DATA RETRIEVAL DEVICE, DATA RETRIEVAL METHOD, AND DATA RETRIEVAL PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a data retrieval device, a data retrieval method, and a data retrieval program which are capable of reducing a distance calculation cost required for retrieving a pair of pieces of similar partial time-series data from time-series data of a plurality of series that has flowed in within a predetermined time from the past to the present.SOLUTION: An algorithm is employed which has a data structure easy for insertion of partial time-series data at a new receipt time and deletion of partial time-series data at an old receipt time, and discriminates the partial time-series data by the receipt time to prunes them.