JP7249208B2 - Risk index calculation device, risk index calculation method and program - Google Patents

Description

The present invention relates to a risk index calculation device, a risk index calculation method, and a program for calculating a risk index that indicates the probability of work failure.

Conventionally, a system is known that controls an approval workflow according to the contents of an application submitted by an applicant. Patent Literature 1 discloses a technique for determining an approver based on the importance of an approval case.

JP 2009-193470 A

By the way, in the approval workflow, the more approvers there are, the more time it takes for all approvers to complete their approval, and the higher the approver's position in a company, the more difficult it becomes to approve. Therefore, the applicant arbitrarily underestimates the importance of the approval matter, that is, the risk of failure assumed when the requested work is carried out, thereby completing the approval workflow with fewer approvers. In some cases, there were problems such as shortening the time required for approval, and making it easier to proceed with the approval workflow by preventing the approver from having a higher position.

Therefore, the present invention has been made in view of these points. and to provide programs.

A risk index calculation device according to a first aspect of the present invention comprises: a completed work document indicating details of completed work performed in the past; a work information storage unit that associates and stores the completed risk index, which is the risk index corresponding to the above; a reception unit that receives input of a scheduled work document indicating the content of the scheduled work to be performed from the applicant; Based on the scheduled work document and the completed work document, an identifying unit that identifies one or more of the completed work similar to the scheduled work, and the one or more completed work identified by the identifying unit. a risk index calculation unit for calculating, as a scheduled risk index, which is the risk index corresponding to the scheduled work, a statistical value indicating the size of the one or more completed risk indexes stored in the work information storage unit in association with each other; and a workflow control unit for controlling an approval workflow for approving execution of the scheduled work based on the scheduled risk index calculated by the risk index calculation unit.

The identifying unit may identify the one or more completed work similar to some of the plurality of scheduled work items included in the scheduled work.
Based on a scheduled work vector obtained by converting the scheduled work document into a vector and a performed work vector obtained by converting the performed work document into a vector, for each of the completed work stored in the work information storage unit, It may further include a similarity calculation unit that calculates a similarity indicating the closeness between the scheduled work and the completed work. , the one or more performed tasks similar to the scheduled task may be identified.

The workflow control unit may determine an approver in the approval workflow based on a high probability that the scheduled work will fail indicated by the scheduled risk index.
The workflow control unit may notify the scheduled risk index calculated by the risk index calculation unit before an approver in the approval workflow approves execution of the scheduled work.

The receiving unit inputs attributes of the scheduled work from the applicant, including the equipment scheduled to perform the scheduled work and the number of users who use the services provided by the equipment scheduled to be performed. may be further received, and the risk index calculation unit may further calculate an attribute risk index, which is the risk index corresponding to the attribute of the scheduled work, based on the attribute of the scheduled work; The workflow control unit may control the approval workflow based on the scheduled risk index and the attribute risk index.

The work information storage unit stores attributes of the performed work including the performed equipment on which the performed work was performed and the number of users who use services provided by the performed equipment; Success or failure of the completed work may be stored in association with the risk index calculation unit, and the work information storage unit may store the work information storage unit in association with each of one or more attributes of the completed work similar to the attributes of the scheduled work. The attribute risk index may be calculated based on the success or failure of one or more of the performed tasks stored in the .

Applicant identification information that identifies the applicant may further include an applicant information storage unit that associates and stores the applicant credibility of the applicant, and the risk index calculation unit may may calculate the attribute risk index based on the applicant reliability stored in the applicant information storage unit in association with the applicant identification information corresponding to the applicant whose input is received.

The workflow control unit may control the operation of the approval workflow by the applicant when a difference between the planned risk index and the attribute risk index is equal to or greater than a predetermined threshold.
The risk index calculation unit may calculate an integrated risk index by integrating the scheduled risk index and the attribute risk index, and the workflow control unit controls the approval workflow based on the integrated risk index. You may

A risk index calculation method according to a second aspect of the present invention comprises a step of receiving, from an applicant, an input of a scheduled work document indicating details of scheduled work to be performed, which is executed by a computer; a step of identifying one or more performed work similar to the scheduled work based on a performed work document indicating details of performed work performed in the past; In a work information storage unit that associates and stores a completed risk indicator that is a risk indicator that indicates the probability of failure and that is the risk indicator corresponding to the completed work, for each of the identified one or more completed tasks: calculating a statistical value indicating the size of one or more of the completed risk indicators stored in association as a planned risk indicator corresponding to the planned work; and based on the calculated planned risk indicator. and controlling an approval workflow for approving performance of the scheduled work.

A program according to a third aspect of the present invention comprises: a computer, a reception unit that receives an input of a scheduled work document indicating details of a scheduled work that is scheduled to be performed from an applicant; an identification part for identifying one or more of the completed work similar to the scheduled work based on a completed work document indicating the content of the completed work; the completed work document; a work information storage unit that associates and stores an indicator with a completed risk indicator that is the risk indicator corresponding to the completed work, in association with each of the one or more completed tasks identified by the identifying unit; A risk index calculation unit that calculates a statistic value indicating the size of one or more stored risk indices that have been performed as a planned risk index that is the risk index corresponding to the scheduled work, and the risk index calculation unit calculates and a workflow control unit that controls an approval workflow for approving execution of the scheduled work based on the scheduled risk index.

ADVANTAGE OF THE INVENTION According to this invention, it is effective in the ability to objectively evaluate the risk of failure assumed when the requested work is performed.

1 is a diagram for explaining an overview of a risk index calculation system; FIG. It is a figure which shows the structure of a risk-index calculation apparatus. 4 is a diagram showing the structure of a database stored in a storage unit; FIG. FIG. 10 is a diagram showing an example of an input screen for an approval workflow service; FIG. 10 is a diagram showing an example of an input screen for an approval workflow service; FIG. 4 is a sequence diagram showing the flow of processing of the risk index calculation system;

[Overview of Risk Index Calculation System S]
FIG. 1 is a diagram for explaining the outline of the risk index calculation system S. As shown in FIG. The risk index calculation system S is a system that provides an approval workflow service. The approval workflow service is a service that controls the approval workflow for approving the execution of the work indicated by the content of the application according to the risk index calculated based on the content of the application applied by the applicant.

The risk index is, for example, a numerical value indicating the high probability that the work will fail. The risk index, for example, indicates that the higher the numerical value, the higher the probability that the work will fail, and the lower the numerical value, the lower the probability that the work will fail. The approval workflow service controls the approval workflow by, for example, determining an approver who approves the contents of an application and presenting a predetermined message to the applicant. The work in this specification is the work of changing at least part of the equipment owned by the company. It is the work of updating the software that is installed.

The risk index calculation system S has an applicant terminal 1 and a risk index calculation device 2 . Applicant terminal 1 is a terminal used by an applicant, such as a PC (Personal Computer). Applicant terminal 1 displays an input screen for inputting application content indicating work to be performed in the approval workflow service.

The risk index calculation device 2 is a device that manages an approval workflow service, such as a server. The risk index calculation device 2 associates and stores a completed work document indicating work of completed work performed in the past and a completed risk index that is a risk index corresponding to the completed work.

In this case, first, when the applicant uses the applicant terminal 1 to input a scheduled work document indicating the details of the scheduled work to be performed on the input screen of the approval workflow service, the risk index calculation device 2 , receives the input scheduled work document ((1) in FIG. 1). The risk index calculation device 2 identifies one or more completed work similar to the scheduled work based on the received scheduled work documents and a plurality of completed work documents stored in the risk index calculation device 2 ( (2) in FIG. 1).

The risk index calculation device 2 calculates a statistical value indicating the magnitude of one or more completed risk indices associated with each of the identified one or more completed tasks as a planned risk index, which is a risk index corresponding to the scheduled task. ((3) in FIG. 1). Then, the risk index calculation device 2 controls the approval workflow based on the calculated planned risk index ((4) in FIG. 1). The risk index calculation device 2 controls the approval workflow by, for example, determining an approver according to the numerical value indicated by the risk index.

By doing so, the risk index calculation system S can objectively evaluate the risk of failure assumed when the requested work is performed.
The configuration of the risk index calculation device 2 will be described below.

[Configuration of Risk Index Calculation Device 2]
FIG. 2 is a diagram showing the configuration of the risk index calculation device 2. As shown in FIG. The risk index calculation device 2 has a communication section 21 , a storage section 22 and a control section 23 . The communication unit 21 is an interface for connecting to a network, and includes, for example, a LAN controller.

The storage unit 22 is a storage medium such as a ROM (Read Only Memory), a RAM (Random Access Memory), and a hard disk. The storage unit 22 stores programs executed by the control unit 23 . The storage unit 22 stores a user information database that manages information on users (users and employees) belonging to a company, a work information database that manages information on completed work that has been performed in the past, and information on applicants. and an applicant information database to be managed.

FIG. 3 is a diagram showing the configuration of the database stored in the storage unit 22. As shown in FIG. The user information database shown in FIG. 3(a) associates and manages user identification information, affiliated organizations, directly superior organizations, and titles. User identification information is information for identifying a user who belongs to a company. The affiliated organization is information indicating the organization to which the user belongs. The immediately superior organization is information indicating the organization immediately superior to the belonging organization. The job title is information indicating the job title of the user. In the approval workflow service, for example, users with titles are determined as approvers.

The work information database shown in FIG. 3(b) includes completed work identification information, applicant identification information, completed work documents, completed risk indicators, attributes of completed work, and success or failure of completed work. are stored in association with each other. The performed work identification information is information for identifying the performed work. The applicant identification information is user identification information corresponding to the applicant who applied for the completed work. A completed work document is a document that indicates the details of completed work that has been performed in the past. The performed risk index is a risk index indicating the probability that the work will fail, and is a risk index corresponding to the performed work. The attributes of the completed work include the name of the completed facility in which the completed work was performed, and the number of users who use the service provided by the completed facility. The success or failure of the completed work indicates whether or not the work was successful.

The applicant information database shown in FIG. 3(c) associates and stores applicant identification information and applicant reliability. Applicant credibility is an index calculated based on, for example, the skill level of the applicant for work and the degree of divergence between two types of risk indices. The "applicant's skill level for work" is, for example, an index calculated based on the frequency of applying for work similar to the work in question. The "risk index divergence" is, for example, an index calculated based on the magnitude of the difference between the planned risk index and the attribute risk index described later.

The control unit 23 is, for example, a CPU (Central Processing Unit). The control unit 23 functions as a reception unit 231 , a similarity calculation unit 232 , an identification unit 233 , a risk index calculation unit 234 and a workflow control unit 235 by executing programs stored in the storage unit 22 .

The accepting unit 231 accepts, from the applicant via the communication unit 21, an input of a scheduled work document indicating details of scheduled work to be performed. The receiving unit 231 receives, for example, input of a scheduled work document by the applicant on the input screen of the approval workflow service displayed on the applicant terminal 1 .

The reception unit 231 further receives, from the applicant, input of attributes of the scheduled work, including the equipment to be performed for performing the scheduled work and the number of users who use the service provided by the equipment to be performed. good too. "Services provided using facilities to be implemented" are services provided externally, such as mobile phone communication services or online shopping services. The attribute of the scheduled work is information indicating the scale of the scheduled work, the scope of influence of the scheduled work, and the like, and is also information indicating the risk of failure of the work assumed by the applicant.

FIG. 4 is a diagram showing an example of an input screen for the approval workflow service. In the example shown in FIG. 4, the input screen includes fields for inputting applicant information, which is information about the applicant, fields for inputting attribute information indicating attributes of scheduled work, and fields for inputting work information indicating scheduled work documents. is displayed. For example, when the applicant enters information for performing the scheduled work in each input field and presses the application button, the reception unit 231 receives the input information (scheduled work document, attributes of the scheduled work, etc.). accept.

As in the example shown in FIG. 4, a scheduled work document may include multiple work items (eg, confirmation work, change work, backup work, etc.). For each work item shown in FIG. 4, for example, a plurality of predetermined options are displayed, and the applicant selects one of the multiple options for each work item, Enter the document corresponding to the work item shown in the text area.

Returning to FIG. 2, the similarity calculation unit 232 calculates a scheduled work vector obtained by converting a scheduled work document into a vector and a done work document converted into a vector for each completed work stored in the work information database. Based on the work vectors, a degree of similarity indicating the closeness between the scheduled work and the completed work is calculated. For example, for each completed work stored in the work information database, the similarity calculation unit 232 performs morphological analysis on the completed work document and the scheduled work document, and calculates a plurality of morphemes analyzed by the morphological analysis. Based on a plurality of morphemes belonging to nouns, a planned work vector and a completed work vector are calculated. The similarity calculation unit 232 can calculate the planned work vector and the performed work vector using known techniques such as BoW (Bag of Words), for example.

The similarity calculation unit 232 extracts some scheduled work items from among a plurality of scheduled work items that are work items included in the scheduled work document, and calculates a scheduled work vector based on the scheduled work document of the extracted scheduled work items. and a performed work vector may be calculated. Some of the work items extracted by the similarity calculation unit 232 are work items that indicate characteristic work that characterizes the entire scheduled work among the plurality of work items included in the scheduled work document. For example, if the work name indicating the work purpose is hardware replacement and the scheduled work document includes work items of preparation work, replacement work, and confirmation work, the replacement work corresponds to the feature work. Work items extracted as characteristic work are set in the risk index calculation device 2 in advance, for example.

For example, the similarity calculation unit 232 extracts some scheduled work items from the scheduled work document, and extracts some of the performed work items among the work items included in the performed work document. Completed work items may be extracted. In this case, the similarity calculation unit 232 calculates the scheduled work vector and the completed work based on the scheduled work documents of the extracted part of the scheduled work items and the performed work documents of the extracted part of the performed work items. A vector may be calculated.

The identifying unit 233 identifies one or more completed work similar to the scheduled work based on the scheduled work document and the completed work document. Specifically, the identifying unit 233 identifies one or more completed work similar to the scheduled work based on a plurality of similarities calculated by the similarity calculating unit 232 . The identifying unit 233 identifies, for example, one or more completed tasks corresponding to one or more degrees of similarity that are more similar than a predetermined threshold among the plurality of degrees of similarity calculated by the degree-of-similarity calculating unit 232 . The predetermined threshold is set in the risk index calculation device 2 in advance, for example.

The identifying unit 233 may identify one or more completed works that are similar to some of the scheduled work items included in the scheduled work. Specifically, for each performed work stored in the work information database, the identifying unit 233 performs One or more performed tasks similar to the scheduled task may be specified based on the plurality of similarities calculated by the method. By doing so, the identifying unit 233 can improve the accuracy of identifying completed work similar to the scheduled work.

The risk index calculation unit 234 associates each of the one or more completed tasks identified by the identifying unit 233 with the statistical values indicating the magnitude of one or more completed risk indices stored in the work information database, corresponding to the scheduled work. It is calculated as a planned risk index, which is a risk index that A statistical value is, for example, an average value, a median value, or the like. By doing so, the risk index calculator 234 can objectively calculate an index indicating the risk of failure assumed when the work is performed.

The risk index calculator 234 may further calculate an attribute risk index, which is a risk index corresponding to the attribute of the scheduled work, based on the attribute of the scheduled work. For example, each attribute of the scheduled work is associated with a predetermined numerical value, and the risk index calculation unit 234 calculates based on the numerical value associated with each attribute of the scheduled work selected by the applicant. Calculate the attribute risk index. For example, the risk index calculation unit 234 may calculate, as an attribute risk index, a numerical value obtained by totaling a plurality of numerical values associated with each attribute of the scheduled work selected by the applicant. An average value of a plurality of numerical values associated with each attribute of scheduled work may be calculated as an attribute risk index. By doing so, the risk index calculation unit 234 can calculate an index indicating the risk of work failure assumed by the applicant.

The risk index calculator 234 calculates the success or failure of one or more completed tasks stored in the task information database in association with each attribute of one or more completed tasks similar to the attribute of the scheduled task whose input is received by the receiver 231. You may calculate an attribute risk index based on. For example, the risk index calculation unit 234 calculates one or more completed works stored in the work information database in association with each attribute of one or more completed works similar to the attribute of the scheduled work whose input is received by the reception unit 231. , an attribute risk index may be calculated in which the higher the ratio of successful completed work, the lower the probability that the work will fail. On the other hand, the risk index calculation unit 234, for example, calculates one or more performance data stored in the work information database in association with each of the attributes of one or more completed work similar to the attribute of the scheduled work whose input is received by the reception unit 231. An attribute risk index may be calculated that indicates that the higher the percentage of failed completed tasks in the completed tasks, the higher the probability that the task will fail.

The risk index calculation unit 234 calculates the attribute risk index using a predetermined machine learning model trained using, for example, the attributes of the completed work stored in the work information database and the success or failure of the completed work as training data. You may The predetermined machine learning model is, for example, a model generated by a known algorithm such as the Naive Bayes method, and outputs a likelihood indicating the success or failure of the scheduled work when attributes of the scheduled work are input. The risk index calculator 234 may, for example, input the attribute of the scheduled work into a predetermined machine learning model and calculate the attribute risk index based on the likelihood output by the predetermined machine learning model. The risk index calculation unit 234 may calculate, for example, the likelihood output by a predetermined machine learning model as an attribute risk index, or may be calculated in the same manner as the unit of the planned risk index (effective range of numerical values indicated by the planned risk index). A normalized likelihood may be calculated as an attribute risk index. In this way, the risk index calculation unit 234 calculates the attribute risk index using the success or failure of the completed work, thereby objectively calculating the index indicating the risk of failure assumed when the work is performed. can be done.

The risk index calculation unit 234 calculates the attribute risk index based on the applicant reliability stored in the applicant information database in association with the applicant identification information corresponding to the applicant whose input is received by the reception unit 231. may For example, the risk index calculation unit 234 calculates an attribute risk index indicating that the higher the applicant reliability, the lower the probability that the work will fail, and the lower the applicant reliability, the higher the probability that the work will fail. You may calculate the attribute risk index which shows. By doing so, the risk index calculation unit 234 can calculate an index indicating the risk of work failure assumed by the applicant.

The risk index calculator 234 may calculate an integrated risk index by integrating the planned risk index and the attribute risk index. For example, the risk index calculation unit 234 may calculate the total value of the planned risk index and the attribute risk index as the integrated risk index, or may calculate the statistical values of the planned risk index and the attribute risk index as the integrated risk index. good. Further, the risk index calculator 234 may calculate the statistical values of the planned risk index and the attribute risk index as the integrated risk index after weighting each of the planned risk index and the attribute risk index. Coefficients corresponding to each of the planned risk index and the attribute risk index used for weighting are preset in the risk index calculation device 2, for example. By doing so, the risk index calculation unit 234 can calculate an index that takes into consideration an objective index based on completed work similar to scheduled work and an applicant's subjective index.

The workflow control unit 235 controls the approval workflow for approving the execution of the scheduled work based on the planned risk index calculated by the risk index calculation unit 234. FIG. The workflow control unit 235 controls the approval workflow by determining an approver in the approval workflow, for example, based on the probability of failure of the scheduled work indicated by the scheduled risk index. Specifically, in a hierarchical organization, the higher the probability that the scheduled work indicated by the scheduled risk index will fail, the higher the workflow control unit 235 determines the administrator of the higher-level organization as the approver in the approval workflow. The lower the probability that the scheduled work indicated by the risk index will fail, the lower the organization manager determined as the approver in the approval workflow.

For example, assume that the organization is hierarchical in order of Company A, Headquarters B, Department C, and Group D, and the applicant belongs to Group D. In this case, when the workflow control unit 235 determines a user having a position in department C in the work information database (for example, a manager) as an approver in the approval workflow, the workflow control unit 235 determines a user having a position in group D in the work information database (for example, group leader) is determined as an approver, and a user who has the post of C department in the work information database is determined as the final approver. By doing so, the workflow control unit 235 can determine an approver suitable for the high probability of failure assumed when the work indicated by the scheduled risk index is performed in the approval workflow.

The workflow control unit 235 may control the approval workflow by notifying the scheduled risk index calculated by the risk index calculation unit 234 before the approver in the approval workflow approves the execution of the scheduled work. The workflow control unit 235 may notify the planned risk index by, for example, displaying the planned risk index calculated by the risk index calculation unit 234 on the approval screen provided to the approver in the approval workflow service. By doing so, the workflow control unit 235 can support the approval action by the approver.

The workflow control section 235 may control the approval workflow based on the scheduled risk index and the attribute risk index. Specifically, the workflow control unit 235 may control the operation of the approval workflow by the applicant when the difference between the planned risk index and the attribute risk index is equal to or greater than a predetermined threshold. The predetermined threshold is set in the risk index calculation device 2 in advance, for example.

FIG. 5 is a diagram showing an example of an input screen for the approval workflow service. In the example shown in FIG. 5, when the difference between the scheduled risk index and the attribute risk index is equal to or greater than a predetermined threshold, the workflow control unit 235 Approval workflow may be controlled by displaying a warning message indicating that a Further, the workflow control unit 235 controls so that the application button provided on the input screen of the approval workflow service cannot be pressed when, for example, the difference between the scheduled risk index and the attribute risk index is equal to or greater than a predetermined threshold. may control the approval workflow. By doing so, the workflow control unit 235 can make the applicant aware that there is a discrepancy between the planned risk index and the attribute risk index.

Returning to FIG. 2, the workflow control section 235 may control the approval workflow based on the integrated risk index. The workflow control unit 235 may control the approval workflow by, for example, determining an approver in the approval workflow based on the probability that the scheduled work will fail indicated by the integrated risk index. By doing so, the workflow control unit 235 can control the approval workflow in consideration of the objective risk index (planned risk index) and the applicant's subjective risk index (attribute risk index). can be done.

[Processing of Risk Index Calculation System S]
Next, processing of the risk index calculation system S will be described. FIG. 6 is a sequence diagram showing the flow of processing of the risk index calculation system S. As shown in FIG. This processing is started when the applicant accesses the approval workflow service using the applicant terminal 1 and enters a scheduled work document on the input screen of the approval workflow service displayed on the applicant terminal 1 ( S1).

When the reception unit 231 receives the input of the scheduled work document from the applicant, the similarity calculation unit 232 corresponds to the performed work document indicating the performed work for each performed work stored in the work information database. A degree of similarity is calculated based on the performed work vector and the scheduled work vector corresponding to the scheduled work document received by the receiving unit 231 (S2, S3).

The identifying unit 233 identifies one or more completed tasks similar to the scheduled task based on the plurality of similarities calculated by the similarity calculating unit 232 (S4). The risk index calculation unit 234 calculates, as a planned risk index, a statistical value indicating the magnitude of one or more completed risk indices stored in the work information database in association with each of the one or more completed tasks identified by the identification unit 233. (S5). Based on the planned risk index calculated by the risk index calculation unit 234, the workflow control unit 235 controls the approval workflow for approving the execution of the scheduled work.

[Effects of this embodiment]
As described above, the risk index calculation system S generates statistical values indicating the size of one or more completed risk indices corresponding to one or more completed work similar to the scheduled work document input by the applicant, to the scheduled work. Calculate as a corresponding planned risk index, and control the approval workflow based on the calculated planned risk index. By doing so, the risk index calculation system S can objectively evaluate the risk of failure assumed when the requested work is performed.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist thereof. be. For example, all or part of the device can be functionally or physically distributed and integrated in arbitrary units. In addition, new embodiments resulting from arbitrary combinations of multiple embodiments are also included in the embodiments of the present invention. The effect of the new embodiment caused by the combination has the effect of the original embodiment.

1 applicant terminal 2 risk index calculation device 21 communication unit 22 storage unit 23 control unit 231 reception unit 232 similarity calculation unit 233 identification unit 234 risk index calculation unit 235 workflow control unit S risk index calculation system

Claims (12)

Associating a completed work document indicating the details of completed work performed in the past with a completed risk indicator, which is a risk index indicating the probability of failure of the work and is the risk indicator corresponding to the completed work a work information storage unit that stores the
a receiving unit that receives input from the applicant of a scheduled work document indicating the content of the scheduled work to be performed;
an identifying unit that identifies one or more of the completed work similar to the scheduled work based on the scheduled work document and the completed work document;
Statistical values indicating the size of one or more of the completed risk indicators stored in the work information storage unit in association with each of the one or more completed tasks identified by the identifying unit, the statistical values corresponding to the scheduled work a risk index calculation unit that calculates a planned risk index, which is a risk index;
a workflow control unit that controls an approval workflow for approving execution of the scheduled work based on the scheduled risk index calculated by the risk index calculation unit;
A risk index calculation device having The identifying unit identifies the one or more completed work similar to some of the plurality of scheduled work items included in the scheduled work,
The risk index calculation device according to claim 1. Based on a scheduled work vector obtained by converting the scheduled work document into a vector and a performed work vector obtained by converting the performed work document into a vector, for each of the completed work stored in the work information storage unit, further comprising a similarity calculation unit that calculates a similarity indicating the closeness between the scheduled work and the completed work;
The identifying unit identifies the one or more completed work similar to the scheduled work based on the plurality of similarities calculated by the similarity calculation unit.
The risk index calculation device according to claim 1 or 2. The workflow control unit determines an approver in the approval workflow based on the probability that the scheduled work will fail indicated by the scheduled risk index.
The risk index calculation device according to any one of claims 1 to 3. The workflow control unit notifies the scheduled risk index calculated by the risk index calculation unit before an approver in the approval workflow approves the execution of the scheduled work.
The risk index calculation device according to any one of claims 1 to 4. The receiving unit inputs attributes of the scheduled work from the applicant, including the equipment scheduled to perform the scheduled work and the number of users who use the services provided by the equipment scheduled to be performed. further accepts
The risk index calculation unit further calculates an attribute risk index, which is the risk index corresponding to the attribute of the scheduled work, based on the attribute of the scheduled work,
The workflow control unit controls the approval workflow based on the scheduled risk index and the attribute risk index.
The risk index calculation device according to any one of claims 1 to 5. The work information storage unit stores attributes of the performed work including the performed equipment on which the performed work was performed and the number of users who use services provided by the performed equipment; further associates and stores the success or failure of the performed work,
The risk index calculation unit calculates success or failure of one or more of the completed tasks stored in the task information storage unit in association with each of the attributes of one or more completed tasks that are similar to the attributes of the scheduled task. , calculating said attribute risk index;
The risk index calculation device according to claim 6. further comprising an applicant information storage unit that associates and stores the applicant identification information that identifies the applicant and the applicant reliability of the applicant;
The risk index calculation unit calculates the calculating an attribute risk index;
The risk index calculation device according to claim 6 or 7. The workflow control unit controls the operation of the approval workflow by the applicant when a difference between the scheduled risk index and the attribute risk index is equal to or greater than a predetermined threshold.
The risk index calculation device according to any one of claims 6 to 8. The risk index calculation unit calculates an integrated risk index by integrating the scheduled risk index and the attribute risk index,
the workflow control unit controls the approval workflow based on the integrated risk index;
The risk index calculation device according to any one of claims 6 to 9. the computer runs
a step of receiving, from an applicant, input of a scheduled work document indicating details of scheduled work to be performed;
identifying one or more completed work similar to the scheduled work based on the scheduled work document and a completed work document indicating details of completed work performed in the past;
In a work information storage unit that associates and stores the completed work document and a completed risk indicator that is a risk indicator that indicates the probability that the work will fail and that is the risk indicator that corresponds to the completed work, a step of calculating a statistic value indicating the magnitude of one or more of the completed risk indicators stored in association with each of the one or more completed tasks as a planned risk indicator, which is the risk indicator corresponding to the scheduled task; ,
controlling an approval workflow for approving execution of the scheduled work based on the calculated scheduled risk index;
A risk index calculation method having the computer,
a reception unit that receives input from the applicant of a scheduled work document indicating the content of the scheduled work to be performed;
an identification unit that identifies one or more of the completed work similar to the scheduled work based on the scheduled work document and the completed work document indicating the details of the previously performed work;
In the work information storage unit that associates and stores the executed work document and a completed risk index that is the risk index that indicates the probability of failure of the work and that is the risk index corresponding to the executed work, the identification Statistical values indicating the size of one or more of the completed risk indicators stored in association with each of the one or more completed tasks identified by the department as a planned risk indicator, which is the risk indicator corresponding to the scheduled task a risk index calculation unit for calculating; and a workflow control unit for controlling an approval workflow for approving execution of the scheduled work based on the scheduled risk index calculated by the risk index calculation unit;
A program that acts as a

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