The Pronto QA System at TREC 2007: Harvesting Hyponyms, Using Nominalisation Patterns, and Computing Answer Cardinality.
Johan BosEdoardo GuzzettiJames R. CurranPublished in: TREC (2007)
Keyphrases
- question answering
- question answering systems
- question classification
- qa systems
- information retrieval
- natural language questions
- answer validation
- pattern mining
- answer extraction
- open domain
- candidate answers
- test collection
- question answer pairs
- machine learning
- passage retrieval
- design patterns
- data mining techniques
- information retrieval systems
- relevance feedback
- information extraction
- pattern discovery
- attribute values
- background knowledge
- natural language processing
- evaluation campaigns
- lexico syntactic
- natural language