PRIS in TREC 2008 Blog Track
BEIJING UNIV OF POST AND TELECOMMUNICATIONS (CHINA)
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This paper describes BUPT pris participation in baseline adhoc retrieval task and the opinion retrieval task at Blog Track 2008. The system adopts a two-stage strategy in the opinion retrieval task. In the first stage, the system carries out a basic topic relevance retrieval to get the top 1,000 documents for each query. In the second stage, our system combines several Maximum Entropy based classifiers to implement opinion judging and ranking.
- Information Science