Abstract
This paper is about adopting the longest common subsequence (LCS) matching for Chinese information retrieval. We re-ranked the retrieved documents by a mixture of the original similarity score and the LCS score obtained by matching the document titles and the query. This LCS-based similarity score is also used in pseudo-relevance feedback in various ways (e.g., selecting terms and filtering documents with low LCS values). We evaluated the use of LCS in title re-ranking and PRF based on the NTCIR-4 test collection for Chinese ad hoc information retrieval. For title queries, our best MAP achieved is 26.7% evaluated using rigid relevance judgement and 30.2% evaluated using relax relevance judgement.
Original language | English |
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Title of host publication | Proceedings of the International Conference on Chinese Computing 2005, ICCC 2005 |
Publisher | Chinese and Oriental Languages Information Processing Society (COLIPS) |
ISBN (Electronic) | 9789810530075, 9810530072 |
Publication status | Published - 1 Jan 2005 |
Event | International Conference on Chinese Computing 2005, ICCC 2005 - Singapore, Singapore Duration: 21 Mar 2005 → 23 Mar 2005 |
Conference
Conference | International Conference on Chinese Computing 2005, ICCC 2005 |
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Country/Territory | Singapore |
City | Singapore |
Period | 21/03/05 → 23/03/05 |
ASJC Scopus subject areas
- General Computer Science