SYSTEM, METHOD, PROGRAM FOR INFORMATION RETRIEVAL, RECORDING MEDIUM WITH INFORMATION RETRIEVAL PROGRAM RECORDED THEREON, DEVICE, METHOD, PROGRAM FOR SELECTING OUTPUT INFORMATION AND RECORDING MEDIUM WITH OUTPUT INFORMATION SELECTION PROGRAM RECORDED THEREON

摘要

PROBLEM TO BE SOLVED: To provide technique by which browse of information to be required by a user is performed from a similarity retrieval result without waste to the utmost. SOLUTION: The information desired by the user is predicted and precedently presented by sequentially repeating procedures to extract a group of pieces of information with similarity of feature vectors higher than a threshold to a query, to present the contents of information having the feature vector with the highest similarity among them, when the user determines that the information as YES, to present information having high similarity with the feature vector of the information next, on the contrary, when the user determines that the information as NO, to use a virtual vector in the opposite direction to the feature vector afterward.