Results 1 to 10 of about 18,987 (168)
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 cohesion queries [PDF]
Proceedings of the 23rd SIGSPATIAL International Conference on Advances in Geographic Information Systems, 2015 Given a set of attractors and repellers, the cohesion query returns the point in database that is as close to the attractors and as far from the repellers as possible. Cohesion queries find applications in various settings, such as facility location problems, location-based services.
Dimitris Sacharidis +1 more
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Survey of Continuous Queries over Spatial-Textual Data Streams
Jisuanji kexue yu tansuo, 2021 The continuous queries over spatial-textual data streams (CQST) are widely used in location-based services, which continuously monitor the results satisfying spatial and textual constraints over updated data streams.
YANG Rong, NIU Baoning
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Authenticating Spatial Queries on Blockchain Systems
IEEE Access, 2021 In many blockchain networks, light nodes (e.g. mobile clients) with few computational resources must rely on more powerful full nodes to retrieve transactions from the chain.
Matteo Loporchio +3 more
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Complex Spatial Query Processing [PDF]
GeoInformatica, 2004 The user of a Geographical Information System is not limited to conventional spatial selections and joins, but may also pose more complicated and descriptive queries. In this paper, we focus on the efficient processing and optimization of complex spatial queries that involve combinations of spatial selections and joins. Our contribution is manifold; we
Mamoulis, N, Papadias, D, Arkoumanis, D
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Modeling and Querying Fuzzy SOLAP-Based Framework
ISPRS International Journal of Geo-Information, 2022 Nowadays, with the rise of sensor technology, the amount of spatial and temporal data is increasing day by day. Modeling data in a structured way and performing effective and efficient complex queries has become more essential than ever.
Sinan Keskin, Adnan Yazıcı
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Path–Based Continuous Spatial Keyword Queries
Complexity, 2022 In this paper, we study the path based continuous spatial keyword queries, which find the answer set continuously when the query point moves on a given path.
Fangshu Chen +5 more
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Geo-Social Top-k and Skyline Keyword Queries on Road Networks
Sensors, 2020 The rapid growth of GPS-enabled mobile devices has popularized many location-based applications. Spatial keyword search which finds objects of interest by considering both spatial locations and textual descriptions has become very useful in these ...
Muhammad Attique +5 more
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Topological queries in spatial databases
Proceedings of the fifteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems, 1996 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Christos H. Papadimitriou +2 more
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EXTENDED MAPTREE: A REPRESENTATION OF FINE-GRAINED TOPOLOGY AND SPATIAL HIERARCHY OF BIM [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Spatial queries play significant roles in exchanging Building Information Modeling (BIM) data and integrating BIM with indoor spatial information. However, topological operators implemented for BIM spatial queries are limited to qualitative relations (e.
Y. Wu +6 more
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