Data Analyzing Device And Data Analyzing Method

A data analyzing device for analyzing analysis target data, the data analyzing device comprising:

• a data input unit which receives an input of analysis target data including a plurality of features and an objective variable;
• a prediction model generating unit which generates a prediction model for predicting the objective variable from the plurality of features;
• an importance degree calculating unit which calculates a degree of importance of each of the plurality of features relative to prediction using the prediction model;
• a display unit which displays features having higher degrees of importance on a basis of the degrees of importance calculated by the importance degree calculating unit;
• a basic diagram generating unit which generates a basic diagram that shows a relationship between a first feature and the objective variable, the first feature being selected in accordance with an input of a user from among the features displayed on the display unit;
• and
• a derived diagram generating unit which generates at least one of a first derived diagram, a second derived diagram, and a third derived diagram,
• the first derived diagram showing a relationship between a second feature and the objective variable, the second feature being selected as follows:
• the analysis target data is divided into a plurality of clusters on a basis of values of the first feature, a representative value of the objective variable of each of the clusters is calculated, and a second feature having a representative value of the objective variable, which is determined as having a significant difference relative to the representative value of the objective variable of the first feature, is extracted from at least one of the clusters,
• the second derived diagram showing a feature that contributes to prediction of the objective variable in a predetermined cluster among the plurality of clusters, and
• the third derived diagram showing a comparison of accuracy between a prediction model generated based on the first feature and a prediction model generated based on another feature belonging in the same category as the first feature and having an accumulation period different from that of the first feature;
• wherein the display unit is configured to display the basic diagram generated by the basic diagram generating unit and the derived diagram generated by the derived diagram generating unit.