| 摘要 |
In an information retrieval method and apparatus, a specific user model is formed for a specific user based at least upon the specific user's own selection data. A plurality of specific user models formed for respective users are registered, and a group user model is formed on the basis of the plurality of specific user models. Information is subsequently retrieved based on the group user model. The group user model may be formed by selecting a maximum, minimum or average value of the plurality of specific user models.
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