Results 21 to 30 of about 3,193,900 (299)
Multi-Step Processing of Spatial Joins [PDF]
, 1994 Spatial joins are one of the most important operations for combining spatial objects of several relations. In this paper, spatial join processing is studied in detail for extended spatial objects in twodimensional data space.
Kriegel, Hans-Peter +7 more
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Linking Off-Road Points to Routing Networks
Algorithms, 2022 Although graph theory has already been introduced in spatial reasoning, current spatial database systems do not provide out-of-the-box routing on geometric points that are not matched on the graph.
Dominik Köppl
doaj +1 more source
D-GridMST: Clustering Large Distributed Spatial Databases [PDF]
, 2005 In this paper, we will propose a distributable clustering algorithm, called Distributed-GridMST (D-GridMST), which deals with large distributed spatial databases.
Liu, Han, Zhang, Ji, Han Liu, Ji Zhang
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Finding Visible kNN Objects in the Presence of Obstacles within the User’s View Field
ISPRS International Journal of Geo-Information, 2019 In many spatial applications, users are only interested in data objects that are visible to them. Hence, finding visible data objects is an important operation in these real-world spatial applications.
I-Fang Su +3 more
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Query processing of geometric objects with free form boundarie sin spatial databases [PDF]
, 1993 The increasing demand for the use of database systems as an integrating factor in CAD/CAM applications has necessitated the development of database systems with appropriate modelling and retrieval capabilities.
Kriegel, Hans-Peter +3 more
core +1 more source
Group Tracking for Video Monitoring Systems: A Spatio-Temporal Query Processing Approach
IEEE Access, 2023 Recently, many video monitoring systems utilize deep learning technologies to recognize locations and trajectories of people in video data. In video monitoring systems, a fast discovery of human groups is an important task for several applications, for ...
Hyunsik Yoon, Dalsu Choi, Yon Dohn Chung
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Cohesive Ridesharing Group Queries in Geo-Social Networks
IEEE Access, 2020 Ridesharing has gained much attention as a solution for mitigating societal, environmental, and economic problems. For example, commuters can reduce traffic jams by sharing their rides with others.
Changbeom Shim +2 more
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In-Path Oracles for Road Networks
ISPRS International Journal of Geo-Information, 2023 Many spatial applications benefit from the fast answering to a seemingly simple spatial query: “Is a point of interest (POI) ‘in-path’ to the shortest path between a source and a destination?” In this context, an in-path POI is one that is either on the ...
Debajyoti Ghosh +3 more
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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
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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
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