Results 31 to 40 of about 470,015 (281)

RODA: A Fast Outlier Detection Algorithm Supporting Multi-Queries

open access: yesIEEE Access, 2021
Outlier detection is an important task in the field of big data analysis. The technology has been extensively used in network security, sensor data analysis, public health and so on.
Xite Wang, Jiafan Li, Mei Bai, Qian Ma
doaj   +1 more source

Distributed Query Plan Generation Using Multiobjective Genetic Algorithm

open access: yesThe Scientific World Journal, 2014
A distributed query processing strategy, which is a key performance determinant in accessing distributed databases, aims to minimize the total query processing cost.
Shina Panicker, T. V. Vijay Kumar
doaj   +1 more source

Design and Implementation of Spatial Operators and Energy-Efficient Query Processing Strategy in Wireless Sensor Network Database System

open access: yesInternational Journal of Distributed Sensor Networks, 2015
Database applications in wireless sensor networks very often demand data collection from sensor nodes of specific target regions. Design and development of spatial query expressions and energy-efficient query processing strategy are important issues for ...
Chong sok Lim   +3 more
doaj   +1 more source

Efficient Continuous Subgraph Matching Scheme Based on Trie Indexing for Graph Stream Processing

open access: yesApplied Sciences, 2023
With the expansion of the application range of big data and artificial intelligence technologies, graph data have been increasingly used to analyze the relationships among objects.
Dojin Choi   +6 more
doaj   +1 more source

Intra-query adaptivity for MapReduce query processing systems [PDF]

open access: yesProceedings of the 18th International Database Engineering & Applications Symposium on - IDEAS '14, 2014
MapReduce query processing systems translate a query statement into a query plan, consisting of a set of MapReduce jobs to be executed in distributed machines. During query translation, these query systems uniformly allocate computing resources to each job by delegating the same tuning to the entire query plan.
Lucas Filho, Edson Ramiro   +2 more
openaire   +2 more sources

Interactive Multiple-User Location-Based Keyword Queries on Road Networks

open access: yesIEEE Access, 2018
As the use of smart mobile devices increases, users can connect and coordinate with local people or events that match their interests through geosocial networking applications.
Yong Wang   +4 more
doaj   +1 more source

Query management in a sensor environment [PDF]

open access: yes, 2008
Traditional sensor network deployments consisted of fixed infrastructures and were relatively small in size. More and more, we see the deployment of ad-hoc sensor networks with heterogeneous devices on a larger scale, posing new challenges for device ...
Andrieu, Vincent   +2 more
core   +1 more source

Communication Steps for Parallel Query Processing [PDF]

open access: yes, 2013
We consider the problem of computing a relational query $q$ on a large input database of size $n$, using a large number $p$ of servers. The computation is performed in rounds, and each server can receive only $O(n/p^{1-\varepsilon})$ bits of data, where $
Beame, Paul   +2 more
core   +1 more source

Hybrid Ant Algorithm Based Query Processing with Multiagents in Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2013
The wireless sensor networks are usually deployed in various application-specific contexts, which can be treated as distributed databases with big data. The event-involved query responses can be obtained by issuing query requests to this kind of database.
Jianping Yu   +3 more
doaj   +1 more source

Group Tracking for Video Monitoring Systems: A Spatio-Temporal Query Processing Approach

open access: yesIEEE Access, 2023
Recently, many video monitoring systems utilize deep learning technologies to recognize locations and trajectories of people in video data. In video monitoring systems, a fast discovery of human groups is an important task for several applications, for ...
Hyunsik Yoon, Dalsu Choi, Yon Dohn Chung
doaj   +1 more source

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