Results 21 to 30 of about 22,408 (308)
A Unified Approach to Spatial Proximity Query Processing in Dynamic Spatial Networks
Sensors, 2021 Nearest neighbor (NN) and range (RN) queries are basic query types in spatial databases. In this study, we refer to collections of NN and RN queries as spatial proximity (SP) queries.
Hyung-Ju Cho
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Spatial keyword query processing
Proceedings of the VLDB Endowment, 2013 Geo-textual indices play an important role in spatial keyword querying. The existing geo-textual indices have not been compared systematically under the same experimental framework. This makes it difficult to determine which indexing technique best supports specific functionality.
Chen, Lisi +3 more
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Query Optimization for Distributed Spatio-Temporal Sensing Data Processing
Sensors, 2022 The unprecedented development of Internet of Things (IoT) technology produces humongous amounts of spatio-temporal sensing data with various geometry types.
Xin Li +3 more
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Bidirectional k-nearest neighbor spatial crowdsourcing allocation protocol based on edge computing [PDF]
PeerJ Computer Science, 2023 Spatial crowdsourcing refers to the allocation of crowdsourcing workers to each task based on location information. K-nearest neighbor technology has been widely applied in crowdsourcing applications for crowdsourcing allocation. However, there are still
Jing Zhang +3 more
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Sensors, 2018 With the rapid development of mobile devices and sensors, effective searching methods for big spatial data have recently received a significant amount of attention.
Bumjoon Jo, Sungwon Jung
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Efficient query processing on spatial networks [PDF]
Proceedings of the 13th annual ACM international workshop on Geographic information systems, 2005 A framework for determining the shortest path and the distance between every pair of vertices on a spatial network is presented. The framework, termed SILC, uses path coherence between the shortest path and the spatial positions of vertices on the spatial network, thereby, resulting in an encoding that is compact in representation and fast in path and ...
Jagan Sankaranarayanan +2 more
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GeoSpark SQL: An Effective Framework Enabling Spatial Queries on Spark
ISPRS International Journal of Geo-Information, 2017 In the era of big data, Internet-based geospatial information services such as various LBS apps are deployed everywhere, followed by an increasing number of queries against the massive spatial data.
Zhou Huang +3 more
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Group Processing of Multiple k-Farthest Neighbor Queries in Road Networks
IEEE Access, 2020 Advances in mobile technologies and map-based applications enables users to utilize sophisticated spatial queries, including k-nearest neighbor and shortest path queries.
Hyung-Ju Cho, Muhammad Attique
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A SPATIOTEMPORAL AGGREGATION QUERY METHOD USING MULTI-THREAD PARALLEL TECHNIQUE BASED ON REGIONAL DIVISION [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015 Existing spatiotemporal database supports spatiotemporal aggregation query over massive moving objects datasets. Due to the large amounts of data and single-thread processing method, the query speed cannot meet the application requirements.
S. Liao, L. Chen, J. Li, W. Xiong, Q. Wu
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Resource Capacitated Collective Travel Planning in Spatial Databases
IEEE Access, 2020 The widespread use of GPS smart devices has allowed users to collect location information in real-time, leading to the emergence of ride-sharing services based on users' locations. Ride-sharing services have become effective services that reduce the cost
Junkyu Lee, Seog Park
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