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We participate in document search and expert search of Enterprise Track in TREC2008. The corpus and tasks are same as the year before. Different from TREC 2007, the topics come from CSIRO Enquiries, and the topic statements are richer and more colloquial.. In document search, we look into the key resource page pre-selection, the use of anchor text, query(More)
LETOR, the benchmark collection for learning to rank, helps make comparative study on different approaches in experimental research. Since the collection is constructed mainly based on TREC datasets, queries and documents in LETOR differ from true Web search scenario on some aspects, such as its incomplete link information, limited documents' domain, and(More)
Ground truth labels are one of the most important parts in many test collections for information retrieval. Each label, depicting the relevance between a query-document pair, is usually judged by a human, and this process is time-consuming and labor-intensive. Automatically Generating labels from click-through data has attracted increasing attention. In(More)
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