HD-Tree: An Efficient High-Dimensional Virtual Index Structure Using a Half Decomposition Strategy
HD-Tree: An Efficient High-Dimensional Virtual Index Structure Using a Half Decomposition Strategy
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HD-Tree:一种采用半分解策略的高效高维虚拟索引结构
DOI:
10.3390/a13120338
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发表时间:
2020-12
期刊:
影响因子:
2.3
通讯作者:
Zhenwen He
中科院分区:
文献类型:
--
作者:
Ting Huang;Zhengping Weng;Gang Liu;Zhenwen He
To manage multidimensional point data more efficiently, this paper presents an improvement, called HD-tree, of a previous indexing method, called D-tree. Both structures combine quadtree-like partitioning (using integer shift operations without storing internal nodes, but only leaves) and hash tables (for searching for the nodes stored). However, the HD-tree follows a brand-new decomposition strategy, which is called half decomposition strategy. This improvement avoids the generation of nodes containing only a small amount of data and the sequential search of the hash table, so that it can save storage space while having faster I/O and better time performance when building the tree and querying data. The results demonstrate convincingly that the time and space performance of HD-tree is better than that of D-tree regardless of uniform or uneven data, which are less affected by data distribution.
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DOI:
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发表时间:
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期刊:
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DOI:
10.1109/bigcomp.2018.00070
发表时间:
2018
期刊:
2018 IEEE International Conference on Big Data and Smart Computing (BigComp)
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