| 摘要 |
PROBLEM TO BE SOLVED: To correctly determine a searching session, even when searching is repeatedly performed. SOLUTION: In an information presentation device, a first content set storing means holds a content set searched with a specified search query. A content set synthetic means synthesizes a content set using two or more content sets by at least one searched with two or more past search queries by at least one. The second content set storing means holds the content set generated by the content set synthetic means. A searching session judgment means compares the content set of the first content set storing means and the content set of the second content set storing means, and judges whether the specified search query belongs to a past searching session. COPYRIGHT: (C)2009,JPO&INPIT |
