Dualized Topic-Preserving Pseudo Relevance Feedback for Question Answering.
Kyoung-Soo HanPublished in: IEICE Trans. Inf. Syst. (2017)
Keyphrases
- question answering
- pseudo relevance feedback
- passage retrieval
- query expansion
- retrieval effectiveness
- document retrieval
- information retrieval
- sentence retrieval
- language model
- relevant documents
- relevance model
- relevance feedback
- average precision
- natural language processing
- natural language
- information extraction
- retrieved documents
- named entities
- information retrieval systems
- retrieval model
- cross language
- short queries
- query terms
- test collection
- probabilistic model
- noun phrases
- feature space
- data mining
- language modeling
- text retrieval
- news articles
- n gram
- topic models
- document collections
- text mining