Research on the Chinese text retrieval method using context

A new method to expand query words based on the context is proposed in this paper, which aims at the problem that the retrieval effect will be affected if request words used in the text retrieval can not match text words. This method does words expansion based on the context information of the query word. Additionally, the position information between the query word and the whole query sentence or the query word is considered. Experimental results show that this method greatly improves the average precision ratio.