Visualization of Big Spatial Data using Coresets for Kernel Density Estimates.
Visualization of Big Spatial Data using Coresets for Kernel Density Estimates.
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DOI:
10.1109/tbdata.2019.2913655
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发表时间:
2021-07
影响因子:
7.2
通讯作者:
Phillips, Jeff M.
中科院分区:
文献类型:
--
作者:
Zheng, Yan;Ou, Yi;Lex, Alexander;Phillips, Jeff M.
关键词:
The size of large, geo-located datasets has reached scales where visualization of all data points is inefficient. Random sampling is a method to reduce the size of a dataset, yet it can introduce unwanted errors. We describe a method for subsampling of spatial data suitable for creating kernel density estimates from very large data and demonstrate that it results in less error than random sampling. We also introduce a method to ensure that thresholding of low values based on sampled data does not omit any regions above the desired threshold when working with sampled data. We demonstrate the effectiveness of our approach using both, artificial and real-world large geospatial datasets.
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DOI:
10.14778/2735479.2735485
发表时间:
2015-01
期刊:
Proceedings of the VLDB Endowment. International Conference on Very Large Data Bases
影响因子:
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发表时间:
2013-12-01
影响因子:
5.2
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通讯作者:
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影响因子:
0.8
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DOI:
10.1109/tvcg.2012.265
发表时间:
2012-12-01
影响因子:
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