Sampling Big Trajectory Data for Traversal Trajectory Aggregate Query.
Yichen DingYanhua LiXun ZhouZhuojie HuangSimin YouJun LuoPublished in: IEEE Trans. Big Data (2019)
Keyphrases
- trajectory data
- moving object trajectories
- data structure
- road network
- spatial data
- moving objects
- database
- traffic management
- temporal information
- mobility data
- space time
- query processing
- range queries
- trajectories of moving objects
- query expansion
- data sources
- spatial queries
- aggregate queries
- spatial networks
- textual information retrieval
- query evaluation
- retrieval systems
- relevance feedback
- learning analytics
- aggregate functions
- map matching
- document collections
- knowledge discovery
- query language
- machine learning