Results 31 to 40 of about 165,392 (160)
CoRR, 2013 We introduce the problem of performing set-difference range queries, where answers to queries are set-theoretic symmetric differences between sets of items in two geometric ranges. We describe a general framework for answering such queries based on a novel use of data-streaming sketches we call signed symmetric-difference sketches.
David Eppstein +2 more
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International Journal of Distributed Sensor Networks, 2016 In the field of wireless sensor networks, the secure range query technique is a challenging issue. In two-tiered wireless sensor networks, a verifiable privacy-preserving range query processing method is proposed that is based on bucket partition ...
Hua Dai +5 more
doaj +1 more source
CSRQ: Communication-Efficient Secure Range Queries in Two-Tiered Sensor Networks
Sensors, 2016 In recent years, we have seen many applications of secure query in two-tiered wireless sensor networks. Storage nodes are responsible for storing data from nearby sensor nodes and answering queries from Sink.
Hua Dai +4 more
doaj +1 more source
ISPRS International Journal of Geo-InformationWith the rapid development of geo-positioning technologies, location-based services have become increasingly widespread. In the field of location-based services, range queries on geographical data have emerged as an important research topic, attracting ...
Zhuolin Mei +7 more
doaj +1 more source
Sensors, 2018 With the rapid development of mobile devices and sensors, effective searching methods for big spatial data have recently received a significant amount of attention.
Bumjoon Jo, Sungwon Jung
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Authentication of moving range queries [PDF]
Proceedings of the 21st ACM international conference on Information and knowledge management, 2012 A moving range query continuously reports the query result (e.g., restaurants) that are within radius $r$ from a moving query point (e.g., moving tourist). To minimize the communication cost with the mobile clients, a service provider that evaluates moving range queries also returns a safe region that bounds the validity of query results.
Duncan Yung, Eric Lo 0001, Man Lung Yiu
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Distributed Efficient Similarity Search Mechanism in Wireless Sensor Networks
Sensors, 2015 The Wireless Sensor Network similarity search problem has received considerable research attention due to sensor hardware imprecision and environmental parameter variations. Most of the state-of-the-art distributed data centric storage (DCS) schemes lack
Khandakar Ahmed, Mark A. Gregory
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A Probabilistic Range Query of Moving Objects in Road Network
IEEE Access, 2019 The range query of moving objects in a road network is widely used in battlefield environment, intelligent transportation systems, and mobile phone location. It has gradually become a research hotspot in the field of spatiotemporal data management.
Yaqing Shi +3 more
doaj +1 more source
IEEE AccessData owners are increasingly drawn to outsource their data due to the massive processing capabilities and scalable storage offered by cloud-based Internet of Things (IoT) solutions.
Sultan Basudan, Abdulrahman Alamer
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Encoding Range Minimum Queries
CoRR, 2013 We consider the problem of encoding range minimum queries (RMQs): given an array A[1..n] of distinct totally ordered values, to pre-process A and create a data structure that can answer the query RMQ(i,j), which returns the index containing the smallest element in A[i..j], without access to the array A at query time.
Pooya Davoodi +3 more
openaire +3 more sources