Results 11 to 20 of about 422,181 (302)
QML: a hybrid spatial index structure [PDF]
Tongxin xuebao, 2021 In order to enrich the functionalities of existing learned multidimensional indexes and improve the efficiency， the dynamic data segmentation algorithm DDSA was proposed， which could preserve the data distribution characteristics.A hybrid spatial index ...
Dong CUI +3 more
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GHGs and air pollutants embodied in China's international trade: Temporal and spatial index decomposition analysis. [PDF]
PLoS One, 2017 Temporal index decomposition analysis and spatial index decomposition analysis were applied to understand the driving forces of the emissions embodied in China's exports and net exports during 2002-2011, respectively.
Liu Z, Mao X, Song P.
europepmc +2 more sources
State-of-the-Art Geospatial Information Processing in NoSQL Databases
ISPRS International Journal of Geo-Information, 2020 Geospatial information has been indispensable for many application fields, including traffic planning, urban planning, and energy management. Geospatial data are mainly stored in relational databases that have been developed over several decades, and ...
Dongming Guo, Erling Onstein
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A Hierarchical Spatial Network Index for Arbitrarily Distributed Spatial Objects
ISPRS International Journal of Geo-Information, 2021 The range query is one of the most important query types in spatial data processing. Geographic information systems use it to find spatial objects within a user-specified range, and it supports data mining tasks, such as density-based clustering. In many
Xiangqiang Min +3 more
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QRB-tree Indexing: Optimized Spatial Index Expanding upon the QR-tree Index
ISPRS International Journal of Geo-Information, 2021 Support for region queries is crucial in geographic information systems, which process exact queries through spatial indexing to filter features and subsequently refine the selection.
Jieqing Yu, Yi Wei, Qi Chu, Lixin Wu
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International Journal of Digital Earth, 2020 This paper proposes a novel data indexing scheme, the distributed access pattern R-tree (DAPR-tree), for spatial data retrieval in a distributed computing environment.
Jizhe Xia +6 more
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An LSM-Tree Index for Spatial Data
Algorithms, 2022 An LSM-tree (log-structured merge-tree) is a hierarchical, orderly and disk-oriented data storage structure which makes full use of the characteristics of disk sequential writing, which are much better than those of random writing.
Junjun He, Huahui Chen
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PK+ tree: An improved spatial index structure of PK tree [PDF]
, 2005 Spatial index is very important in GIS. PK tree and Hilbert R tree are two well-known spatial index structures. Comparison operations are very little in PK tree, while disk I/O operations are quite little in Hilbert R tree.
Yingwei Luo +7 more
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Surface Spatial Index Structure of High-Dimensional Space
, 2004 This paper proposes a spatial index structure based on a new space-partitioning method. Previous research proposed various high dimensional index structures.
Jiyuan An +5 more
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Improving Spatial neighbor Index Performance Based on [PDF]
Kirkuk Journal of Science, 2014 Spatial data consists of objects in space made up of points, lines, regions and data of higher dimensions. Access method is required to support efficient manipulation of the multi-dimensional spatial objects in the secondary storage.
Nzar Abdulqader Ali Payman Othman Rahem
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