대한원격탐사학회:학술대회논문집 (Proceedings of the KSRS Conference)
- 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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- Pages.721-723
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- 2003
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- 1226-9743(pISSN)
Spatiotemporal Aggregate Functions for Temporal GIS
- Kim, Jin-Soo (Database Laboratory, ChungBuk National University) ;
- Shin, Hyun-Ho (Database Laboratory, ChungBuk National University) ;
- Chi, Jeong-Hee (Database Laboratory, ChungBuk National University) ;
- Ryu, Keun-Ho (Database Laboratory, ChungBuk National University)
- 발행 : 2003.11.03
초록
Aggregation is an operation that returns a result value through a computational process on the data which satisfy a certain condition. Recently many applications use aggregation to analyze spatiotemporal data. Although spatiotemporal data change its states over time, previous aggregation works have only dealt with spatial or temporal aspect of object. In this paper we propose spatiotemporal aggregate functions that operate on spatiotemporal data. The proposed algorithms are evaluated through some implementation results. The experiment results show that the proposed aggregate functions are applicable to spatiotemporal data efficiently.