DATA GENERATION METHOD, DEVICE AND PROGRAM, RETRIEVAL PROCESSING METHOD, AND DEVICE AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To enable a plurality of data blocks, each block including one tag or a plurality of tags to be efficiently retrieved.SOLUTION: A method includes: first processing for extracting one tag or a plurality of tags included in each of a plurality of data blocks from the plurality of data blocks to be stored, and for generating a bit string with bit positions corresponding to kinds of the tags set to ON; second processing for classifying a plurality of bit strings generated for the plurality of data blocks into a plurality of groups on the basis of coincident or partly identical bit strings; and third processing for storing data of the data blocks corresponding to the bit strings belonging to a group for each group of the plurality of groups in association with the kinds of bit strings belonging to the group, in a data storage part.SELECTED DRAWING: Figure 1