Results 231 to 240 of about 23,439 (262)

GISQF: An Efficient Spatial Query Processing System

2014 IEEE 7th International Conference on Cloud Computing, 2014
Collecting observations from all international news coverage and using TABARI software to code events, the Global Database of Event, Language, and Tone (GDELT) is the only global political georeferenced event dataset with 250+ million observations covering all countries in the world from January 1, 1979 to the present with daily updates. The purpose of
Khaled Mohammed Al-Naami, Sadi Evren Seker, Latifur Khan   +2 more
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Efficient Processing of Spatial Group Preference Queries

2019
POIs (points of interest) as well as users’ check-in information and their ratings on POIs have been widely studies in systems providing location-based services. We note that users usually have their own preferences for POI categories and their own network of friends.
Zhou Zhang 0006, Peiquan Jin, Yuan Tian, Shouhong Wan, Lihua Yue   +4 more
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P2P Spatial Query Processing by Delaunay Triangulation

2005
Although a number of methods have been proposed to process exact match or range queries in P2P network, very few attention has been paid on spatial query process. In this paper, we propose a triangular topology of P2P network and spatial query processing methods on this topology.
Hye-Young Kang, Bog-Ja Lim, Ki-Joune Li
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Modelling topological spatial relations: Strategies for query processing

Computers & Graphics, 1994
Abstract This paper investigates the processing of spatial queries with topological constraints, for which current database solutions are inappropriate. Topological relations, such as disjoint, meet, overlap, inside, and contains, have been well defined by the 9-intersection, a comprehensive model for binary topological relations.
CLEMENTINI, ELISEO, SHARMA J., EGENHOFER M. J.   +2 more
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Scalable processing of spatial queries

2016
In recent years, geospatial data have been produced in mass e.g., through billions of smartphones and wearable devices. Current exponential growth in data generation by mobile devices on the one hand, and the rate and complexity of recent spatial queries on the other hand, highlights the importance of scalable query processing techniques.
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Surrounding Join Query Processing in Spatial Databases

2017
Spatial join queries play an important role in spatial database, and mostly all the distance-based join queries are based on the range search and nearest neighbour (NN), namely range join query and kNN join query. In this paper, we propose a new join query which is called surrounding join query.
Lingxiao Li, David Taniar, Maria Indrawan-Santiago, Zhou Shao   +3 more
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Smooth query processing in spatial database

2013 Fourth International Conference on Computing, Communications and Networking Technologies (ICCCNT), 2013
Spatial database is a database that is optimized to store and query data. In order to process spatial database a set of functions are needed to process spatial data types called geometry or feature. These set of function are designed by spatial database query framework called Open Geospatial Consortium (OGC).
Tukaram Gawali, R. B. Wagh
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Enriching Blockchain with Spatial Keyword Query Processing

International Journal of Information and Computer Security, 2022
Muhammad Kashif Azhar, Bin Yao 0002, Zhongpu Chen   +2 more
openaire   +1 more source

Efficient Spatial Query Processing in Urban Environments

2019
Location-based services (LBSs) have entered into people’s daily lives with the evolution of telecommunication technologies. LBSs are the services that consider the locations of users to provide tailored information. We study a variety of location-based queries in urban environments.
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Spatial Query Processing on Distributed Databases

2013
In recent years, with the ubiquity of location-aware mobile devices and widespread deployment of wireless networks, location-based services (LBSs) have become popular rapidly. Spatial queries, one useful LBS, enable users to query about the interested data objects near them.
Jiun-Wen Bai, Jun-Zhe Wang, Jiun-Long Huang   +2 more
openaire   +1 more source