Query Reformulation Based on Improved Pseudo Feedback

Now the difficulty of information query on the Web is there is not matching between short, misty user query and the document of existing a great deal of redundancy and noise. Anew query method was brought forward based on first item clicked feedback under the analyzed excellent and disadvantage of relevance feedback and pseudo feedback.Present a measure of first item-clicked feedback. The experiment adopted testing data of TREC Web Track show it can increase query efficiency in the information query, conquer the disadvantage of relevance feedback and pseudo feedback.