Abstract
This paper describes our experiments in the TREC 2005 Genomics Track. For the ad-hoc retrieval task, we study synonym-based query expan-sion, as well as the effectiveness of a new pseudo-relevance feedback method which is derived from our recent work on semi-supervised learning. For t le categorization task, we study various methods for estimating conditional class probability and determining the optimal threshold parameter essential for obtaining high performance results for this task.
| Original language | English (US) |
|---|---|
| Journal | NIST Special Publication |
| State | Published - 2005 |
| Externally published | Yes |
| Event | 14th Text REtrieval Conference, TREC 2005 - Gaithersburg, MD, United States Duration: Nov 15 2005 → Nov 18 2005 |
ASJC Scopus subject areas
- General Engineering
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