| 摘要 |
PROBLEM TO BE SOLVED: To generate clusters again in accordance with states of contents being collected. SOLUTION: A content display device includes an attribute extraction means 101, a database registration means 102, a cluster generation means 103, a cluster update condition check means 104, and a database means 105, and the necessity of updating clusters is automatically detected, and a cluster generation condition is set so as to meet a condition, and the content display device is kept in a state suitable for viewing. COPYRIGHT: (C)2007,JPO&INPIT
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