Automatic Processing of Audio Lectures for Information Retrieval: Vocabulary Selection and Language Modeling.
Alex ParkTimothy J. HazenJames R. GlassPublished in: ICASSP (1) (2005)
Keyphrases
- language modeling
- automatic processing
- information retrieval
- language model
- retrieval model
- query expansion
- cross lingual
- n gram
- term weighting
- probabilistic model
- document length
- expert finding
- multimedia
- document retrieval
- search engine
- test collection
- statistical language models
- improvements in retrieval effectiveness
- trec collections
- vector space model
- statistical language modeling
- retrieval effectiveness
- relevant documents
- term weighting schemes
- retrieval systems
- data mining
- language modeling framework
- language modeling approaches
- dirichlet prior
- sentence retrieval
- smoothing methods
- information retrieval systems
- active learning