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Processing spatial keyword query as a top-k aggregation query
Proceedings of the 37th international ACM SIGIR conference on Research & development in information retrieval, 2014We examine the spatial keyword search problem to retrieve objects of interest that are ranked based on both their spatial proximity to the query location as well as the textual relevance of the object's keywords. Existing solutions for the problem are based on either using a combination of textual and spatial indexes or using specialized hybrid indexes
Dongxiang Zhang +2 more
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Processing constrainedK closest pairs query in spatial databases
Wuhan University Journal of Natural Sciences, 2006zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Liu, Xiaofeng +2 more
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Privacy Protected Query Processing on Spatial Networks
2007 IEEE 23rd International Conference on Data Engineering Workshop, 2007With the proliferation of mobile devices (e.g., PDAs, cell phones, etc.), location-based services have become more and more popular in recent years. However, users have to reveal their location information to access location-based services with existing service infrastructures.
Wei-Shinn Ku +3 more
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Spatial query processing using Voronoi diagrams
2015Spatial query processing in spatial databases, Geographic Information Systems (GIS), and on-line maps attempts to extract specific geometric relations among spatial objects. As a prominent category of spatial queries, the class of nearest neighbor queries retrieve spatial objects that minimize specific functions in terms of their distance to a given ...
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Efficient Processing of Spatial Group Keyword Queries
ACM Transactions on Database Systems, 2015With the proliferation of geo-positioning and geo-tagging techniques, spatio-textual objects that possess both a geographical location and a textual description are gaining in prevalence, and spatial keyword queries that exploit both location and textual description are gaining in prominence.
Cao, Xin +4 more
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Query processing over large spatial networks
2014Spatial networks are ubiquitous in various real world applications. For example, GPS navigation systems maintain and query road networks to guide car-drivers to their destinations; while rescue centers maintain the terrain information for the purpose of disaster response.
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Enriching Blockchain with Spatial Keyword Query Processing
International Journal of Information and Computer Security, 2022Muhammad Kashif Azhar +2 more
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Query processing in spatial database systems
2006The management of spatial data in applications such as graphics and image processing, geography as well as computer aided design (CAD) imposes stringent new requirements on spatial database systems, in particular on efficient query processing of complex spatial objects.
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Query Processing in Broadcasted Spatial Index Trees
2001The broadcasting of spatial data together with an index structure is an effective way of disseminating data in a wireless mobile environment. Mobile clients requesting data tune into a continuous broadcast only when spatial data of interest and relevance is available on the channel and thus minimize their power consumption.
Susanne Hambrusch +3 more
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Efficient Processing of Spatial Group Preference Queries
2019POIs (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 +4 more
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