KECIR Information Retrieval System for NTCIR7 IR4QA Task.
Dongfeng CaiDongyuan LiYu BaiBo ZhouPublished in: NTCIR (2008)
Keyphrases
- information retrieval systems
- information retrieval
- retrieval effectiveness
- test collection
- question answering
- patent retrieval
- query expansion
- ir evaluation
- retrieval model
- document collections
- retrieval systems
- relevance assessments
- relevance feedback
- passage retrieval
- relevant documents
- web retrieval
- user queries
- inverted file
- interactive information retrieval
- structured documents
- graded relevance
- information access
- relevance judgments
- pseudo relevance feedback
- document indexing
- average precision
- retrieval quality
- search engine
- query translation
- language model
- music information retrieval
- retrieved documents
- retrieval engine
- search tasks
- text retrieval
- interactive information retrieval systems