Keyphrases
- retrieval model
- document retrieval
- language model
- language modeling
- information retrieval systems
- test collection
- retrieval effectiveness
- vector space
- information retrieval
- query expansion
- retrieval framework
- text retrieval
- vector space model
- statistical language models
- user queries
- retrieval process
- retrieval systems
- relevance feedback
- sentence retrieval
- tf idf
- passage retrieval
- effective retrieval
- trec collections
- retrieval functions
- neural network
- probabilistic retrieval models
- co occurrence
- web search
- high dimensional
- database systems
- image processing
- machine learning