User Profile-based Local Context Analysis
基于用户兴趣的局部上下文分析方法*

Since the precision and recall of Web information retrieval systems was very low now,a new method for automatic query expansion to improve the performance of retrieval was presented.By mining the user profile in client computer,then combining user profile and traditional LCA,the method could resolve the defect of LCA.Experimental results showed that this technique can improve the precision and recall of Web information retrieval markedly compared with conventional ones.