Results 21 to 30 of about 25,759 (265)
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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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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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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International Journal of Distributed Sensor Networks, 2015 Database applications in wireless sensor networks very often demand data collection from sensor nodes of specific target regions. Design and development of spatial query expressions and energy-efficient query processing strategy are important issues for ...
Chong sok Lim +3 more
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QoS-Aware Approximate Query Processing for Smart Cities Spatial Data Streams
Sensors, 2021 Large amounts of georeferenced data streams arrive daily to stream processing systems. This is attributable to the overabundance of affordable IoT devices.
Isam Mashhour Al Jawarneh +4 more
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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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A NOVEL APPROACH OF INDEXING AND RETRIEVING SPATIAL POLYGONS FOR EFFICIENT SPATIAL REGION QUERIES [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Spatial region queries are more and more widely used in web-based applications. Mechanisms to provide efficient query processing over geospatial data are essential. However, due to the massive geospatial data volume, heavy geometric computation, and high
J. H. Zhao +7 more
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SPATIAL QUERIES ENTITY RECOGNITION AND DISAMBIGUATION USING RULE-BASED APPROACH [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015 In the digital world, search engines have been proposed as one of challenging research areas. One of the main issues in search engines studies is query processing, which its aim is to understand user’s needs.
E. Hamzei, F. Hakimpour, A. Forati
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