| 摘要 |
PROBLEM TO BE SOLVED: To efficiently derive a condition for minimizing a decrease in an information amount and abstracting information.SOLUTION: An information processing method includes retrieval processing for retrieving a minimal origin satisfying anonymity based on a prescribed condition in a first bundle defined on the basis of an order relation for abstracting classifications more with a combination of a plurality of classifications for dividing attribute values which can be taken by a plurality of object attributes as a first origin, and reference point derivation processing for deriving a new reference point on the basis of a minimal traverse of a complementary set of second origins corresponding to the retrieved minimal origin in a second bundle in which an inclusion relation of the second origins is defined as an order relation with each subset of a finite set defined on the basis of the number of divisions in each object attribute as the second origin, executes retrieval processing based on the new reference point and reference point derivation processing based on a result of the retrieval processing until a new reference point is not derived any more, and outputs a combination of divisions indicated by each of a series of retrieved minimal origins.SELECTED DRAWING: Figure 1 |
