| 摘要 |
PROBLEM TO BE SOLVED: To provide a content retrieval technology for presenting a content desired by a user without omission. SOLUTION: For automatically obtaining relevance between contents based on a history of browsing the content by a user to display a list of the retrieval result obtained by retrieving content satisfying a retrieval condition input from the user, on the basis of the relevance, it is determined whether or not there is content having relevance to the retrieved content though not satisfying the retrieval condition, and if there is content having the relevance, the content is also displayed in a list. Thereby, content desired by the user can be displayed without omission. COPYRIGHT: (C)2007,JPO&INPIT
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