Keyphrases
- independent component analysis
- information retrieval
- test collection
- average precision
- team members
- question answering
- precision and recall
- face recognition
- feature extraction
- clef ip
- preprocessing
- pseudo relevance feedback
- retrieval effectiveness
- high precision
- recall oriented
- relevance judgments
- data mining
- signal processing
- image processing
- ad hoc retrieval
- independent components
- artificial intelligence
- biomedical information retrieval
- document retrieval
- web search engines
- search tasks
- principal component analysis
- digital libraries
- search engine