Keyphrases
- information retrieval
- query expansion
- retrieval systems
- query processing
- relevance feedback
- user queries
- information retrieval systems
- boolean queries
- spatio temporal
- search engine
- term selection
- retrieval model
- model for information retrieval
- temporal ordering
- document retrieval
- data structure
- temporal structure
- database
- ad hoc retrieval
- query terms
- range queries
- temporal constraints
- keywords
- text retrieval
- text mining
- effective retrieval
- query formulation
- data sources
- temporal information
- spatial and temporal
- response time
- image representation
- term dependence
- document collections
- temporal aspects
- retrieval process
- temporal data
- tf idf
- query evaluation