Temporal Information Extraction for Temporal Question Answering.
Frank SchilderChristopher HabelPublished in: New Directions in Question Answering (2003)
Keyphrases
- question answering
- information extraction
- natural language processing
- named entities
- information retrieval
- natural language
- precision and recall
- passage retrieval
- semi structured
- text summarization
- qa clef
- relation extraction
- cross language
- text mining
- question answering systems
- question classification
- free text
- semantic roles
- qa systems
- candidate answers
- answer extraction
- machine learning