Keyphrases
- document retrieval
- end to end
- pseudo relevance feedback
- language model
- information retrieval
- query expansion
- relevance feedback
- relevance model
- retrieval model
- text retrieval
- document collections
- cross language
- retrieved documents
- expansion terms
- passage retrieval
- ranking functions
- document ranking
- relevant documents
- information retrieval systems
- ad hoc retrieval
- feature selection
- average precision
- query terms
- n gram
- probabilistic model
- query specific