SIMILARITY CALCULATION DEVICE, SIMILARITY CALCULATION METHOD, SIMILARITY CALCULATION PROGRAM, AND INFORMATION PROCESSOR

摘要

PROBLEM TO BE SOLVED: To provide a similarity calculation device or the like calculating similarity at high speed even when the number of pieces of data increases.SOLUTION: A similarity calculation device 101 has: a characteristic amount calculation part 102 calculating a characteristic amount characterizing data according to a prescribed characteristic amount calculation procedure; a range evaluation part 103 calculating an overlapping degree representing similarity related to the characteristic amount according to a prescribed degree calculation procedure on the basis of a first characteristic amount that is the characteristic amount calculated by the characteristic amount calculation part 102 about data included in teacher data and a second characteristic amount that is the characteristic amount calculated by the characteristic amount calculation part 102 about target data; a selection part 104 selecting specific data from the teacher data according to the overlapping degree; and a similarity calculation part 105 calculating similarity between the specific data and the target data.