10. The apparatus as recited in claim 9 , wherein the obtaining unit comprises: a second segmenting module that segments the published information to obtain one or more words; and a third obtaining module that obtains a category click rate of a string formed by the one or more words after the segment of the published information from historical statistics information of category click rates.
9. An apparatus comprises: one or more processors; and computer storage media having stored thereon computer-executable components that are executable by the one or more processors, the one or more computer-executable components comprising: an obtaining unit that obtains a category click rate of a query and a category click rate of published information; a calculation unit that calculates a similarity degree between the category click rate of the query and the category click rate of the published information; and a transmission unit that transmits the published information as a successful matching result if the calculated similarity degree is above a first threshold; wherein the obtaining unit comprises: a first segmenting module that segments the query to obtain one or more words; a first obtaining module that obtains a category click rate of the one or more words after the segment from historical statistics information of category click rates, the category click rate of the one or more words after the segment being a category click rate of a string formed by the one or more words after the segment for a corresponding category; a revising module that determines a word in the one or more words after the segment as a present word; if a difference between a category click rate of a string formed by the one or more words after the segment except for the present word and a category click rate of another string formed by the one or more words after the segment reaches a second threshold, determining the present word as a core word; or if a difference between a category click rate of a string formed by the one or more words after the segment except for the present word and a category click rate of another string formed by the one or more words after the segment does not reach the second threshold, determining the present word as a non-core word; and a second obtaining module that obtains a category click rate of a string formed by the one or more core words for the corresponding category as the category click rate of the query.