Keyphrases
- document retrieval
- similarity based retrieval
- language model
- document collections
- information retrieval
- similarity measure
- ranking functions
- retrieval model
- text retrieval
- distance measure
- relevance feedback
- spreading activation
- passage retrieval
- learning to rank
- pseudo relevance feedback
- cross language
- semantic similarity
- document indexing
- retrieval strategies
- information retrieval systems
- databases
- probabilistic model
- inverted index
- learning algorithm
- bayesian networks
- machine learning
- data sets