Keyphrases
- text documents
- text representation
- ranking scheme
- tf idf
- text mining
- comparative sentences
- part of speech
- text categorization
- text classification
- natural language
- information extraction
- keywords
- wordnet
- document clustering
- unsupervised learning
- topic models
- bag of words
- named entities
- ranking algorithm
- syntactic structures
- semantic information
- indexing scheme
- search engine
- machine learning
- semi supervised
- semantic similarity
- natural language sentences
- query expansion
- ranking functions
- knowledge discovery
- supervised learning
- vector space model
- multiscale
- artificial intelligence
- learning algorithm
- database