Keyphrases
- language modeling
- query expansion
- language model
- retrieval model
- document ranking
- ir models
- information retrieval systems
- language modelling
- cross lingual
- information retrieval
- retrieval effectiveness
- pseudo relevance feedback
- relevance model
- relevant documents
- text retrieval
- relevance feedback
- document retrieval
- query terms
- probabilistic model
- n gram
- relevance assessments
- retrieved documents
- term dependencies
- cross language
- vector space model
- tf idf
- text classification
- text mining
- word segmentation
- trec collections
- question answering
- retrieval systems
- machine learning
- active learning
- statistical language modeling