Results 1 to 10 of about 422,181 (302)

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   +3 more sources

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   +2 more sources

HiIndex: An Efficient Spatial Index for Rapid Visualization of Large-Scale Geographic Vector Data

open access: yesISPRS International Journal of Geo-Information, 2021
In the big data era, rapid visualization of large-scale vector data has become a serious challenge in Geographic Information Science (GIS). To fill the gap, we propose HiIndex, a spatial index that enables real-time and interactive visualization of large-
Zebang Liu   +4 more
doaj   +2 more sources

SPAG: Index of spatial agglomeration

open access: yesPapers in Regional Science, 2019
The paper develops a spatial agglomeration index (SPAG) of the economic activity for the point geo‐localizations of firms. It includes the effects of location, the distance between firms and the overlapping impact of the firms' size. The SPAG builds a new class of measures of the spatial density of the economic activity inside the region, based on the ...
Katarzyna Kopczewska   +2 more
exaly   +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

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   +4 more sources

Computation of High-Frequency Sub-National Spatial Consumer Price Indexes Using Web Scraping Techniques

open access: yesEconomies, 2022
The development of Information and Communications Technology and digital economies has contributed to changes in the consumption of goods and services in various areas of life, affecting the growing expectations of users in relation to price statistics ...
Ilaria Benedetti   +3 more
doaj   +1 more source

GeoFlink: An Efficient and Scalable Spatial Data Stream Management System

open access: yesIEEE Access, 2022
This era is witnessing an exponential growth in spatial data due to the increase in GPS-enabled devices. Spatial data can be of extreme use to commercial businesses, governments and NGOs if processed timely.
Salman Ahmed Shaikh   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy