Lymba's PowerAnswer 4 in TREC 2007.
Dan I. MoldovanChristine ClarkMoldovan BowdenPublished in: TREC (2007)
Keyphrases
- test collection
- information retrieval
- retrieval effectiveness
- question answering
- pseudo relevance feedback
- ad hoc retrieval
- biomedical information retrieval
- expert search
- relevance feedback
- trec blog track
- interactive query expansion
- information extraction
- query expansion
- blog opinion retrieval
- ir evaluation
- data sets
- decision trees
- multimedia
- social networks
- artificial intelligence
- genetic algorithm
- machine learning
- databases