Feature Selection Based on Term Frequency Reordering of Document Level.
Hongfang ZhouYingjie ZhangHongjiang LiuYao ZhangPublished in: IEEE Access (2018)
Keyphrases
- term frequency
- document level
- text classification
- text categorization
- feature selection
- sentiment classification
- document frequency
- pseudo relevance feedback
- language model
- retrieval model
- sentence level
- query expansion
- sentiment analysis
- query terms
- bag of words
- tf idf
- retrieved documents
- document retrieval
- text documents
- knn
- document representation
- n gram
- average precision
- unsupervised learning
- language modeling
- information retrieval
- feature extraction
- semi supervised learning
- retrieval effectiveness
- machine learning
- text retrieval
- k nearest neighbor
- text mining
- unlabeled data
- feature space
- test collection
- vector space model
- xml retrieval