Keyphrases
- topic specific
- hot topics
- microblog posts
- topic segmentation
- topic models
- document level
- social networks
- manually annotated
- social media
- influence propagation
- conversational speech
- topic tracking
- topic detection and tracking
- text corpora
- genetic algorithm
- test set
- word frequency
- scientific papers
- public opinion
- latent dirichlet allocation
- open domain
- temporal evolution
- contextual features
- sentence level
- keywords
- topology preserving
- news stories