-Gram vs. Keyword-Based Passage Retrieval for Question Answering.
Davide BuscaldiJosé Manuel Gómez SorianoPaolo RossoEmilio SanchisPublished in: CLEF (2006)
Keyphrases
- passage retrieval
- question answering
- natural language
- information extraction
- sentence retrieval
- natural language processing
- information retrieval
- named entities
- question answering systems
- keywords
- language model
- knowledge representation
- text documents
- document retrieval
- web search engines
- syntactic information
- keyword search
- relational databases
- free text
- audio visual
- qa systems
- multimedia