project status management device 10, but may be provided as an external storage device separately from the project status management device 10. FIG.

The project information is a data set containing multiple types of data, includes at least hierarchical deliverable data, and is stored and updated as the project progresses.
Deliverable data is data obtained as a deliverable in the process of executing a task. Among the deliverable data, some are created during the task (for example, an issue management table), and some are created at the completion of the task. For example, in the task "outline design", it is conceivable that data in outlining design documents is created as deliverable data. In the task "consolidation test", it is conceivable that test cases, implementation plans, and implementation results of the consolidation test are created.
In one embodiment of the present invention, it is assumed that folders and files containing deliverable data are managed in a tree structure. A figure (for example, a branch line of a tree diagram), which is information and indicates the correlation between nodes, is generated based on the parent-child relationship of the tree structure specified by the path information.
In addition, the display target range in the present embodiment may be limited to only projects currently being executed, or may include projects that have already been completed (delivered to customers). Furthermore, only folders created by specific tasks of the project being executed may be set as the display target range.

In addition, project information includes process data (for example, records indicating the execution order of multiple tasks and the scheduled execution date of each task, etc.), which is data that indicates the process of the project, and each of the multiple tasks included in the process. Task data (for example, a record indicating the progress of each task, etc.), which is data relating to specific contents, may be included.

The repository 11 also holds metadata, which is additional data related to project information. Specifically, it holds metadata about all folders and files read or saved in the repository 11 . Metadata includes at least information about the creation and updating of folders and files (e.g., folder names, file names, node names such as character strings indicating folder and file contents, creation time, update time, creator attribute, updater attribute, etc.). ), and information on the number of updates counted by a computing means (not shown). The computing means may be included in the functions of the reference node extractor 12 and the subordinate node extractor 13, which will be described later.

The reference node extraction unit 12 acquires node information based on folder/file path information of the project information held by the repository 11, and performs processing for extracting a reference node that is the center of display.

Based on the reference node extracted by the reference node extraction unit 12, the subordinate node extraction unit 13 extracts from the repository 11 a subordinate node having a subordination relationship with the reference node. If subordinate nodes are composed of multiple hierarchies, all hierarchies may be extracted, or only subordinate nodes up to a preset number of hierarchies (for example, subordinate nodes up to the fifth hierarchy) are extracted. You can control it like this. Also, the number of nodes to be displayed may be specified by the user. You may control to extract only.

The metadata acquisition unit 14 acquires metadata of the reference node extracted by the reference node extraction unit and the subordinate node extracted by the subordinate node extraction unit. The metadata includes at least information on the node name of each target node, the date and time of last update, and the number of updates.

The node display control unit 15 controls the display form of the reference node and the subordinate nodes based on the metadata and preset conditions, and schematically shows the correlation of the plurality of nodes according to the operation from the user terminal 1. The displayed project status management screen is generated and displayed on a predetermined display unit such as the display of the user terminal 1 . In the present embodiment, the correlation of a plurality of nodes is displayed in a concentric display form centering on the reference node. Specifically, as shown in FIG. It is displayed in a concentric shape with all subordinate nodes radially oriented toward . This means that the nodes in the upper hierarchy are arranged on a concentric circle near the center, and the nodes in the lower hierarchy are arranged on the periphery.
The display mode controlled by the node display control unit 15 includes, at least, colors corresponding to the metadata of each node, object size (or ratio according to the display screen) and shape, dynamic display such as blinking and expansion, Any one or more of a position and the like are included. Also, the node display control unit 15 may control the display form of graphics (for example, branch lines) connecting nodes, such as color and thickness. Also, control may be performed so that the node name is displayed near the node within a range that does not impair readability.
Although not shown, the project status management device 10 stores conditions for generation and display arbitrarily set by the user, such as drawing data and object data necessary for generating and displaying diagrams showing correlations between nodes. Equipped with a design section, for example, as shown in Fig. 5, the number of update times of each node is divided according to an arbitrarily set condition, and an object with a different shape and size that is arbitrarily specified for each division is displayed. Alternatively, as shown in FIG. 6, the display conditions are set so that the last update date of each node is divided according to an arbitrarily set condition, and each division is displayed in an arbitrarily designated different color. may be stored. In the example using the color code (16-bit notation) shown in FIG. 6, the definition of a more reddish color is set for a section with a newer last update date, and the definition of a more bluish color is set for a section with an older last update date. However, by designing the color scheme of the sections in this way, it is possible to intuitively understand the new and old of the last update date.
In addition, regarding display conditions such as drawing data and object data, contents set by the user terminal 1 may be freely reflected in the display condition table.

Further, when the user performs a predetermined operation of designating any of the subordinate nodes as a new Using the new reference node as a new base point, display the correlation between the new reference node and its subordinate nodes. For example, as shown in Fig. 3, when the node "executing PRJ" in the first layer is displayed as a reference node with concentric circles (Fig. 3-left), the user performs a predetermined operation to If the node "20.External design" located in the second layer is specified as a new reference node, a correlation diagram with a narrowed target range will be displayed with the node "20.External design" as the new center (Fig. 3-right).
Further, the node display control unit 15 performs a predetermined operation of instructing to close one of the subordinate nodes by the user, for example, as shown in FIG. , a correlation diagram is displayed in which the nodes under the subordinate node are blocked (Fig. 4-right). Similarly, by performing a predetermined operation for instructing expansion, a correlation diagram in which blocked nodes are expanded is displayed.

The search condition reception unit 16 accepts search conditions input by the user from the user terminal 1, for example, conditions specifying the range of targets for which the correlation is to be displayed (reference node name, node-specific ID number, final update date determination criteria, and date, project type, hierarchy to be displayed, node to be blocked, etc.). Although the node display control unit 15 may always extract the folder of the first layer as the reference node based on the initial setting conditions, the reference node is extracted based on the conditions received by the search condition reception unit 16. Also good.

The display form change reception unit 17 selects contents (e.g., color, shape, object size, etc.) related to the change of the display form arbitrarily set by the user from the user terminal 1 for the screen showing the correlation of the already displayed nodes. , the number of display hierarchies, etc.), and the node display control unit 15 may redraw the display of the screen based on the change content received by the display mode change reception unit.

Network 20 may include wired or wireless networks or combinations thereof, and may include the Internet, intranets, LANs, WANs, WiFi, Bluetooth®, wireless telephone networks, and the like.

Next, specific operations and display forms of the system provided with the project situation management apparatus according to the present embodiment configured as described above will be described with reference to FIGS. 8 to 10. FIG.
8 to 10 are diagrams showing examples of project status management screens generated and displayed by the system provided with the project status management device according to the present embodiment.
The operations described below are executed by the project status management device from the user terminal 1 via the project status management application.

First, the user operates the user terminal 1 to access the project status management application. In this case, the user can log in to the project status management application by entering, for example, the user ID and password assigned to the user. Then, through the logged-in project situation management application, the functions executed by the project situation management device 10 according to the present invention can be used as follows. It should be noted that, based on the authority information specified by the user ID, it is also possible to limit the functions and ranges that can be used.

In the user terminal 1 logged in to the project status management application, the project status provided by the project status management device according to the present invention is displayed on the screen shown in FIG. You can display the management screen. Alternatively, the display may be performed based on a range set in advance or conditions defined in a setting file or the like imported from the outside.

FIG. 8 shows an example of a display screen generated and displayed by the project status management device. The hierarchical folder structure shown in FIG. , and subordinate nodes (for example, folders in the second layer 02 and below) are displayed radially. FIG. 8 is a visualization of the folder structure of a predetermined range in the repository that stores project information (for example, deliverable folders and files) so that the user can easily view the potential risks of the project from this display screen. Can help read the signs.
For example, in the portion indicated by 71 in FIG. 8, a subordinate node (a subordinate node located in the lowest layer) has a shape like a thorn sharply protruding from a concentric circle. This indicates that it is in a deeper hierarchy than other subordinate nodes under the same folder, that is, it can be read that the hierarchy of the deliverable folder as a whole is uneven. Normally, the depth of the hierarchy of folders that store project deliverables is generally uniform, so there is a possibility that the project is in a state of lack of control. Insufficient control over deliverables will lead to omissions in communicating requirements to the next process, which in turn leads to the risk of omissions in implementation.
Also, the portion indicated by 72 in FIG. 8 is displayed in a different display form (in FIG. 8, it is represented by a solid line, a broken line, etc., but each category of the last update may be represented by a different color). There is a place where nodes are mixed. In other words, this indicates that only one node with a new update date and time has occurred in a folder that stores nodes with an old update date and time. This means that there is still updated information in the folder of the already completed process. This suggests that a so-called rework has occurred in the project.
The user may visually identify signs of risk that can be read from the project status management screen, as exemplified above. By operating this "Risk Display" button, the system may automatically determine and display signs of risks that can be read from the project status management screen, as shown in 73 and 74 in FIG. Specifically, for example, it automatically calculates the average value of the node hierarchy and the last update date, etc., and extracts the nodes of the hierarchy whose difference from the average value is a predetermined value or more. An embodiment in which alerts and messages exemplified in 74 are automatically displayed on the screen can be mentioned.

Also, on the project status management screen shown in FIG. 8, according to the operation of the user terminal 1, any subordinate node in the screen is determined as a new reference node, and based on the new reference node, A correlation diagram is provided that includes dependent nodes.

Each node is associated with process data and task data (for example, as metadata of each node, node names indicating processes such as "external design" and "connection test" are associated), as shown in FIG. As in the project status management screen, a figure 80 and a word 81 indicating a group of node attributes (for example, the same process of the project) may be displayed over the node correlation diagram. In this case, it is useful to show an overview of which process the deliverables registered in the repository belong to, and to grasp the update status of the deliverables of each process. Alternatively, when the user performs a predetermined operation (for example, right-clicking) on an arbitrary node using a device such as a mouse (not shown) provided in the user terminal 1, metadata such as the node name may be displayed in a popup. .

Also, on the project status management screen shown in FIG. 8, for example, by executing a chronological display request function (not shown), the correlation of nodes can be displayed chronologically (for example, by month within a predetermined period). Also good. Specifically, on a screen (not shown) that provides the chronological display request function, when the user designates an arbitrary period and performs an operation for executing the chronological display request function, the designated period and A monthly correlation diagram of the specified reference node is generated, and as shown in FIG. may be displayed in The display format specified based on the last update date (in Fig. 10, it is represented by solid lines, dashed lines, etc., but in fact different colors may be used) changes from month to month, indicating that the project is progressing smoothly. It is possible to grasp the situation. In the example shown in FIG. 10, the node correlation diagram for each month is arranged on one screen in chronological order of the (n)th month, the (n+1)th month, and the (n+2)th month after the start of the project. 10, the node name is not displayed, but the node name is displayed. It may be a form.
Also, the node correlation diagrams for each day may be continuously displayed in a moving image format.

The present invention can be provided for project management tools, project management support, and project consulting services.

REFERENCE SIGNS LIST 10 project status management device 11 repository 12 reference node extraction unit 13 dependent node extraction unit 14 metadata acquisition unit 15 node display control unit 16 search condition reception unit 17 display form change reception unit

Claims (6)

A project status management device comprising one or more computers,
a reference node extracting means for extracting, as a reference node, a node serving as a display reference from a plurality of nodes in a hierarchical relationship;
subordinate node extracting means for extracting a node subordinate to the reference node as a subordinate node;
metadata acquisition means for acquiring metadata of the plurality of nodes;
a node display control means for displaying the correlation between the reference node and the subordinate node in a predetermined form based on the metadata, with the reference node as a base point ;
The correlation between the reference node and the subordinate node corresponds to a hierarchical relationship in a tree structure specified by path information regarding a folder or file for recording information regarding a project,
The predetermined form is a concentric circle shape centered on the reference node, and a concentric circle shape in which the subordinate nodes in the same layer are arranged at equal distances from the reference node,
The node display control means varies the display form of each of the subordinate nodes according to the number of updates or update date and time of the folder or file corresponding to each of the subordinate nodes,
Project status management device. When the user performs a predetermined operation to specify any of the displayed subordinate nodes as a new reference node, the node display control means uses the new reference node as a base point to set the new reference node based on the metadata. display in the predetermined form the correlation between the reference node and the new subordinate node subordinate to the new reference node;
The project status management device according to claim 1 . moreover,
having means for accepting search conditions,
The search condition reception means receives search conditions from a terminal,
the reference node extracting means extracts the reference node based on the search condition;
The project status management device according to claim 1 or 2 . moreover,
having means for accepting display form change,
The display form change reception means receives display form information of a node from the terminal,
The display form information includes at least one of color, shape, size, and number of display layers,
The node display control means re-displays the form of the displayed node based on the display form information of the node.
The project situation management device according to claim 3 . A project status management method in which each step is executed in a project status management device comprising one or more computers,
a reference node extracting step of extracting a node serving as a display reference from a plurality of nodes in a hierarchical relationship as a reference node;
a subordinate node extracting step of extracting a node subordinate to the reference node as a subordinate node;
a metadata acquisition step of acquiring metadata of the plurality of nodes;
a node display control step of displaying the correlation between the reference node and the subordinate node in a predetermined form based on the metadata, with the reference node as a base point ;
The correlation between the reference node and the subordinate node corresponds to a hierarchical relationship in a tree structure specified by path information regarding a folder or file for recording information regarding a project,
The predetermined form is a concentric circle shape centered on the reference node, and a concentric circle shape in which the subordinate nodes in the same layer are arranged at equal distances from the reference node,
The node display control step includes changing the display form of each of the subordinate nodes according to the number of updates or update date and time of the folder or file corresponding to each of the subordinate nodes,
Project status management method. A computer program for causing one or more computers to function as respective means of a project situation management device, wherein the project situation management device comprises:
a reference node extracting means for extracting, as a reference node, a node serving as a display reference from a plurality of nodes in a hierarchical relationship;
subordinate node extracting means for extracting a node subordinate to the reference node as a subordinate node;
metadata acquisition means for acquiring metadata of the plurality of nodes;
a node display control means for displaying the correlation between the reference node and the subordinate node in a predetermined form based on the metadata, with the reference node as a base point ;
The correlation between the reference node and the subordinate node corresponds to a hierarchical relationship in a tree structure specified by path information regarding a folder or file for recording information regarding a project,
The predetermined form is a concentric circle shape centered on the reference node, and a concentric circle shape in which the subordinate nodes in the same layer are arranged at equal distances from the reference node,
The node display control means varies the display form of each of the subordinate nodes according to the number of updates or update date and time of the folder or file corresponding to each of the subordinate nodes,
computer program.

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