Keyphrases
- language model
- information extraction
- information retrieval
- language modeling
- n gram
- probabilistic model
- natural language processing
- document retrieval
- precision and recall
- query expansion
- statistical language models
- test collection
- named entity recognition
- free text
- text mining
- named entities
- retrieval model
- question answering
- web mining
- document ranking
- ad hoc information retrieval
- machine learning
- natural language
- language modelling
- structured data
- speech recognition
- semi structured
- word error rate
- vector space model
- web documents
- relevance model
- smoothing methods
- language models for information retrieval
- text summarization
- retrieval effectiveness
- translation model
- query terms
- machine translation
- text classification
- information retrieval systems
- knn
- statistical language modeling
- active learning