Results 21 to 30 of about 117,286 (265)
3D TOPOLOGICAL SUPPORT IN SPATIAL DATABASES: AN OVERVIEW [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021 The storage of spatial data that consists of spatial and non-spatial properties requires a database management system that possesses spatial functions that can cater to the spatial characteristics of data.
S. Salleh, U. Ujang, S. Azri
doaj +1 more source
Top-k Spatial Preference Queries in Directed Road Networks
ISPRS International Journal of Geo-Information, 2016 Top-k spatial preference queries rank objects based on the score of feature objects in their spatial neighborhood. Top-k preference queries are crucial for a wide range of location based services such as hotel browsing and apartment searching.
Muhammad Attique +3 more
doaj +1 more source
The Efficient Processing of Moving k-Farthest Neighbor Queries in Road Networks
Algorithms, 2022 Given a set of facilities F and a query point q, a k-farthest neighbor (kFN) query returns the k farthest facilities f1,f1,⋯,fk from q. This study considers the moving k-farthest neighbor (MkFN) query that constantly retrieves the k facilities farthest ...
Hyung-Ju Cho
doaj +1 more source
Topological queries in spatial databases
Proceedings of the fifteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems, 1996 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Christos H. Papadimitriou +2 more
openaire +2 more sources
Optimizing Spatial Databases [PDF]
Informatică economică, 2010 This paper describes the best way to improve the optimization of spatial databases: through spatial indexes. The most commune and utilized spatial indexes are R-tree and Quadtree and they are presented, analyzed and compared in this paper. Also there are
Anda VELICANU, Ştefan OLARU
doaj
Positional quality assessment based on linear elements
Revista Cartográfica, 2021 This study describes the current state of the art related to the assessment of the positional accuracy of spatial databases based on lines. The use of this type of element of spatial databases has increased in recent years because of the current ...
Antonio Tomás Mozas-Calvache
doaj +1 more source
Differentially Private and Skew-Aware Spatial Decompositions for Mobile Crowdsensing
Sensors, 2018 Mobile Crowdsensing (MCS) is a paradigm for collecting large-scale sensor data by leveraging mobile devices equipped with small and low-powered sensors. MCS has recently received considerable attention from diverse fields, because it can reduce the cost ...
Jong Seon Kim +2 more
doaj +1 more source
Land, 2020 Many cities lack complex spatial databases that can answer the question “What does a given green space offer?” This complicates the lives of inhabitants, planners, and local authorities.
Edyta Łaszkiewicz +2 more
doaj +1 more source
The SSP-Tree: A Method for Distributed Processing of Range Monitoring Queries in Road Networks
ISPRS International Journal of Geo-Information, 2017 This paper addresses the problem of processing range monitoring queries, each of which continuously retrieves moving objects that are currently located within a given query range.
HaRim Jung, Ung-Mo Kim
doaj +1 more source
Visualization of 3D Survey Data for Strata Titles
ISPRS International Journal of Geo-Information, 2020 Major cities and urban areas are beginning to develop and use 3D properties and public facilities. Consequently, 3D cadastral surveys are increasingly being employed for strata unit ownership registration as a part of land administration services.
Trias Aditya +5 more
doaj +1 more source