PROBLEM TO BE SOLVED: To continuously evaluate an action between communities by an objective and quantitative index. From the activity information data 11, the history data 12 to 15, and the communication history data 16, the specific activity of the first community is reflected in the communication in the network community, and the communication in the network community becomes the activity of the second community. The magnitude and delay of the connection between the specific activity of the first community and the communication in the network community in the impact model, and the network community, and the impact model building unit 21 and 22 that build the impact model 50 showing the reflected process. It has an impact model evaluation unit 23 that calculates the evaluation value of the process based on the magnitude and delay of the connection between the communication in the second community and the activity of the second community. [Selection diagram] FIG. 4
展开▼