Abstract:

No matter how much complicated Chinese query sentences may be, they are always made up of query targets and query conditions. The structure of a querysentence is determined by the query conditions. The query conditions can be parallel or nested. The order of query conditions are also not fixed. The s emantic information extraction of the query conditions are studied based on information extraction in this paper. The rules of extraction are made and s  erveral algorithms are presented. The query conditions and Sub-SQL are integrated into the algorithms. The exprements show that these algorithms can ext ract effectively the semantic information of query conditions. They are worth of further research.

Key words: （Chinese query, query condition, semantieme, information extraction）