Improving Text Classification with Concept Index Terms and Expansion Terms.
Xianghua FuLianDong LiuTianXue GongLan TaoPublished in: ISNN (3) (2011)
Keyphrases
- index terms
- text classification
- bag of words
- document representation
- term frequency
- vector space model
- text categorization
- query expansion
- document collections
- text mining
- n gram
- feature selection
- machine learning
- language modeling
- pseudo relevance feedback
- unlabeled data
- labeled data
- relevant documents
- web search
- high dimensional
- selection criteria