Semantic Language Models for Topic Detection and Tracking.
Ramesh NallapatiPublished in: HLT-NAACL (2003)
Keyphrases
- language model
- topic detection and tracking
- relevance model
- vector space model
- document representation
- dependency structure
- language modeling
- n gram
- probabilistic model
- information retrieval
- document retrieval
- retrieval model
- context dependent
- semantic information
- topic detection
- query expansion
- pseudo relevance feedback
- news stories
- semantic similarity
- test collection
- latent semantic indexing
- semantic roles
- ad hoc retrieval
- natural language
- document ranking
- document level
- query terms
- semantic web
- tf idf
- retrieval effectiveness
- semantic features
- machine learning
- text mining
- term frequency
- co occurrence
- image annotation
- low level features