Keyphrases
- technical challenges
- temporal relations
- causal relations
- text segments
- event detection
- linguistic analysis
- factual information
- background knowledge
- text documents
- natural language generation
- video clips
- early days
- event types
- automatically extracted
- automatic extraction
- database
- lessons learned
- activity recognition
- natural language
- bayesian networks
- genetic algorithm
- neural network
- data sets