| 摘要 |
PROBLEM TO BE SOLVED: To provide a document retrieving device for extracting a keyword from a conversation, and for retrieving a document from the keyword, and for displaying the retrieval result, and for providing it to a user so that a user easily confirm the retrieval result. SOLUTION: This document retrieval device is provided with a title presenting and updating means for displaying a undisplayed document title from among retrieval results retrieved once even when any keyword is not extracted from a conversation, and configured to update the title display even when any keyword is not extracted. Thus, it is possible for a user to efficiently reach a target document by increasing the amounts of document information to be provided to the user. COPYRIGHT: (C)2008,JPO&INPIT
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