Results 1 to 10 of about 13,582,146 (349)

SLBRIN: A Spatial Learned Index Based on BRIN

open access: yesISPRS International Journal of Geo-Information, 2023
The spatial learned index constructs a spatial index by learning the spatial distribution, which performs a lower cost of storage and query than the spatial indices.
Lijun Wang   +6 more
doaj   +4 more sources

GHGs and air pollutants embodied in China's international trade: Temporal and spatial index decomposition analysis. [PDF]

open access: yesPLoS 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

Spatial autocorrelation equation based on Moran’s index [PDF]

open access: yesScientific Reports, 2023
Moran’s index is an important spatial statistical measure used to determine the presence or absence of spatial autocorrelation, thereby determining the selection orientation of spatial statistical methods.
Yanguang Chen
doaj   +2 more sources

FESTIval: A versatile framework for conducting experimental evaluations of spatial indices

open access: yesMethodsX, 2020
The use of a spatial index is a common strategy to improve the performance of spatial queries in spatial database systems and Geographic Information Systems.
Anderson C. Carniel   +2 more
doaj   +3 more sources

A Spatial Index Based on Clipping Bounding Box of Space Partitioning Tree [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban, 2022
In spatial databases, spatio-temporal indexes based on R tree use minimum bounding box(MBB)to approximate spatio-temporal data to improve query efficiency, and the efficiency of indexing can be further improved by by clipping the bounding box.To ...
XIONG Wei   +4 more
doaj   +1 more source

Enhancing Quad Tree for Spatial Index Using Space Filling Curves [PDF]

open access: yesEngineering and Technology Journal, 2020
Spatial indexes, such as those based on the Quad Tree, are important in spatial databases for the effective implementation of queries with spatial constraints, especially when queries involve spatial links.
Ali Hussain, Rehab Hassan
doaj   +1 more source

Indices of Congested Areas and Contributions of Customers to Congestions in Radial Distribution Networks

open access: yesJournal of Modern Power Systems and Clean Energy, 2022
Congestions are becoming a significant issue with an increasing number of occurrences in distribution networks due to the growing penetration of distributed generation and the expected development of electric mobility.
Jinping Zhao   +3 more
doaj   +1 more source

Research on Three-Dimensional Electronic Navigation Chart Hybrid Spatial Index Structure Based on Quadtree and R-Tree

open access: yesISPRS Int. J. Geo Inf., 2022
The three-dimensional (3D) visualization of the electronic navigation chart (ENC) can reflect the marine environment and various marine features truly, accurately, and directly, to reduce misoperation during chart use and improve the convenience of using
Yunong Zhang   +3 more
semanticscholar   +1 more source

Visibility-Based R-Tree Spatial Index for Consistent Visualization in Indoor and Outdoor Scenes

open access: yesISPRS International Journal of Geo-Information, 2023
(1) Background: The smart city management system, with GIS technology as its core, is based on realistic visualization of multiple types of 3D model data syntheses.
Chengpeng Li   +7 more
doaj   +1 more source

Slot index spatial join [PDF]

open access: yesIEEE Transactions on Knowledge and Data Engineering, 2003
Efficient processing of spatial joins is very important due to their high cost and frequent application in spatial databases and other areas involving multidimensional data. This paper proposes slot index spatial join (SISJ), an algorithm that joins a nonindexed data set with one indexed by an R-tree.
N. Mamoulis (Nikos), D. Papadias
openaire   +5 more sources

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