INFORMATION SEARCH SYSTEM, INFORMATION SEARCH DEVICE, INFORMATION SEARCH METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide an information search system that can provide a user with keywords (character strings) allowing the user to acquire unknown latest topics.SOLUTION: An information search system 100 includes sentence information acquisition means for acquiring pieces of sentence information from text data collected through search based on a keyword, character string selection means for selecting one or more character strings satisfying predetermined conditions from each of the pieces of sentence information and storing the selected character strings in character string storage means for each of the corresponding sentence information, and information output means for outputting information for displaying, to a user, the selected character strings for each of the corresponding sentence information.