Investigation of Question Classifier in Question Answering.
Zhiheng HuangMarcus ThintAsli CelikyilmazPublished in: EMNLP (2009)
Keyphrases
- question answering
- question classification
- question answering systems
- qa clef
- natural language questions
- qa systems
- answer extraction
- answer validation
- answering questions
- candidate answers
- open domain question answering
- information extraction
- feature weighting
- information retrieval
- natural language processing
- feature space
- natural language
- cross language
- syntactic information
- question answer pairs
- relation extraction
- passage retrieval
- feature selection
- training data
- named entities
- support vector
- machine learning
- probabilistic model
- sentence retrieval
- relational databases
- support vector machine
- textual entailment recognition
- automatically generated