Question Answering System Using Query Expansion and Heuristic Features.
Yolanda SjafrizalIndra BudiMirna AdrianiPhilip ArthurPublished in: CLEF (Working Notes) (2013)
Keyphrases
- query expansion
- information retrieval systems
- information retrieval
- retrieval effectiveness
- pseudo relevance feedback
- language model
- language modeling
- improving search
- retrieval model
- text retrieval
- feature extraction
- feature vectors
- retrieved documents
- original query
- ad hoc retrieval
- query translation
- biomedical information retrieval
- query expansion methods
- vocabulary mismatch
- pseudo feedback
- passage retrieval
- relevance feedback
- machine learning
- question answering
- natural language
- co occurrence