Uncertain Voronoi cell computation based on space decomposition
Uncertain Voronoi cell computation based on space decomposition
复制标题
基于空间分解的不确定Voronoi单元计算
DOI:
10.1007/978-3-319-22363-6_6
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发表时间:
2017
期刊:
影响因子:
2
通讯作者:
Reynold Cheng
中科院分区:
文献类型:
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作者:
Emrich;Tobias;Klaus Arthur Schmid;Andreas Züfle;Matthias Renz;Reynold Cheng
The problem of computing Voronoi cells for spatial objects whose locations are not certain has been recently studied. In this work, we propose a new approach to compute Voronoi cells for the case of objects having rectangular uncertainty regions. Since exact computation of Voronoi cells is hard, we propose an approximate solution. The main idea of this solution is to apply hierarchical access methods for both data and object space. Our space index is used to efficiently find spatial regions which must (not) be inside a Voronoi cell. Our object index is used to efficiently identify Delauny relations, i.e., data objects which affect the shape of a Voronoi cell. We develop three algorithms to explore index structures and show that the approach that descends both index structures in parallel yields fast query processing times. Our experiments show that we are able to approximate uncertain Voronoi cells much more effectively than the state-of-the-art, and at the same time, improve run-time performance.
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
Klaus Arthur Schmid;Tobias Emrich;Andreas Züfle;M. Renz;Reynold Cheng
通讯作者:
Reynold Cheng
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
品川幸太;水谷康弘;岩田哲郎
通讯作者:
岩田哲郎