MODIFIED REGION EXTRACTION SYSTEM, MODIFIED REGION EXTRACTION METHOD, AND MODIFIED REGION EXTRACTION PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a modified region extraction system and such capable of identifying a modified region.SOLUTION: A modified region extraction system 101 includes: a modification information generation part 102 for generating modification information representing presence/absence of modification concerning combination information on the basis of a hash value calculated with respect to a combination information representing a combination concerning element information representing an element contained in target information 201; and a region identification part 103 for identifying a modified region 202 at target information on the basis of the modification information.SELECTED DRAWING: Figure 1