The effect of document retrieval quality on factoid question answering performance.
Kevyn Collins-ThompsonJamie CallanEgidio L. TerraCharles L. A. ClarkePublished in: SIGIR (2004)
Keyphrases
- question answering
- retrieval quality
- text retrieval
- passage retrieval
- information retrieval
- document retrieval
- information retrieval systems
- natural language processing
- information extraction
- retrieval effectiveness
- natural language
- term frequency
- document clustering
- document collections
- text summarization
- xml retrieval
- cross language
- tf idf
- retrieval systems
- question answering systems
- answer extraction
- web documents
- qa systems
- syntactic information
- relevant documents
- named entities
- vector space model
- latent semantic indexing
- image retrieval
- semantic roles
- text classification
- active learning
- machine learning
- language model
- test collection