Patent ID: 9087108
Filing Date: 2015-07-21
Classification: G06F,G06Q

Abstract:
1. A method comprising: receiving a plurality of search key word sets that were previously input by a plurality of users; obtaining category information corresponding to the plurality of search key word sets, the category information being determined based at least in part on the plurality of users' selections; segmenting each of the plurality of search key word sets into a plurality of search key word units; determining a plurality of importance levels of the search key word units based at least in part on determining category entropy for each of the plurality of search key word units, wherein the category entropy is determined based at least in part on a unique visitor (UV) quantity for a search key word unit in a particular category and a UV quantity for the search key word unit in all categories; combining the search key word units into a plurality of search key word unit groups that correspond to a plurality of stages, each stage including one or more key word unit groups having the same number of search key word units, and one stage having a different number of search key word units as another stage; based at least in part on the category information corresponding to the plurality of search key word sets and the plurality of importance levels for the search key word units, determining category information that specifically corresponds to the plurality of search key word unit groups; based at least in part on category information specifically corresponding to the plurality of search key word unit groups, establishing a plurality of search key word tables corresponding to the plurality of stages, each stage having a corresponding search key word table that comprises the correspondence between the search key word unit groups for said each stage and the category information that specifically corresponds to the plurality of search key word unit groups; receiving a current search key word set; segmenting the current search key word set into current search key word units; combining the current search key word units into a plurality of current search key word unit groups that correspond to a plurality of current stages, each current stage corresponding to a set of current search key word unit groups, each current search key word unit group in the set having the same number of current search key word units; and using the plurality of search key word tables to identify the current category information that corresponds to the plurality of current search key word unit groups; wherein: the plurality of search key word tables are used to provide current category information of the current search key word set input by a user.