Results 21 to 30 of about 23,439 (262)
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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A Privacy‐Preserving Spatial Index for Spatial Query Processing
Wireless Communications and Mobile Computing, 2018 An increasing amount of active research is being conducted to protect the locations of mobile device users. Users must tune to more data than they would like to in order to hide their location. In particular, if a user requests a query over k NN, the number of objects the user must receive ...
Doohee Song, MoonBae Song, Kwangjin Park
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Efficiently Processing Spatial and Keyword Queries in Indoor Venues [PDF]
IEEE Transactions on Knowledge and Data Engineering, 2021 Due to the growing popularity of indoor location-based services, indoor data management has received significant research attention in the past few years. However, we observe that the existing indexing and query processing techniques for the indoor space do not fully exploit the properties of the indoor space.
Zhou Shao +4 more
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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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Efficient spatial data partitioning for distributed $$k$$ k NN joins
Journal of Big Data, 2022 Parallel processing of large spatial datasets over distributed systems has become a core part of modern data analytic systems like Apache Hadoop and Apache Spark.
Ayman Zeidan, Huy T. Vo
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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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A Spatial Index Based on Clipping Bounding Box of Space Partitioning Tree [PDF]
Zhengzhou 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
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Query Processing in Spatial Network Databases [PDF]
, 2003 Despite the importance of spatial networks in real-life applications, most of the spatial database literature focuses on Euclidean spaces. In this paper we propose an architecture that integrates network and Euclidean information, capturing pragmatic constraints.
Dimitris Papadias +3 more
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