| 摘要 |
PROBLEM TO BE SOLVED: To retrieve a data object based on a relation on which the taste of a user are directly reflected. SOLUTION: A retrieval object in an object layer 120 is associated by one or more relations (profile node 140) defined between respective objects in a relational layer 122. Furthermore, a profile node 140 is included in an attribute layer 124, and associated by attributes on which the tastes of a user are reflected. Furthermore, the attributes are grouped into attribute sub-groups 126. Thus, it is possible to enable each user to prepare a profile for the retrieval object, and to attain retrieval on which the taste of the user are directly reflected. COPYRIGHT: (C)2006,JPO&NCIPI
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