Results 61 to 70 of about 391,863 (191)
A Database Query Processing Model in Peer-To-Peer Network
Journal of Applied Sciences and Environmental Management, 2014 Peer-to-peer databases are becoming more prevalent on the internet for sharing and distributing applications, documents, files, and other digital media.
E E Ndueso, P O Asagba
doaj +1 more source
Efficient processing of top-k frequent spatial keyword queries
Scientific Reports, 2022 The rapid popularization of high-speed mobile communication technology and the continuous development of mobile network devices have given spatial textual big data (STBD) new dimensions due to their ability to record geographical objects from multiple ...
Tao Xu +5 more
doaj +1 more source
HitSim: An Efficient Algorithm for Single-Source and Top-k SimRank Computation
InformationSimRank is a widely used metric for evaluating vertex similarity based on graph topology, with diverse applications such as large-scale graph mining and natural language processing. The objective of the single-source and top-k SimRank query problem is to
Jing Bai +5 more
doaj +1 more source
Prediction-Based Filter Updating Policies for Top- Monitoring Queries in Wireless Sensor Networks
International Journal of Distributed Sensor Networks, 2014 Processing top- k query in an energy-efficient manner is an important topic in wireless sensor networks. Redundant data transmitting between base station and sink node is avoided by installing filters on sensor nodes; thus, communication overhead between
Jiping Zheng +4 more
doaj +1 more source
ISPRS International Journal of Geo-Information, 2019 The tremendous advance in information technology has promoted the rapid development of location-based services (LBSs), which play an indispensable role in people’s daily lives. Compared with a traditional LBS based on Point-Of-Interest (POI), which
Xiangdian Zhu +3 more
doaj +1 more source
ASAP Top-k Query Processing in Unstructured P2P Systems [PDF]
, 2011 International audienceTop-k query processing techniques are useful in unstructured peer-to-peer (P2P) systems, to avoid overwhelming users with too many results. However, existing approaches suffer from long waiting times.
Akbarinia, Reza +3 more
core +1 more source
An Exact Top- Query Algorithm with Privacy Protection in Wireless Sensor Networks
International Journal of Distributed Sensor Networks, 2014 Aimed at the Top- k query problems in the wireless sensor networks (WSN) where enquirers try to seek the k highest or shortest reported values of the source nodes, using privacy protection technology, we present an exact Top- k query algorithm based on ...
Huang Haiping +3 more
doaj +1 more source
Direction-Aware Continuous Moving K-Nearest-Neighbor Query in Road Networks
ISPRS International Journal of Geo-Information, 2019 Continuous K-nearest neighbor (CKNN) queries on moving objects retrieve the K-nearest neighbors of all points along a query trajectory. They mainly deal with the moving objects that are nearest to the moving user within a specified period of time.
Tianyang Dong +4 more
doaj +1 more source
Efficient evaluation of Top-k Skyline queries.
Revista Técnica de la Facultad de Ingeniería, 2010 Emerging technologies have made available very large data repositories, which may be unreliable for a given preference criteria. In order to be able to process these repositories, users may need to discard useless information based on some preference ...
Marlene Goncalves, María Esther Vidal
doaj
Probabilistic CkNN Queries of Uncertain Data in Large Road Networks
IEEE Access, 2016 Continuous k-nearest neighbor (CkNN) query processing is an important issue in spatial temporal databases. In real-world scenarios, query clients and data objects may move with uncertain speeds on the road networks, which makes retrieving the exact CkNN ...
Yanhong Li +4 more
doaj +1 more source