| 摘要 |
PROBLEM TO BE SOLVED: To provide a data analyzer capable of analyzing characteristics of entire population which includes characteristics of a population each individual of which is unidentifiable.SOLUTION: An attribute ratio information calculation section 38 calculates an attribute ratio matrix P having an element pwhich represents the ratio based on a user attribute matrix V and an attribute population vector W. A features matrix estimation section 40 and a repetitive determination section 42 repeat to estimate a user features matrix A, a commodity features matrix B and an attribute feature matrix C under a linear restriction that the attribute features matrix C which is represented by an attribute ratio matrix P, a user attribute matrix V and a user features matrix A based on a user commodity matrix X, an attribute commodity matrix Y, the user features matrix A, the commodity features matrix B and the attribute features matrix C.SELECTED DRAWING: Figure 5 |
