New event detection based on indexing-tree and named entity.
Kuo ZhangJuan ZiLi Gang WuPublished in: SIGIR (2007)
Keyphrases
- event detection
- named entities
- information extraction
- named entity recognition
- co occurrence
- event recognition
- natural language processing
- question answering
- video event detection
- information retrieval
- annotated corpus
- activity recognition
- text mining
- relation extraction
- database
- video analysis
- text documents
- unsupervised learning
- content based retrieval
- text streams
- low level
- reinforcement learning
- databases