06-10-2010 дата публикации
Номер: CN0101853298A
Принадлежит:
The invention discloses an event-oriented query expansion method, which comprises the following steps of: (1) inputting a query content and acquiring a local text set N; (2) identifying from the set N to acquire an event set E; (3) distinguishing an event item Qe and a limiting item Qe' respectively from query items; (4) calculating the association intensity of the event item Qe of the query items with each event in the set E, and selecting a plurality of events with high association intensity from the set E and adding the events into the Qe for expanding to acquire the expanded event item; and (5) calculating the similarity of the expanded event item and one text d in a set M, calculating the similarity Sim (Qe', d) of the limiting item Qe' and the text d in the set M, calculating to acquire the similarity Sim (Qexp, d) of the Qexp and the text d in the set M, and outputting retrieve texts according to the descending sort of the Sim (Qexp, d). In the method, the event item and the limiting ...
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