Investment plan assistance system, investment plan assistance method, and investment plan assistance program

Abstract

To obtain an investment plan assistance system that enables determination by a user on whether a plurality of investment plans are good to be assisted more appropriately.SOLUTION: An investment plan assistance system 1 according to the present disclosure comprises: a difference calculation unit 13 which, by using the risk and cost obtained by an investment simulation corresponding to each of a reference plan which is one of a plurality of investment plans to a facility of interest and a plan to be compared which is an investment plan other than the reference plan, calculates, for each plan to be compared, the difference between the plan to be compared and the reference plan regarding risk and cost, respectively; and a display processing unit 14 which generates risk evaluation information indicating the internal ratio of the facility of interest corresponding to a combination of values of damage degree and risk impact degree of each of the reference plan and the plan to be compared, that are obtained by an investment simulation, generates first display data, including the difference and the risk evaluation information, for displaying a first display screen, and outputs the first display data to a display device 2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an investment plan support system, an investment plan support method, and an investment plan support program that support the formulation of investment plans for equipment. [Background technology]

[0002] When formulating an investment plan for various facilities, including social infrastructure facilities that are developed as the foundation of social life, the user formulating the investment plan takes into consideration, for example, costs (expenses) and risks.

[0003] Patent Document 1 discloses a system that generates multiple maintenance plans with randomly changed maintenance dates and types of maintenance, i.e., multiple maintenance plans with different scenarios, quantitatively evaluates the risks and costs of the multiple maintenance plans, and displays the evaluation results for the multiple maintenance plans. This maintenance plan includes a prediction of the costs required for maintenance and is also a maintenance investment plan. The technology described in Patent Document 1 allows users to check the risks and costs of multiple maintenance plans at a bird's-eye view. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-157793 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the technology described in Patent Document 1 can only compare total risks and costs, and is unable to grasp the breakdown of risks and costs within the facility. Therefore, in order for the user to determine the adequacy of each maintenance plan, the user needs to check the individual information in more detail, and the user is unable to smoothly determine the adequacy of each maintenance plan.

[0006] The present disclosure has been made in consideration of the above, and aims to provide an investment plan support system that can more appropriately support a user's judgment regarding the merits of multiple investment plans. [Means for solving the problem]

[0007] To solve the above-mentioned problems and achieve the object, the investment plan support system according to the present disclosure includes a difference calculation unit that calculates, for each of the comparison plans, a difference between the comparison plan and a reference plan in terms of each of the risks and costs, using risks and costs determined by investment simulations corresponding to a reference plan, which is one of multiple investment plans for a target facility, and one or more comparison plans, which are investment plans other than the reference plan. The investment plan support system further includes a display processing unit that generates risk assessment information indicating a ratio within the target facility corresponding to a combination of values ​​of the damage degree and the risk impact degree determined by the investment simulations for each of the reference plan and the comparison plan, generates first display data for displaying a first display screen including the difference and the risk assessment information for each of the reference plan and the comparison plan, and outputs the first display data to a display device. [Effects of the Invention]

[0008] The investment plan support system of the present disclosure has the effect of more appropriately supporting a user's judgment regarding the merits and demerits of multiple investment plans. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram illustrating a configuration example of an investment plan support system according to a first embodiment. [Figure 2] 1 is a flowchart showing an example of an investment plan support processing procedure in the investment plan support system according to the first embodiment. [Figure 3] FIG. 1 is a diagram showing an example of master plan information according to the first embodiment; [Figure 4] FIG. 10 is a diagram showing an example of information on the number of supported facilities according to the first embodiment; [Figure 5]FIG. 1 is a diagram showing an example of cost / risk information according to the first embodiment. [Figure 6] FIG. 10 is a diagram showing an example of a display screen according to the first embodiment; [Figure 7] FIG. 1 is a diagram for explaining a method for displaying risk assessment information according to the first embodiment. [Figure 8] FIG. 10 is a diagram showing an example of another display method of risk assessment information according to the first embodiment. [Figure 9] FIG. 10 is a diagram showing an example of a display screen according to the first embodiment when there are multiple plans to be compared. [Figure 10] FIG. 10 is a diagram showing another example of the display screen of the first embodiment. [Figure 11] FIG. 1 is a diagram showing an example of the configuration of a computer system that realizes the investment plan support system according to the first embodiment. [Figure 12] 10 is a flowchart showing a processing procedure for displaying a second display screen in the investment plan support system according to the second embodiment. [Figure 13] FIG. 10 is a diagram showing an example of buttons for screen transitions according to the second embodiment. [Figure 14] FIG. 10 is a diagram showing an example of a facility selection screen according to the second embodiment; [Figure 15] An enlarged view of the area where the investment simulation information is displayed, as shown in Figure 14. [Figure 16] FIG. 10 is a diagram showing an example of a second display screen according to the second embodiment. [Figure 17] 10 is a flowchart showing a processing procedure for displaying a third display screen in the investment plan support system according to the second embodiment. [Figure 18] FIG. 10 is a diagram showing an example of a third display screen according to the second embodiment. [Figure 19] An enlarged view of the area in Figure 18 where the differences in investment simulation information are displayed. DETAILED DESCRIPTION OF THE INVENTION

[0010] An investment plan support system, an investment plan support method, and an investment plan support program according to embodiments will be described in detail below with reference to the accompanying drawings.

[0011] Embodiment 1 FIG. 1 is a diagram illustrating an example of the configuration of an investment plan support system 1 according to a first embodiment. The investment plan support system 1 of this embodiment supports the formulation of investment plans for facilities. Facilities for which investment plans are formulated (hereinafter also referred to as target facilities) are, for example, social infrastructure facilities such as tunnels, bridges, roads, power system facilities, water supply and sewerage facilities, railways, and associated electrical and mechanical facilities, but may also be factory facilities in companies and are not limited to social infrastructure facilities. The investment plan is an investment plan for the target facilities, for example, an investment plan related to the maintenance and preservation of the target facilities, but is not limited to this.

[0012] As shown in FIG. 1, the investment plan support system 1 includes an input reception unit 11, a data acquisition unit 12, a variance calculation unit 13, a display processing unit 14, and an information storage unit 15. The information storage unit 15 stores an equipment information DB (DataBase) and an investment plan information DB. The equipment information DB is a database of equipment information related to the target equipment, and the investment plan information DB is a database of investment plan information, which is information related to the investment plan of the target equipment. Note that, although an example in which equipment information and investment plan information are stored in the information storage unit 15 as a database will be described here, this is not limiting, and the information storage unit 15 only needs to store equipment information and investment plan information, and there are no particular restrictions on the format of the information stored.

[0013] Facility information is information about at least one of the facilities and structures (hereinafter also referred to as facilities / structures) that make up the target facility. Generally, the target facility is made up of multiple facilities and structures. For example, if the target facility is a bridge, the facilities and structures include the piers, abutments, skeleton, and superstructure. Hereinafter, the facilities and structures that make up the target facility will also be simply referred to as facilities.

[0014] The equipment information includes, but is not limited to, at least one of deterioration prediction information, specifications, inspection results, and related equipment information for each piece of equipment constituting the target equipment. The specifications include, for example, the date of completion, the equipment lifespan, and the renewal deadline. The deterioration prediction information indicates the predicted results of equipment deterioration for a certain period of time. For example, the deterioration prediction information is generated by a deterioration prediction device (deterioration prediction system) (not shown) and pre-stored in the information storage unit 15. The deterioration prediction device generates the deterioration prediction information by predicting the damage level (degree of deterioration) of the equipment, such as the deterioration level and soundness, using a prediction model generated based on the deterioration state of the equipment obtained from past inspection results. The prediction model may be a prediction formula that indicates the relationship between the passage of time and the damage level, calculated using the least squares method or the like, a prediction model that applies a Markov chain model, or a trained model generated by machine learning such as supervised learning or unsupervised learning. For example, the prediction model may be a table that associates the damage level at the transition source, the damage level at the transition destination after a certain time period, and the soundness transition probability with each other. The method for generating the deterioration prediction information is not limited to the above-mentioned example, and a general method can be used, so detailed description thereof will be omitted.

[0015] The degree of damage is predetermined depending on the type of equipment and is indicated by a number in multiple stages. Hereinafter, the degree of damage is expressed, for example, by a number from 1 to 4, with a larger number indicating more advanced deterioration, but it may also be expressed by a number in five stages, for example, and the method of expressing the degree of damage is not limited to this example. Hereinafter, the degree of damage is also referred to as PoF (Probability of Failure).

[0016] The specifications include, for example, but are not limited to, the type of equipment, the specifications of the equipment, the installation location of the equipment, and the installation date of the equipment. The inspection results are information that associates a report card, which is the result of the equipment inspection, with information indicating the date and time the inspection was performed. The inspection results may only include information about the most recent inspection, or may include information about inspections prior to the most recent. The related equipment information is information that indicates the relationship with other equipment, such as the parent-child relationship of equipment. For example, the related equipment information may include information indicating the parent equipment (parent equipment) if there is parent equipment for a certain equipment, or may include information indicating the child equipment (child equipment) if there is child equipment for a certain equipment.

[0017] The investment plan information includes the scenario setting values ​​and The investment simulation information includes investment simulation information. In this embodiment, investment simulations are performed for multiple investment plans corresponding to different scenarios, and the investment plan information includes information about each investment plan. The scenario setting values ​​indicate setting values ​​for the scenarios corresponding to each investment plan. The different scenarios may be scenarios with different maintenance policies, such as corrective maintenance, application of an optimization model, or consideration of budget allocation, or may be scenarios with different objective functions of the optimization model (e.g., repair cost priority, risk cost priority, etc.) or budget allocation methods (the same total budget but different budget ratios for each fiscal year). The scenario setting values ​​include, for example, identification information for the target equipment, identification information for the corresponding plan (plan ID (IDentifier)), the name of the investment plan (name of the scenario), the number of equipment / structures (number of equipment / structures), the planning period, the number of years planned, and the timing of equipment repair and replacement. Note that if the investment plan support system 1 supports the formulation of an investment plan for only one target equipment, the scenario setting values ​​do not need to include identification information for the target equipment. Here, a case will be described in which the investment plan support system 1 supports the formulation of an investment plan for a plurality of pieces of target equipment, but the number of pieces of target equipment for which the investment plan support system 1 supports the formulation of an investment plan may be one.

[0018] The investment simulation information is created by performing an investment simulation based on the scenario setting values ​​of the corresponding investment plan. The investment simulation is created, for example, by an investment planning device (investment planning system) not shown, but is not limited to this. The investment planning device and the above-mentioned deterioration prediction device may be integrated. The investment simulation information includes cost / risk information indicating the cost and risk for each unit period. The investment simulation information may also include corresponding facility number information indicating the degree of damage, the degree of risk impact (CoF: Consequence of Failure), and the number of facilities (number of facilities / structures) to be repaired for each unit period. The unit period is, for example, one year, but is not limited to this.

[0019] PoF is calculated by having the user set the correspondence between the state of deterioration, such as the presence or absence of deterioration such as cracks, and a numerical value indicating the degree of deterioration, and then determining a numerical value corresponding to the deterioration prediction result in the investment simulation based on this correspondence. CoF indicates the cost, which will be described later, in stages. For example, if CoF is 1, the correspondence with cost is determined in advance, such as 0 yen to 10 million yen, if CoF is 2, 10 million yen to 100 million yen, if CoF is 3, 100 million yen to 1 billion yen, and if CoF is 4, 1 billion yen to 10 billion yen. This correspondence with cost may be set by the user.

[0020] The cost may be, for example, a repair cost, which indicates the cost required to carry out repairs based on the scenario. This cost may be, for example, an expected value of the cost calculated assuming a high probability of occurrence of damage to the equipment.

[0021] The risk is, for example, a risk cost, which is the monetary equivalent of the impact of damage. The risk cost is calculated using a risk cost table, which indicates the amount for each level of damage, with the amount determined in advance according to the level of damage. However, this is not limited to this. In the risk cost table, for example, the impact of damage to a bridge with heavy traffic is high, so the amount of risk cost is set high. The risk impact level indicates the risk using a numerical value, such as four levels, with a higher numerical value indicating a higher risk. Note that the risk may be, for example, an amount corresponding to the upper limit of the confidence interval of the cost calculated probabilistically, and is not limited to the above-mentioned example.

[0022] The investment plan information may include reference plan information indicating which of the multiple investment plans is a reference plan. The reference plan is one of the multiple investment plans and serves as a basis when two or more investment plans are compared, and is designated, for example, by a user, as described below.

[0023] The input accepting unit 11 accepts input from a user and outputs input information indicating the content of the accepted input to the data acquiring unit 12. The input information includes, for example, information indicating the investment plan selected by the user as the base plan, i.e., the selection result of the base plan. Note that the input accepting unit 11 may acquire the input information by a terminal device (not shown) operable by the user accepting input from the user and receiving input information indicating the content of the accepted input from the terminal device. In this case, the display device 2 shown in FIG. 1 may be the terminal device.

[0024] The data acquisition unit 12 reads data stored in the information storage unit 15. The data acquisition unit 12 may also write data to the information storage unit 15. For example, the data acquisition unit 12 reads data from the information storage unit 15 in accordance with input information received from the input reception unit 11, and outputs the read data to the variance calculation unit 13. For example, based on the selection result of the base plan received from the input reception unit 11, the data acquisition unit 12 reads data related to the base plan and data of other plans whose target equipment and planning period are equal to those of the base plan in the scenario setting from the information storage unit 15, and outputs the read data to the variance calculation unit 13. The other plans are one or more investment plans other than the base plan, and are comparison plans to be compared with the base plan.

[0025] The variance calculation unit 13 calculates the differences between the comparison plan and the reference plan in terms of risk and cost for each comparison plan using the risks and costs obtained by investment simulations corresponding to the reference plan and the comparison plan. Specifically, the variance calculation unit 13 uses data received from the data acquisition unit 12 to calculate the cost difference between the comparison plan and the reference plan and the risk difference between the comparison plan and the reference plan, and outputs the calculation results and the data received from the data acquisition unit 12 to the display processing unit 14. For example, the variance calculation unit 13 may calculate the total risk value for each of the comparison plan and the reference plan over the planning period, and calculate the difference by subtracting the total risk value of the reference plan from the total risk value of the comparison plan. Alternatively, the variance calculation unit 13 may calculate the difference from the reference plan by dividing the difference, expressed as a percentage, by the risk of the reference plan.

[0026] Similarly, for costs, the variance calculation unit 13 may calculate the variance by subtracting the total cost of the baseline plan from the total cost of the comparison plan, or may calculate the variance from the baseline plan by subtracting the total cost of the comparison plan from the total cost of the baseline plan, expressed as a percentage. The variance from the baseline plan is calculated with a positive or negative sign, i.e., so as to indicate whether the actual cost is greater or smaller than the baseline plan. Note that the cost variance and risk variance may be calculated so as to indicate whether the actual cost is greater or smaller than the baseline plan and the degree of the variance, and the method for calculating the cost variance and risk variance is not limited to the above-mentioned example.

[0027] The display processing unit 14 generates risk assessment information indicating the ratio within the target facility corresponding to the combination of the damage level and risk impact level values ​​obtained by the investment simulation for each of the base plan and the comparison plan. Specifically, the display processing unit 14 generates the risk assessment information using data received from the data acquisition unit 12. The ratio is, for example, a ratio corresponding to the number of facilities (number of facilities) corresponding to the combination of the damage level and risk impact level values. For example, the ratio is the ratio of the number of facilities corresponding to the combination of the damage level and risk impact level values ​​to the total number of facilities. The ratio may also be, for example, the ratio of the area or length of the target facility, the ratio of the volume of the target facility, or other ratios. For example, the ratio of the area, length, volume, etc. of each facility to the entire target facility may be determined in advance, and the display processing unit 14 may calculate the sum of the ratios of the area, length, volume, etc. of the facility corresponding to each combination of the damage level and risk impact level values. Details of the risk assessment information will be described later.

[0028] The display processing unit 14 generates display data (first display data) for displaying a display screen (first display screen) including the variance calculated by the variance calculation unit 13 and the risk assessment information for each of the base plan and the compared plan, and outputs the display data to the display device 2. Specifically, the display processing unit 14 generates display data for displaying a display screen including the calculation results received from the variance calculation unit 13 and the risk assessment information for the base plan and the compared plan, and outputs the generated display data to the display device 2. The display device 2 displays a display screen including the calculation results received from the variance calculation unit 13 and the risk assessment information by performing a display using the display data received from the display processing unit 14. The display screen displayed on the display device 2 will be described in detail later.

[0029] 1, the display device 2 is provided outside the investment plan support system 1, but this is not limiting and the display device 2 may be provided inside the investment plan support system 1. Also, in FIG. 1, the equipment information DB and the investment plan information DB are stored in the information storage unit 15 of the investment plan support system 1, but a database system that stores the equipment information DB and the investment plan information DB may be provided separately from the investment plan support system 1, and the data acquisition unit 12 may acquire data from that database system.

[0030] In this embodiment, as described above, the investment plan support system 1 generates display data for displaying a display screen including the differences between the base plan and the comparison plan with respect to each of risk and cost, and risk assessment information for the base plan and the comparison plan, and outputs the display data to the display device 2. This allows the investment plan support system 1 to more appropriately support the user's judgment regarding the merits and demerits of multiple investment plans, compared to a case in which the above-mentioned differences and risk assessment information are not displayed.

[0031] Next, the operation of this embodiment will be described. Fig. 2 is a flowchart showing an example of an investment plan support processing procedure in the investment plan support system 1 of this embodiment. As shown in Fig. 2, the investment plan support system 1 accepts a selection of a reference plan and stores the reference plan (step S1). In detail, the input receiving unit 11 accepts the selection of a reference plan and outputs the accepted selection result to the data acquiring unit 12, and the data acquiring unit 12 stores the reference plan corresponding to the selection result in the information storage unit 15. For example, the data acquiring unit 12 stores information indicating the reference plan in the information storage unit 15 by updating the reference plan information in the investment plan information.

[0032] FIG. 3 is a diagram illustrating an example of the master plan information according to the present embodiment. In the example illustrated in FIG. 3, the master plan information includes a master flag indicating whether or not the master plan is a master plan for each plan ID, which is identification information for the investment plan. In the example illustrated in FIG. 3, the master flag takes a value of True or False. If the investment plan corresponding to the plan ID is a master plan, the master flag is set to True. If the investment plan corresponding to the plan ID is not a master plan, the master flag is set to False. When the input receiving unit 11 receives the selection of a master plan, the data acquiring unit 12 sets the master flag of the plan ID corresponding to the investment plan selected as the master plan to True and sets the master flag of the plan IDs other than the selected investment plan to False. Note that FIG. 3 is merely an example, and the method of storing the master plan is not limited to this example. For example, the master flag may be represented by a value of 0 or 1, or the plan ID of the master plan may be stored in the information storage unit 15 as master plan information without using a master flag.

[0033] Returning to the explanation of FIG. 2 , the investment plan support system 1 acquires data on other plans (other than the baseline plan) whose target equipment and planning period are equal to those of the baseline plan in the scenario setting (step S2). Specifically, the data acquisition unit 12 references the scenario setting values ​​of the baseline plan among the scenario setting values ​​stored in the investment plan information DB of the information storage unit 15 and extracts the target equipment and planning period of the baseline plan. The data acquisition unit 12 extracts scenario setting values ​​corresponding to the investment plans other than the baseline plan whose target equipment and planning period match the extracted target equipment and planning period, and sets the investment plan corresponding to the extracted scenario setting values ​​as the other plan, i.e., the comparison plan. The data acquisition unit 12 reads data corresponding to the baseline plan and the comparison plan from the information storage unit 15. The data read here is data related to the information displayed on the display screen of this embodiment, specifically, includes information on the number of corresponding equipment and cost / risk information in the investment plan information DB. The data acquisition unit 12 outputs the read data to the variance calculation unit 13.

[0034] Fig. 4 is a diagram showing an example of the corresponding facility number information of this embodiment. In the example shown in Fig. 4, the corresponding facility number information indicates the damage level, risk impact level, and number (number of facilities) for each investment plan, i.e., for each plan ID, for each fiscal year. In other words, the corresponding facility number information shown in Fig. 4 is information that indicates the number of facilities / structures corresponding to each combination of the values ​​of the damage level and risk impact level for each fiscal year, for each plan ID.

[0035] Fig. 5 is a diagram showing an example of cost / risk information according to this embodiment. In the example shown in Fig. 5, the cost / risk information includes the costs and risks for each investment plan, i.e., for each plan ID, for each fiscal year.

[0036] Returning to the explanation of FIG. 2, the investment plan support system 1 calculates the cost difference between the other plan and the reference plan and the risk difference between the other plan and the reference plan (step S3). In detail, the variance calculation unit 13 calculates the cost difference between the other plan, i.e., the comparison plan, and the reference plan and the risk difference between the other plan and the reference plan, and outputs the calculation results to the display processing unit 14 along with the data received from the data acquisition unit 12. When there are multiple comparison plans, the variance calculation unit 13 calculates the above-mentioned variance for each comparison plan. Note that while an example in which variances are calculated with respect to risk and cost has been described here, variances may also be calculated with respect to other information, such as calculating the difference between the comparison plan and the reference plan with respect to the number of facilities and structures corresponding to each combination of values ​​of the damage degree and risk impact degree for each fiscal year.

[0037] The investment plan support system 1 generates display data for displaying a display screen including the scenario setting values ​​and risk assessment information, and the cost and risk differences between each of the other plans and the reference plan (step S4). In detail, the display processing unit 14 generates display data for displaying a display screen including the scenario setting values ​​and risk assessment information, and the cost and risk differences between each of the other plans and the reference plan. This display screen may further include, among the scenario setting values, information that is common between the reference plan and the compared plan, the damage level for each year of the compared plan, etc.

[0038] The investment plan support system 1 outputs the display data (step S5) and ends the process. In detail, in step S5, the display processing unit 14 outputs the generated display data to the display device 2.

[0039] Next, an example of a display screen displayed on the display device 2 will be described. FIG. 6 is a diagram showing an example of a display screen of this embodiment. The display screen shown in FIG. 6 includes a base plan area 200 on the right side where information about the base plan is displayed, and a compared plan area 300 where information about the compared plan is displayed. FIG. 6 shows an example where one compared plan is displayed, but as mentioned above, multiple compared plans may be displayed. The name areas 201, 301 display the names of the investment plans of the base plan and the compared plan.

[0040] In the example shown in Fig. 6, area 202 in base plan area 200 displays risk assessment information for the start year of the planning period, and area 203 in base plan area 200 displays risk assessment information for the end year of the planning period. The method for displaying risk assessment information will be described later. Area 204 displays information of the scenario setting values ​​that are common between the base plan and the comparison plan.

[0041] Area 302 in the comparison plan area 300 displays risk assessment information for the final year of the planning period. Note that, because the risk assessment information at the start of the planning period in the comparison plan is the same as the risk assessment information at the start of the planning period in the base plan, risk assessment information at the start of the planning period is not displayed in the comparison plan area 300. Area 303 in the comparison plan area 300 displays the differences between the comparison plan and the base plan in terms of risk and cost.

[0042] In the example shown in FIG. 6 , the risk difference is calculated by subtracting the total risk of the baseline plan from the total risk of the comparison plan, divided by the risk of the baseline plan, expressed as a percentage. The cost difference is calculated by subtracting the total cost of the baseline plan from the total cost of the comparison plan, divided by the cost of the baseline plan, expressed as a percentage. The numerical values ​​indicating the risk and cost difference are marked with an upward arrow to indicate an increase relative to the baseline plan if the comparison plan is larger than the baseline plan. If the comparison plan is smaller than the baseline plan, a downward arrow to indicate a decrease relative to the baseline plan. Furthermore, the arrows and numbers may be displayed in different colors depending on whether the plan is an increase or decrease. This allows users to visually grasp the increase or decrease. The method of expressing the increase or decrease is not limited to the example shown in FIG. 6 , and may be indicated by + and - signs or by letters such as increase or decrease.

[0043] Area 304 displays the degree of damage for each year of the comparison plan as an example of investment simulation information. In the example shown in FIG. 6, colors are assigned according to the degree of damage, and the overall length of the bar for each year in the bar graph represents the entire target equipment, and the vertical length of each color represents the number of equipment with the corresponding degree of damage. In other words, the overall length of the bar represents all equipment in the target equipment, i.e., 100%, and the vertical length of each color represents the proportion of equipment with the corresponding degree of damage. Note that in FIG. 6, different types of hatching represent different colors. The number of equipment corresponding to the degree of damage for each year of the comparison plan can be calculated from the information on the number of corresponding equipment.

[0044] 6, the items of the scenario setting values ​​(items to be displayed among the items of the scenario setting values) and the data (items and types of data) of the investment simulation information to be displayed in graph form in area 304 may be set by the user. In addition, the user may be able to set whether or not to display the investment simulation information in area 304.

[0045] Here, a method for displaying risk assessment information according to this embodiment will be described. In the example shown in FIG. 6, the risk assessment information is graphed with the horizontal axis representing the degree of damage (PoF) and the vertical axis representing the degree of risk impact (CoF), and is displayed by the size of a rectangle drawn in each colored cell (rectangular cell) corresponding to each combination of PoF and CoF values. In FIG. 6, different colors are indicated by different types of hatching. That is, in the example shown in FIG. 6, the risk assessment information is represented by a plurality of first figures arranged in a matrix corresponding to each combination of PoF and CoF values, and second figures arranged in the corresponding first figures and indicating the ratio corresponding to each combination of PoF and CoF values ​​indicated by the first figures. As shown in FIG. 6, the first figures are, for example, colored rectangles corresponding to each combination of PoF and CoF values. As shown in FIG. 6, the second figures are, for example, rectangles drawn in the cells.

[0046] FIG. 7 is a diagram illustrating a method for displaying risk assessment information according to this embodiment. In FIG. 7, risk assessment information is displayed in a manner similar to that of FIG. 6. In the example shown in FIG. 7, PoF is plotted on the horizontal axis and CoF is plotted on the vertical axis. Colored squares are displayed for each combination of PoF and CoF values. The square at the bottom left, where both PoF and CoF are lowest, and the squares above and to the right of that square are displayed in the same color. Moving to the right or upward from this state increases at least one of the risk and cost, and the square color also changes. In the example shown in FIG. 7, the squares are color-coded using four different colors. For example, if the ratio displayed as risk assessment information is a ratio based on the number of facilities, the figures 401 and 402 depicted in these squares become larger as the number of facilities corresponding to the squares increases. In this way, the display processing unit 14 determines the size of the second figures 401 and 402 according to the ratio corresponding to the second figure, and generates first display data for displaying a first display screen including the first figure and the second figure of the determined size.

[0047] As such, in the example shown in Fig. 7, the number of pieces of equipment for each combination of the values ​​of the degree of damage (PoF) and the degree of risk impact (CoF) is shown by the size of the figures 401 and 402. Note that in the example shown in Fig. 7, the figure showing the number of pieces of equipment is a rectangle, but this figure is not limited to a rectangle and may be a circle, and the shape of the figure is not limited to the example shown in Fig. 7. Also, although colors are not shown in Figs. 6 and 7, the figures showing the number of pieces of equipment, such as figures 401 and 402, may be shown in a color similar to that of the background squares but darker than the background.

[0048] The display processing unit 14 uses the information on the number of compatible facilities to determine the size of a rectangle to be displayed in the cell shown in Fig. 7 according to the number of facilities for each combination of PoF and CoF values, and generates a graph in which a rectangle of the determined size is displayed in the cell. The display processing unit 14 generates display data for generating the display screen shown in Fig. 6, which includes image data of the graph.

[0049] As described above, in this embodiment, display data is generated to display a display screen including the differences between the baseline plan and the comparison plan with respect to each of risk and cost, and risk assessment information for the baseline plan and the comparison plan. This allows the user to intuitively compare the baseline plan and the comparison plan, and allows for smooth investment planning decisions. Furthermore, by displaying the risk assessment information using the color of the squares and the size of the rectangles, as illustrated in FIGS. 6 and 7, the number of facilities for each combination of PoF and CoF values ​​is visually easy to understand. This allows the user to intuitively grasp the risk assessment information and smoothly compare the baseline plan with the comparison plan.

[0050] It should be noted that the method of displaying risk assessment information is not limited to the examples shown in Figures 6 and 7. Figure 8 is a diagram showing an example of another method of displaying risk assessment information according to this embodiment. In the example shown in Figure 8, the risk assessment information is shown in a table format. Instead of the risk assessment information displayed using boxes and square sizes as shown in Figure 6, the risk assessment information in the table format as shown in Figure 8 may be displayed. The method of displaying risk assessment information may be any method and is not limited to the above-mentioned examples.

[0051] Although FIG. 6 illustrates an example in which one comparison plan is displayed, as described above, multiple comparison plans may be used. FIG. 9 illustrates an example of a display screen according to this embodiment in the case where multiple comparison plans are used. In FIG. 9, for each of the multiple comparison plans, information corresponding to each plan is displayed in the comparison plan area 300 in the same manner as in the example illustrated in FIG. 6. However, in FIG. 9, each comparison plan area 300 includes only a name area 301 and an area 303 displaying the differences between the comparison plan and the baseline plan in terms of risk and cost, and other information is omitted. Furthermore, although not illustrated in FIG. 9, information regarding the baseline plan is also displayed in the same manner as in the example illustrated in FIG. 6.

[0052] When there are multiple plans to be compared, the user may be able to set the sort order of the plans, i.e., the order in which the plans are displayed. For example, although not shown in FIG. 9 , a pull-down menu may be displayed with a menu of sort orders, such as ascending order by risk, descending order by risk, ascending order by cost, descending order by cost, ascending order by the sum of risk and cost, and descending order by the sum of risk and cost, and the user may select the sort order by selecting from the pull-down menu. Note that the sort order is not limited to the above example. In this case, the user's selection is transmitted from the input receiving unit 11 to the display processing unit 14. The display processing unit 14 sorts the plans to be compared based on risk and cost in accordance with the user's selection, generates display data to display the plan area 300 corresponding to each plan to be compared in the sorted order, and outputs the generated display data to the display device 2.

[0053] 6, the information about the base plan and the information about the comparison plan are arranged side by side, i.e., horizontally, but this is not limiting, and the information about the base plan and the information about the comparison plan may be arranged top and bottom, i.e., vertically. Also, in the example shown in Fig. 6, risk assessment information for the start year and the final year of the plan year is displayed, but risk assessment information for years other than the start year and the final year may be displayed.

[0054] FIG. 10 is a diagram illustrating another example of a display screen according to the present embodiment. In the example illustrated in FIG. 10, information about the base plan and information about the comparison plan are arranged vertically. In the example illustrated in FIG. 10, the base plan area 200 displays, as in the example illustrated in FIG. 6, a name area 201 and an area 204 displaying information common to the base plan and the comparison plan among the scenario setting values. Furthermore, area 205 displays risk assessment information for not only the start and end years of the planning year but also intermediate years within the planning year. Similarly to the example illustrated in FIG. 6, the comparison plan area 300 displays, as in the example illustrated in FIG. 6, a name area 301 and an area 303 displaying differences between the comparison plan and the base plan in terms of risk and cost. Furthermore, area 305 displays risk assessment information for not only the start and end years of the planning year but also intermediate years within the planning year. Note that, in the example illustrated in FIG. 10, the damage level may also be displayed in the comparison plan area 300, as in the example illustrated in FIG. 6. The display screens illustrated in FIGS. 6 to 10 are merely illustrative, and the layout, display method, and content of the information displayed on the display screen are not limited to the above-described examples.

[0055] Next, the hardware configuration of the investment plan support system 1 of this embodiment will be described. In the investment plan support system 1 of this embodiment shown in FIG. 1, a computer program describing the processing in the investment plan support system 1 is executed on the computer system, causing the computer system to function as the investment plan support system 1. FIG. 11 is a diagram showing an example configuration of a computer system that realizes the investment plan support system 1 of this embodiment. As shown in FIG. 11, this computer system includes a control unit 101, an input unit 102, a memory unit 103, a display unit 104, a communication unit 105, and an output unit 106, which are connected via a system bus 107. The control unit 101 and the memory unit 103 form a processing circuit.

[0056] In FIG. 11 , the control unit 101 is a processor such as a CPU (Central Processing Unit) and executes a program describing the processes in the investment plan support system 1 of this embodiment. Note that a portion of the control unit 101 may be realized by dedicated hardware such as a GPU (Graphics Processing Unit) or an FPGA (Field-Programmable Gate Array). The input unit 102 is a button, keyboard, mouse, touchpad, etc. The storage unit 103 includes various types of memory such as RAM (Random Access Memory) and ROM (Read Only Memory) and a storage device such as a hard disk, and stores programs to be executed by the control unit 101, necessary data obtained during processing, etc. The storage unit 103 is also used as a temporary storage area for programs. The display unit 104 is, for example, a display such as an LCD (Liquid Crystal Display). Note that the display unit 104 and the input unit 102 may be integrated and realized by a touch panel, etc. The communication unit 105 is a receiver and transmitter that perform communication processing. The output unit 106 is a speaker or the like. Note that Fig. 11 is just an example, and the configuration of the computer system is not limited to the example of Fig. 11. For example, a computer system that realizes the investment plan support system 1 does not need to include the input unit 102, the display unit 104, and the output unit 106.

[0057] Here, an example of the operation of the computer system until the program of this embodiment is ready to be executed will be described. In the computer system having the above-mentioned configuration, for example, a computer program is installed in storage unit 103 from a CD-ROM or DVD-ROM inserted in a CD (Compact Disc)-ROM drive or DVD (Digital Versatile Disc)-ROM drive (not shown). Then, when the program is executed, the program read from storage unit 103 is stored in the main storage area of ​​storage unit 103. In this state, control unit 101 executes processing as investment plan support system 1 of this embodiment in accordance with the program stored in storage unit 103.

[0058] In the above explanation, a program describing the processing in the investment planning support system 1 is provided on a CD-ROM or DVD-ROM as a recording medium, but this is not limited to this, and depending on the configuration of the computer system, the capacity of the program to be provided, etc., it is also possible to use a program provided via a transmission medium such as the Internet.

[0059] The investment plan support program of this embodiment, for example, causes a computer system to execute the steps of calculating the differences between the comparison plan and the reference plan in terms of each of the risks and costs for each comparison plan using the risks and costs determined by investment simulations corresponding to each of the reference plan and the comparison plan, generating risk assessment information for each of the reference plan and the comparison plan, generating first display data for displaying a first display screen including the differences and the risk assessment information for each of the reference plan and the comparison plan, and outputting the first display data to a display device 2.

[0060] The data acquisition unit 12, the difference calculation unit 13, and the display processing unit 14 shown in FIG. 1 are realized by the control unit 101 shown in FIG. 11 executing a computer program stored in the storage unit 103 shown in FIG. 11. The storage unit 103 shown in FIG. 11 is also used to realize the data acquisition unit 12, the difference calculation unit 13, and the display processing unit 14. The input acceptance unit 11 shown in FIG. 1 is realized by at least one of the input unit 102 and the communication unit 105. The information storage unit 15 shown in FIG. 1 is part of the storage unit 103 shown in FIG. 11. The investment plan support system 1 may be realized by multiple computer systems. For example, the investment plan support system 1 may be realized by a cloud computer system. The display device 2 shown in FIG. 1 is, for example, a display. As described above, the display device 2 may be included in the investment plan support system 1. In this case, the display device 2 is realized by the display unit 104 shown in FIG. 11. As described above, the display device 2 may be a terminal device operable by a user. In this case, the terminal device is, for example, the computer system illustrated in FIG. 11.

[0061] As described above, in this embodiment, the investment plan support system 1 generates display data for displaying a display screen including the differences between the base plan and the comparison plan with respect to each of risk and cost, and risk assessment information for the base plan and the comparison plan, and outputs the display data to the display device 2. This allows the investment plan support system 1 to more appropriately support the user's judgment regarding the merits and demerits of multiple investment plans, compared to a case in which the above-mentioned differences and risk assessment information are not displayed.

[0062] Embodiment 2 Next, an investment plan support process in the investment plan support system 1 according to the second embodiment will be explained. The configuration of the investment plan support system 1 according to this embodiment is the same as that shown in Fig. 1. Below, differences from the first embodiment will be mainly explained.

[0063] In this embodiment, the investment plan support system 1 also generates first display data for displaying a first display screen including the differences between the base plan and the comparison plan regarding each of the risks and costs described in the first embodiment, and risk assessment information for the base plan and the comparison plan. In this embodiment, the investment plan support system 1 further generates display data (second display data) for displaying a second display screen including the results of an investment simulation for the selected plan, which is one investment plan selected by the user, and facility information, which is information about the facility selected by the user from among the facilities that make up the target facility. Note that the risk assessment information described in the first embodiment is also a graph of the corresponding facility number information in the investment simulation information, and is also the result of the investment simulation in a broad sense, but the results of the investment simulation displayed on the second display screen are information other than the risk assessment information.

[0064] Furthermore, the investment plan support system 1 further generates display data (third display data) for displaying a third display screen including the results of investment simulations for each of the display target plans, which are two or more investment plans selected by the user. The results of the investment simulations displayed on the third display screen are also information other than risk assessment information. Note that the third display screen may also display risk assessment information for two investment plans. Below, an example will be described in which the investment plan support system 1 generates display data for both the second and third display screens in addition to the first display screen, but this is not limiting, and display data for either the second or third display screen may be generated.

[0065] 12 is a flowchart showing the processing procedure for displaying the second display screen in the investment plan support system 1 of this embodiment. The investment plan support system 1 accepts the selection of a plan (step S11). In detail, the input accepting unit 11 accepts the selection of an investment plan from the user and outputs the accepted selection result to the data acquiring unit 12. Any method may be used to accept the selection from the user, but for example, a button for selecting a plan and displaying the second display screen, i.e., a button for screen transition, may be displayed on the first display screen described in the first embodiment, and the user may select a plan by pressing the button.

[0066] FIG. 13 is a diagram showing an example of buttons for screen transitions in this embodiment. In the example shown in FIG. 13, a comparison button 405 and a details button 406 are added to the display screen shown in FIG. 6 of the first embodiment. The details button 406 is a button for selecting a plan and displaying the second display screen, and the comparison button 405 is a button for selecting a plan and displaying the third display screen. FIG. 13 shows a case where there is one plan to be compared, but if there are multiple plans to be compared, the comparison button 405 and the details button 406 are displayed for each plan to be compared. The user selects a plan from the plans to be compared by pressing the details button 406 corresponding to the plan to be displayed on the second display screen. Note that the method of selecting a plan is not limited to this example. For example, a list of plans may be displayed, and the user may select a plan from the list.

[0067] Returning to the explanation of Figure 12, the investment plan support system 1 acquires data on the selected plan and data on the target equipment linked to the plan (step S12). In detail, the data acquisition unit 12 acquires data on the selected plan and data on the target equipment linked to the plan from the information storage unit 15, and outputs the acquired data to the display processing unit 14. The data on the selected plan includes investment simulation information corresponding to the selected plan. The data on the target equipment includes equipment information on the target equipment corresponding to the plan. Note that displaying a list of equipment that constitutes the target equipment is also an example of displaying equipment information.

[0068] The investment plan support system 1 generates display data for displaying a display screen including the risk assessment information and investment simulation information of the selected plan and a list of equipment that constitutes the target facility, and outputs the display data (step S13). In detail, the display processing unit 14 generates image data showing the risk assessment information graphed for the selected plan in the same manner as in embodiment 1, and generates image data showing each data in the investment simulation information, i.e., the results of the investment simulation, as a graph. The display screen including the risk assessment information and investment simulation information of the selected plan and a list of equipment that constitutes the target facility is an equipment selection screen that accepts selection of which equipment's equipment information to display on the second display screen.

[0069] The display processing unit 14 generates display data for displaying the facility selection screen and outputs the generated display data to the display device 2. For example, the investment simulation information may include the degree of damage, costs, and number of repair works for each fiscal year, and the display processing unit 14 uses the investment simulation information to generate an image that graphs the degree of damage, costs, and number of repair works. Note that, for example, the breakdown of costs may include the respective amounts for risk countermeasures, repairs, and fixed repairs. The investment simulation information may also include an annual budget. The number of repair works may also include, as a breakdown, the number of facilities (number of facilities / structures) and the number of fixed facilities (number of fixed facilities / structures) on which repair works are to be performed.

[0070] FIG. 14 is a diagram showing an example of an equipment selection screen according to this embodiment. In the example shown in FIG. 14, investment simulation information is displayed in a graph in area 500, and an equipment list is displayed in area 600. In the example shown in FIG. 14, similar to the first embodiment, the name of the plan is displayed in name area 501 in area 500, and risk assessment information is displayed in area 502. Furthermore, in the example shown in FIG. 14, a graph showing the damage level, cost (referred to as annual cost in the figure), and number of repair works (referred to as repair works in the figure) as investment simulation information is displayed in area 503, with the horizontal axis representing time (year). In the example shown in FIG. 14, the equipment list also displays a condition score for each piece of equipment. The numerical values ​​in parentheses shown as the condition score are, for example, the damage level and risk impact level for the final year of the planning period. In addition, the condition scores do not necessarily have to be displayed in the equipment list.

[0071] FIG. 15 is an enlarged view of the area 503 shown in FIG. 14 where the investment simulation information is displayed. In the example shown in FIG. 15, similar to the damage levels described in the first embodiment, the number of pieces of equipment corresponding to each damage level (the ratio to the total number of pieces of equipment) is indicated by the vertical length of the portion indicated in the corresponding color. Regarding costs, risk countermeasures, repairs, and fixed repairs are each indicated in a different color, and the graph is shown with time on the horizontal axis. The cost graph also displays the annual budget. The number of repair works is shown as a graph with time on the horizontal axis, showing the number of pieces of equipment (number of equipment and structures) and the number of fixed pieces of equipment (number of fixed equipment and structures) on which repair work is to be performed.

[0072] The numerical values ​​shown to the left of each graph indicate the total value for the planning period. For example, the damage level indicates the number of facilities for the final year of the planning period corresponding to each level, the costs indicate the respective amounts for the final year, and the number of repair works indicates the number of facilities for the final year. The numerical values ​​shown to the left of each graph are not limited to the final year, and for example, the user may be able to specify the year to be displayed. For example, by selecting the corresponding year in the graph, the numerical values ​​shown to the left of each graph may be changed to the numerical values ​​corresponding to the selected year.

[0073] Returning to the explanation of Figure 12, the investment plan support system 1 determines whether or not a selection has been accepted (step S14). With the equipment selection screen displayed, the user can select equipment from the equipment list and select an area on the graph. In detail, in step S14, when the input accepting unit 11 accepts any of the above selections from the user, it outputs information indicating the accepted selection result to the display processing unit 14. When the display processing unit 14 receives the selection result from the input accepting unit 11, it determines that the selection has been accepted.

[0074] If no selection has been received (step S14: No), the investment plan support system 1 repeats step S14. If a selection has been received (step S14: Yes), the investment plan support system 1 determines whether an area has been selected on the graph (step S15). In detail, the display processing unit 14 determines whether the selection result received from the input receiving unit 11 is the selection result of an area on the graph.

[0075] When an area is selected on the graph (Yes in step S15), the investment plan support system 1 generates display data for updating the displayed equipment list to an equipment list limited to the equipment corresponding to the selected area and displays the updated equipment list, and outputs the display data (step S16). In detail, the display processing unit 14 determines which area in which graph the selected area is, and based on the determination result, extracts equipment limited to the equipment corresponding to the area from the investment simulation information. Then, the display processing unit 14 generates display data for updating the displayed equipment list to an equipment list limited to the extracted equipment and displays the updated equipment list, and outputs the display data to the display device 2.

[0076] For example, suppose the investment simulation information includes the risk impact degree and damage degree for each facility for each fiscal year, and an area (portion) where the damage degree for fiscal year 2024 is 1 and the risk impact degree is 1 is selected in the graph of the risk assessment information. In this case, the display processing unit 14 extracts the facilities where the damage degree for fiscal year 2024 is 1 and the risk impact degree is 1 based on the investment simulation information, and generates display data for updating and displaying the displayed list of facilities to the list of extracted facilities. Furthermore, if an area corresponding to the damage degree for fiscal year 2025 is selected in the graph of the damage degree, the display processing unit 14 extracts the facilities where the damage degree for fiscal year 2025 is 1 based on the investment simulation information, and generates display data for updating and displaying the displayed list of facilities to the list of extracted facilities.

[0077] In this way, for example, the degree of damage is shown by a graph in which a figure of a predetermined size for each unit period shows the ratio of the number of pieces of equipment that make up the target facility corresponding to the value of the degree of damage to the total number of pieces of equipment that make up the target facility, based on the area of ​​the part that is shown in a color corresponding to the value of the degree of damage within the figure. With the investment simulation results displayed on the display device 2, the display processing unit 14 transmits to the display device 2 display data for displaying a part list that is a list of equipment that corresponds to the part selected by the user.

[0078] The investment plan support system 1 determines whether or not a facility has been selected (step S17). In detail, the display processing unit 14 determines whether or not the selection result received from the input receiving unit 11 is the selection result of a facility in the facility list.

[0079] If equipment is selected (Yes in step S17), the investment plan support system 1 generates display data for displaying equipment information about the selected equipment, outputs the display data (step S18), and repeats the process from step S14. In step S18, in detail, the display processing unit 14 generates display data for displaying equipment information about the selected equipment, and outputs the display data to the display device 2. That is, the display processing unit 14 generates second display data so that the second display screen includes equipment information corresponding to equipment selected by the user from an equipment list showing all equipment or a partial list. The second display screen includes investment simulation information, similar to the equipment selection screen. The display processing unit 14 may graph part of the equipment information and generate display data including a graphed image.

[0080] FIG. 16 is a diagram showing an example of a second display screen according to the present embodiment. In the example shown in FIG. 16, with the equipment selection screen shown in FIG. 14 displayed, equipment B is selected by selecting the selection area 601 in FIG. 16. In this case, display data for displaying equipment information is generated by the processing of step S18 and output to the display device 2, whereby the equipment information for equipment B is displayed in area 700. In the example shown in FIG. 16, the equipment information displayed includes graphed deterioration prediction information, the number of years since installation, the equipment lifespan, inspection results, and a list of child equipment and structure information, which is an example of related equipment information. Note that the number of years since installation may be calculated from the completion date in the equipment information or may be included in the equipment information. The displayed equipment information is not limited to the example shown in FIG. 16. The inspection results include, for example, the date and time (date and time of inspection), the inspection name, and a report card. In the report card column, the results may be displayed as numbers or characters, or a link (URL (Uniform Resource Locator)) to the data may be associated with a file name indicating the report card, so that the report card data can be displayed by clicking the file name. The items displayed as facility information on the second display screen and the data (items and types of data) of the investment simulation information displayed in graph form on the second display screen may be set by the user.

[0081] Returning to the description of Fig. 12, if the answer is No in step S15, the investment plan support system 1 proceeds to step S17. If the answer is No in step S17, the investment plan support system 1 repeats the process from step S14.

[0082] By the above-described processing, the second display screen including the investment simulation information and facility information is displayed on the display device 2. This allows the user to check detailed information about each facility while viewing the investment simulation information, and to determine in more detail whether or not an investment plan is necessary.

[0083] Next, the third display screen will be described. Fig. 17 is a flowchart showing the processing procedure for displaying the third display screen in the investment plan support system 1 of this embodiment. The investment plan support system 1 accepts the selection of plans to be compared (step S21). In detail, the input accepting unit 11 accepts the selection of plans to be compared and outputs the accepted selection result to the data acquiring unit 12.

[0084] For example, as described above, the user selects a plan and instructs transition to the third display screen by pressing the comparison button 405 illustrated in FIG. 13. Here, for example, the initial value of the comparison source, i.e., the plan that serves as the basis for comparison, is assumed to be the reference plan, and in step S21, selection of a plan to be compared with the reference plan (comparison target plan) is accepted. As will be described later, the comparison source plan and the comparison target plan can be changed. Note that the method of selecting the plans to be compared is not limited to this. For example, a list of plan names may be displayed, and two plans may be selected from the list display.

[0085] The investment plan support system 1 acquires data on the comparison source plan and the selected plan (step S22). Specifically, the data acquisition unit 12 reads out investment simulation information on the comparison source plan and the selected plan as data from the information storage unit 15 and outputs the read-out data to the variance calculation unit 13. The investment plan support system 1 calculates the cost difference between the comparison source plan and the selected plan and the risk difference between the comparison source plan and the selected plan (step S23). Specifically, the variance calculation unit 13 uses the data received from the data acquisition unit 12 to calculate the cost difference between the selected plan and the comparison source plan and the risk difference between the selected plan and the comparison source plan, and outputs the calculation results and the data received from the data acquisition unit 12 to the display processing unit 14. The method of calculating the cost and risk differences is the same as the method of calculating the cost and risk differences between the comparison target plan and the reference plan in the first embodiment.

[0086] The investment plan support system 1 generates display data for displaying a display screen including risk assessment information, investment simulation information, and differences in cost and risk for each of the comparison source plan and the selected plan, and outputs the display data (step S24). In detail, the display processing unit 14 graphs the risk assessment information and investment simulation information for each of the comparison source plan and the selected plan, similar to the graphed risk assessment information and investment simulation information displayed in area 500 on the second display screen.

[0087] The display processing unit 14 then generates display data for displaying a display screen including the graphed risk assessment information and investment simulation information, and the differences in cost and risk, and outputs the generated display data to the display device 2. As a result, the display device 2 displays a third display screen that is a display screen including the risk assessment information and investment simulation information, and the differences in cost and risk, for each of the comparison source plan and the selected plan. Note that at least a portion of the scenario setting values ​​for each of the comparison source plan and the selected plan may be displayed on the third display screen.

[0088] The investment plan support system 1 determines whether or not a selection of a time period has been accepted (step S25). For example, the user selects a time period by selecting an area horizontally in the investment simulation information displayed in a graph with time on the horizontal axis. When the input accepting unit 11 accepts the selection of an area from the user, the selection result is transmitted to the variance calculation unit 13 via the data acquisition unit 12. For example, if the investment simulation information is displayed in fiscal year units, the user selects the time period in fiscal year units. Note that the input accepting unit 11 may directly output the selection result to the variance calculation unit 13.

[0089] If the selection of a period has not been accepted (step S25: No), the investment plan support system 1 repeats step S25. If the selection of a period has been accepted (step S25: Yes), the investment plan support system 1 generates display data for displaying the difference (increase / decrease) between the investment simulation information for the selected period and the comparison source plan, outputs the display data (step S26), and repeats the process from step S25. Specifically, in step S26, the difference calculation unit 13 calculates the difference between the investment simulation information for the comparison target plan and the investment simulation information for the comparison source plan for the selected period for each item of the displayed investment simulation information, and outputs the calculation result to the display processing unit 14. For example, with regard to the damage degree in the investment simulation information, the difference is calculated by subtracting the number of facilities in the comparison target plan for the selected period from the number of facilities in the comparison source plan for the selected period for the number of facilities corresponding to each value of the damage degree. The display processing unit 14 generates display data for updating the third display screen to a display screen including the calculated difference (difference in investment simulation information) for each item of the investment simulation information, and outputs the generated display data to the display device 2.

[0090] In this way, the difference calculation unit 13 uses the results of investment simulations for the comparison source plan, which is one of the display target plans, and the display target plans other than the comparison source plan, to calculate, for each display target plan other than the comparison source plan, the difference in investment simulation results (difference in investment simulation information) between the display target plan and the comparison source plan. In the above example, the difference in investment simulation information corresponding to the selected period was calculated, but this is not limiting, and the difference in investment simulation information for the entire planning period may be calculated without selecting a period.

[0091] 18 is a diagram showing an example of the third display screen of this embodiment. In the example shown in FIG. 18, information about the comparison source plan is displayed in area 800, and information about the comparison target plan is displayed in area 900. Name area 801 in area 800 and name area 901 in area 900 display the names of the corresponding plans, respectively, but other plans are displayed as pull-down menus, making it possible to change the plans displayed in area 800 and area 900. If the user changes at least one of the comparison source plan and the comparison target plan, the processing from step S22 is performed again based on the change instruction.

[0092] Areas 802 and 902 display the risk assessment information of the corresponding plan in a graph, similar to the second display screen. Areas 803 and 903 display the investment simulation information of the corresponding plan in a graph, similar to the second display screen. Selection area 804 indicates the region selected by the user as the time period, and in the example shown in FIG. 18, fiscal year 2029 is selected as the time period. Note that the numerical values ​​displayed to the left of the graphed investment simulation information are the same as the numerical values ​​displayed in area 503 in FIGS. 14 and 15, but here, the numerical values ​​corresponding to the selected time period are displayed. Area 904 displays the differences in the investment simulation information for each item. Area 905 displays the differences in risk and cost (the difference between the comparison target plan and the comparison source plan) in a format similar to that of the first embodiment.

[0093] FIG. 19 is an enlarged view of the area 904 shown in FIG. 18 , which displays the differences in the investment simulation information. As shown in FIG. 19 , the area 904 displays the differences between the comparison plan and the comparison source plan, broken down by breakdown, for each of the items: damage level, annual cost, and repair work. In the example shown in FIG. 19 , if the value of the comparison plan is larger than that of the comparison source plan, i.e., an increase, an upward arrow is added to the numerical value. If the value of the comparison plan is smaller than that of the comparison source plan, i.e., a decrease, a downward arrow is added to the numerical value. Furthermore, the colors of the numerical values ​​may be different depending on whether the value increases or decreases. By adding arrows and changing the colors in this way, the user can more intuitively grasp the differences. The data (data items and types) and scenario setting value items of the investment simulation information displayed on the third display screen may be user-configurable.

[0094] In the above example, two pieces of investment simulation information, the original plan and the comparison plan, were displayed on the third display screen, but this is not limited to this. The user may select two or more plans as comparison plans, and three or more pieces of investment simulation information may be similarly displayed on the third display screen.

[0095] As described above, in this embodiment, the investment plan support system 1 performs the same operations as in the first embodiment, and also generates at least one of display data for generating a second display screen including investment simulation information and facility information, and display data for displaying a third display screen that displays investment simulation information for multiple investment plans. This provides the same effects as in the first embodiment, and allows the user to compare investment plans in more detail.

[0096] The configurations shown in the above embodiments are merely examples, and may be combined with other known technologies, or different embodiments may be combined with each other. It is also possible to omit or modify parts of the configurations as long as they do not deviate from the gist of the invention.

[0097] Various aspects of the present disclosure are summarized below as appendices.

[0098] (Appendix 1) a difference calculation unit that calculates, for each of the comparison plans, differences between the comparison plan and the reference plan in terms of the risks and the costs, using risks and costs obtained by investment simulations corresponding to a base plan, which is one of a plurality of investment plans for a target facility, and a comparison plan, which is one or more of the investment plans other than the base plan; a display processing unit that generates risk assessment information indicating a ratio within the target facility corresponding to a combination of values ​​of the damage degree and the risk impact degree obtained by the investment simulation for each of the base plan and the comparison plan, generates first display data for displaying a first display screen including the difference and the risk assessment information for each of the base plan and the comparison plan, and outputs the first display data to a display device; An investment planning support system comprising: (Appendix 2) The target facility is composed of a plurality of facilities, The investment planning support system described in Appendix 1, characterized in that the ratio is a ratio according to the number of facilities corresponding to the combination of values ​​of the damage degree and the risk impact degree. (Appendix 3) The investment planning support system described in Appendix 1, characterized in that the ratio is a ratio of area or length in the target equipment. (Appendix 4) On the first display screen, the risk assessment information is displayed by a plurality of first figures arranged in a matrix, each corresponding to a combination of the values ​​of the damage degree and the risk influence degree, and a second figure arranged within a corresponding first figure and indicating the ratio corresponding to the combination indicated by the corresponding first figure, The investment planning support system described in any one of Appendices 1 to 3, characterized in that the display processing unit determines the size of the second figure according to the ratio corresponding to the second figure, and generates the first display data for displaying the first display screen including the first figure and the second figure of the determined size. (Appendix 5) The investment planning support system described in any one of Appendices 1 to 4, characterized in that the display processing unit generates second display data for displaying a second display screen including the results of the investment simulation of the selected plan, which is one of the investment plans selected by the user, and equipment information, which is information about the equipment selected by the user from among the equipment that constitutes the target equipment, and outputs the second display data to a display device. (Appendix 6) The investment planning support system described in Appendix 5, characterized in that the results of the investment simulation are displayed as a graph on the second display screen. (Appendix 7) The results of the investment simulation include the degree of damage for each unit period, the graph showing the degree of damage is a graph showing the ratio of the number of pieces of equipment corresponding to the value of the degree of damage among pieces of equipment constituting the target equipment to the total number of pieces of equipment constituting the target equipment, by the area of ​​a part of the figure of a predetermined size for each unit period that is indicated in a color corresponding to the value of the degree of damage within the figure, The investment planning support system described in Appendix 6 is characterized in that the display processing unit sends display data to the display device for displaying the results of the investment simulation, and while the results of the investment simulation are displayed on the display device, sends display data to the display device for displaying a part list that is a list of the equipment corresponding to the part selected by the user, and generates the second display data so that the equipment information corresponding to the equipment selected by the user from the part list is included on the second display screen. (Appendix 8) The investment planning support system described in any one of Appendices 1 to 7, characterized in that the display processing unit generates third display data for displaying a third display screen including the results of the investment simulation for each of the two or more investment plans selected by the user, which are the display target plans, and outputs the third display data to a display device. (Appendix 9) the difference calculation unit uses the results of the investment simulation between a comparison source plan, which is one of the display target plans, and the display target plans other than the comparison source plan to calculate, for each of the display target plans other than the comparison source plan, the difference between the results of the investment simulation between the display target plan and the comparison source plan; The investment planning support system described in Appendix 8, characterized in that the display processing unit generates the third display data so that the difference in the results of the investment simulation is included in the third display screen. (Appendix 10) An investment planning support method in an investment planning support system, comprising: a step of calculating, for each of the comparison plans, differences between the comparison plan and the reference plan with respect to each of the risks and the costs, using risks and costs obtained by investment simulations corresponding to a base plan, which is one of a plurality of investment plans for a target facility, and a comparison plan, which is one or more of the investment plans other than the base plan; generating risk assessment information indicating a ratio within the target facility corresponding to a combination of values ​​of the damage degree and the risk impact degree obtained by the investment simulation for each of the base plan and the comparison plan, generating first display data for displaying a first display screen including the difference and the risk assessment information for each of the base plan and the comparison plan, and outputting the first display data to a display device; An investment planning support method comprising: (Appendix 11) a step of calculating, for each of the comparison plans, differences between the comparison plan and the reference plan with respect to each of the risks and the costs, using risks and costs obtained by investment simulations corresponding to a base plan, which is one of a plurality of investment plans for a target facility, and a comparison plan, which is one or more of the investment plans other than the base plan; generating risk assessment information indicating a ratio within the target facility corresponding to a combination of values ​​of the damage degree and the risk impact degree obtained by the investment simulation for each of the base plan and the comparison plan, generating first display data for displaying a first display screen including the difference and the risk assessment information for each of the base plan and the comparison plan, and outputting the first display data to a display device; An investment planning support program characterized by causing a computer system to execute the above. [Explanation of symbols]

[0099] 1 Investment planning support system, 2 Display device, 11 Input reception unit, 12 Data acquisition unit, 13 Difference calculation unit, 14 Display processing unit, 15 Information storage unit

Claims

1. a difference calculation unit that calculates, for each of the comparison plans, a difference between the comparison plan and the reference plan in terms of each of the risks and the costs, using risks and costs obtained by investment simulations corresponding to a base plan, which is one of a plurality of investment plans for a target facility, and a comparison plan, which is one or more of the investment plans other than the base plan; a display processing unit that generates risk assessment information indicating a ratio within the target facility corresponding to a combination of values ​​of the damage degree and the risk impact degree obtained by the investment simulation for each of the base plan and the comparison plan, generates first display data for displaying a first display screen including the difference and the risk assessment information for each of the base plan and the comparison plan, and outputs the first display data to a display device; An investment planning support system comprising:

2. The target facility is composed of a plurality of facilities, 2. The investment planning support system according to claim 1, wherein the ratio is a ratio according to the number of pieces of equipment corresponding to a combination of the values ​​of the damage degree and the risk influence degree.

3. 2. The investment planning support system according to claim 1, wherein the ratio is a ratio of an area or a length of the target facility.

4. On the first display screen, the risk assessment information is displayed by a plurality of first figures arranged in a matrix, each corresponding to a combination of the values ​​of the damage degree and the risk influence degree, and a second figure arranged within a corresponding first figure and indicating the ratio corresponding to the combination indicated by the corresponding first figure, The investment planning support system of claim 1, characterized in that the display processing unit determines the size of the second figure according to the ratio corresponding to the second figure, and generates the first display data for displaying the first display screen including the first figure and the second figure of the determined size.

5. The investment planning support system described in any one of claims 1 to 4, characterized in that the display processing unit generates second display data for displaying a second display screen including the results of the investment simulation of the selected plan, which is one of the investment plans selected by the user, and equipment information, which is information about the equipment selected by the user from among the equipment that constitutes the target equipment, and outputs the second display data to a display device.

6. 6. The investment planning support system according to claim 5, wherein the results of the investment simulation are displayed as a graph on the second display screen.

7. The results of the investment simulation include the degree of damage for each unit period, the graph showing the degree of damage is a graph showing the ratio of the number of pieces of equipment corresponding to the value of the degree of damage among pieces of equipment constituting the target equipment to the total number of pieces of equipment constituting the target equipment, by the area of ​​a part of the figure of a predetermined size for each unit period that is indicated in a color corresponding to the value of the degree of damage within the figure, The investment planning support system of claim 6, characterized in that the display processing unit transmits display data to the display device for displaying the results of the investment simulation, and while the results of the investment simulation are displayed on the display device, transmits display data to the display device for displaying a part list which is a list of the equipment corresponding to the part selected by the user, and generates the second display data so that the equipment information corresponding to the equipment selected by the user from the part list is included on the second display screen.

8. The investment planning support system described in any one of claims 1 to 4, characterized in that the display processing unit generates third display data for displaying a third display screen including the results of the investment simulation for each of the display target plans, which are two or more of the investment plans selected by the user, and outputs the third display data to a display device.

9. the difference calculation unit uses the results of the investment simulation between a comparison source plan, which is one of the display target plans, and the display target plans other than the comparison source plan to calculate, for each of the display target plans other than the comparison source plan, the difference between the results of the investment simulation between the display target plan and the comparison source plan; 9. The investment planning support system according to claim 8, wherein the display processing unit generates the third display data so that the difference in the results of the investment simulation is included in the third display screen.

10. An investment planning support method in an investment planning support system, comprising: a step of calculating, for each of the comparison plans, differences between the comparison plan and the reference plan with respect to each of the risks and the costs, using risks and costs obtained by investment simulations corresponding to a base plan, which is one of a plurality of investment plans for a target facility, and a comparison plan, which is one or more of the investment plans other than the base plan; generating risk assessment information indicating a ratio within the target facility corresponding to a combination of values ​​of the damage degree and the risk impact degree obtained by the investment simulation for each of the base plan and the comparison plan, generating first display data for displaying a first display screen including the difference and the risk assessment information for each of the base plan and the comparison plan, and outputting the first display data to a display device; An investment planning support method comprising:

11. a step of calculating, for each of the comparison plans, differences between the comparison plan and the reference plan with respect to each of the risks and the costs, using risks and costs obtained by investment simulations corresponding to a base plan, which is one of a plurality of investment plans for a target facility, and a comparison plan, which is one or more of the investment plans other than the base plan; generating risk assessment information indicating a ratio within the target facility corresponding to a combination of values ​​of the damage degree and the risk impact degree obtained by the investment simulation for each of the base plan and the comparison plan, generating first display data for displaying a first display screen including the difference and the risk assessment information for each of the base plan and the comparison plan, and outputting the first display data to a display device; An investment planning support program characterized by causing a computer system to execute the above.

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