Sciweavers

Share
TREC
2007

York University at TREC 2007: Genomics Track

10 years 20 days ago
York University at TREC 2007: Genomics Track
Our Genomics experiments in this year mainly focus on improving the passage retrieval performance in the biomedical domain. We address this problem by constructing different indexes. In particular, we propose a method to build word-based index and sentence-based index for our experiments. The passage mean average precision (passage MAP) for our first run “york07ga1” using the word-based index was 0.095 and the passage MAP for our second run “york07ga2” using the sentence-based index was 0.086. However, the passage MAP for our third run “york07ga3” using both the word-based index and UMLS for query expansion degraded to 0.060. All these three official runs are automatic. The evaluation results show that using the word-based index is more effective than using the sentence-based index for improving the passage retrieval performance. We find that pseudo-relevance feedback can make a positive contribution to the retrieval performance. However, we also find that query expan...
Xiangji Huang, Damon Sotoudeh-Hosseinii, Hashmat R
Added 07 Nov 2010
Updated 07 Nov 2010
Type Conference
Year 2007
Where TREC
Authors Xiangji Huang, Damon Sotoudeh-Hosseinii, Hashmat Rohian, Xiangdong An
Comments (0)
books