Keyphrases
- language modeling
- artificial intelligence
- language model
- information retrieval
- retrieval model
- query expansion
- n gram
- cross lingual
- probabilistic model
- knowledge representation
- text classification
- relevance model
- machine learning
- digital libraries
- word segmentation
- term weighting schemes
- language modeling approaches
- statistical language modeling
- improvements in retrieval effectiveness
- document length
- sentence retrieval
- trec collections
- document retrieval
- natural language processing