Query Subtopic Mining via Subtractive Initialization of Non-negative Sparse Latent Semantic Analysis.
Deng YiYin ZhangBaogang WeiPublished in: J. Inf. Sci. Eng. (2016)
Keyphrases
- latent semantic analysis
- semantic space
- latent semantic
- co occurrence
- user queries
- information retrieval
- query processing
- singular value decomposition
- relevance feedback
- latent semantic indexing
- query expansion
- data mining
- text summarization
- vector space
- latent dirichlet allocation
- topic modeling
- text mining
- keywords
- document clustering
- multiscale
- knowledge discovery
- high dimensional
- k means
- tf idf
- search engine