Keyphrases
- text documents
- text representation
- ranking scheme
- tf idf
- text mining
- comparative sentences
- part of speech
- text classification
- information extraction
- text categorization
- wordnet
- natural language
- keywords
- topic models
- document clustering
- bag of words
- syntactic structures
- semantic information
- search engine
- named entities
- query expansion
- unsupervised learning
- ranking algorithm
- indexing scheme
- semi supervised
- ranking functions
- machine learning
- vector space model
- semantic similarity
- natural language processing
- question answering
- k nearest neighbor
- knn
- active learning
- databases