Yiming Lu, Jian Hu, Fanyuan Ma

[摘要] This is the first year our lab to participate in Trec. We participate in MixedQuery task for theWeb track. All the runs we submitted are based on the modified Okapi weighting scheme. Besides,we used several heuristics as the rerank method: sitemerging, minimal span weight, and etc.Also, the PageRank of a document is combined with the similarity of the document with thequery to obtain an overall ranking of documents.Especially for the mixedquery task, we try a simple classification method to estimate

[学科分类] 社会科学、人文和艺术（综合）