Keyphrases
- information retrieval
- term weighting
- query terms
- document collections
- language modeling
- information retrieval systems
- maximal marginal relevance
- term weighting schemes
- text mining
- test collection
- retrieval systems
- term selection
- information extraction
- regularization term
- language model
- text retrieval
- search engine
- inverse document frequency
- vector space model
- information access
- neural network
- tf idf
- term frequency
- artificial intelligence
- term weights
- digital libraries
- document retrieval
- term extraction
- relevant documents