Group Non-negative Matrix Factorization with Natural Categories for Question Retrieval in Community Question Answer Archives.
Guangyou ZhouYubo ChenDaojian ZengJun ZhaoPublished in: COLING (2014)
Keyphrases
- question answer
- negative matrix factorization
- asked questions
- nonnegative matrix factorization
- matrix factorization
- sparse representation
- document clustering
- principal component analysis
- image retrieval
- link analysis
- information retrieval
- information retrieval systems
- relevance feedback
- spectral clustering
- digital libraries
- multimedia
- signal processing
- real world
- probabilistic model
- text retrieval
- community detection
- computer vision