Results 141 to 150 of about 4,853 (185)
Secure kNN Query Processing in Untrusted Cloud Environments
IEEE Transactions on Knowledge and Data Engineering, 2014 Mobile devices with geo-positioning capabilities (e.g., GPS) enable users to access information that is relevant to their present location. Users are interested in querying about points of interest (POI) in their physical proximity, such as restaurants, cafes, ongoing events, etc.
Sunoh Choi +3 more
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Inverted Grid-Based kNN Query Processing with MapReduce
2012 Seventh ChinaGrid Annual Conference, 2012 With the increasing availability of LBS (Location Based Services) and mobile internet, the amount of spatial data is growing larger and larger. It poses new requirements and challenges towards cloud environments, such as how to accomplish efficient index and query processing on large scale spatial data.
Changqing Ji +7 more
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Research of KNN query processing in road networks
2009 2nd International Conference on Power Electronics and Intelligent Transportation System (PEITS), 2009 With the developments of mobile computations and location-based services, searching for k nearest neighbors in road networks become a challenging research direction. In this paper, we first introduce a road network model based on mobile agents. Based on this model, we design a new algorithm.
null Xuedong Du, null Jiangtao Ji
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GPU-based exhaustive algorithms processing kNN queries
The Journal of Supercomputing, 2017 Efficient kNN search, or k-nearest neighbors search, is useful, among other fields, in multimedia information retrieval, data mining and pattern recognition problems. A distance function determines how similar the objects are to a given kNN query object. As finding the distance between any given pair of objects (i.e., high-dimensional vectors) is known
Ricardo J. Barrientos +3 more
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Efficient and Oblivious Query Processing for Range and kNN Queries (Extended Abstract)
2022 IEEE 38th International Conference on Data Engineering (ICDE), 2022Zhao Chang, Feifei Li, Jeff M Phillips
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An Efficient Framework for Correctness-Aware kNN Queries on Road Networks
2019 IEEE 35th International Conference on Data Engineering (ICDE), 2019 Given a set O of objects and a query point q on a road network, the k Nearest Neighbor (kNN) query returns the k nearest objects in O with the shortest road network distance to q. These kNN queries find many applications in location-based services, e.g., ride-hailing services, where each taxi is regarded as an object.
Dan He 0009 +3 more
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Efficient Oblivious Query Processing for Range and kNN Queries
IEEE Transactions on Knowledge and Data Engineering, 2022Increasingly, individuals and companies adopt a cloud service provider as a primary data and IT infrastructure platform. The remote access of the data inevitably brings the issue of trust. Data encryption is necessary to keep sensitive information secure and private on the cloud.
Zhao Chang +4 more
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