8. The method of claim 7 , wherein extracting the generic attribute features including the click feature comprises: determining whether the current query data is present in the click log, wherein the click log is adapted to store a correspondence relationship between the query data and the click feature; in the event that the current query data is present in the click log, acquiring a first predetermined number of clicked categories corresponding to the current query data from the preset click log, wherein the clicked categories are categories to which a corresponding product clicked by a user after searching for the query data belongs; and in the event that the current query data is not present in the click log, inquiring in the click log about clicked query data closest to the current query data, wherein the clicked query data is at the shortest edit distance in the click log from the current query data, and acquiring the first predetermined number of categories corresponding to the clicked query data as the click feature.
7. The method of claim 1 , wherein the generic attribute features comprise a click feature that corresponds to a clicked category corresponding to the current query data in a click log.