Linguistic kernels for answer re-ranking in question answering systems.
Alessandro MoschittiSilvia QuarteroniPublished in: Inf. Process. Manag. (2011)
Keyphrases
- question answering systems
- candidate answers
- natural language
- question answering
- question classification
- natural language processing
- document retrieval
- information retrieval systems
- kernel function
- ranking algorithm
- answering questions
- kernel methods
- tree kernels
- passage retrieval
- learning to rank
- ranking functions
- correct answers
- information retrieval
- web search
- information extraction
- feature space
- support vector
- ranked list
- retrieved documents
- test collection