INFORMATION RETRIEVAL DEVICE

摘要

A keyword extracting means (103) extracts a keyword from text information corresponding to one of indicated buttons selected by a user and registers it at a selection history memory (104). Further, the keyword extracting means extracts keywords from displayed text information and registers one of the extracted keywords selected by a user and registers it at the selection history memory (104). A keyword set providing means (105) combines the registered keywords to make out a plurality of keyword sets and provide them to users.