Keyphrases
- information extraction
- precision and recall
- temporal data
- temporal information
- free text
- spatio temporal
- natural language processing
- text mining
- temporal constraints
- machine learning
- question answering
- temporal dimension
- spatial and temporal
- relational learning
- temporal relations
- temporal reasoning
- temporal analysis
- semi structured
- conditional random fields
- structured data
- web documents
- temporal patterns
- information retrieval
- web mining
- named entities
- space time
- knowledge discovery
- data model
- case study
- databases