Keyphrases
- query expansion
- wordnet
- co occurrence
- information retrieval systems
- natural language processing
- word sense disambiguation
- semantic relatedness
- retrieval effectiveness
- language model
- semantic relations
- language modeling
- information retrieval
- text retrieval
- semantic information
- retrieval model
- pseudo relevance feedback
- knowledge base
- web pages
- semantic network
- ad hoc retrieval
- text documents
- semantic similarity
- relevant documents
- semantic relationships
- relevance feedback
- keywords
- query terms
- web documents
- retrieved documents
- user generated content
- machine learning