Results 51 to 60 of about 459,743 (229)

Priority-based message forwarding and query processing in opportunistic wireless sensor network

open access: yesTongxin xuebao, 2014
A priority-based algorithm called PBQ was proposed for the query forwarding and processing in opportunistic wireless sensor network.Through the user-defined query priorities,the proposed algorithm properly selects the relay nodes and controlls the ...
Yong-xuan LAI, Zi-yu LIN
doaj   +2 more sources

Group Processing of Multiple k-Farthest Neighbor Queries in Road Networks

open access: yesIEEE Access, 2020
Advances in mobile technologies and map-based applications enables users to utilize sophisticated spatial queries, including k-nearest neighbor and shortest path queries.
Hyung-Ju Cho, Muhammad Attique
doaj   +1 more source

Knowledge-infused and Consistent Complex Event Processing over Real-time and Persistent Streams

open access: yes, 2016
Emerging applications in Internet of Things (IoT) and Cyber-Physical Systems (CPS) present novel challenges to Big Data platforms for performing online analytics. Ubiquitous sensors from IoT deployments are able to generate data streams at high velocity,
Prasanna, Viktor   +2 more
core   +1 more source

Research on simple query algorithm during mobile terminal disconnection

open access: yesTongxin xuebao, 2014
A simple query processing algorithm SQPID (simple query processing in disconnection),was proposed.Main idea of SQPID is to build integrated related semantic cache item about current query through combining and clipping operations.In order to simplify the
Ru-bing LIANG, Qiong LIU
doaj   +2 more sources

Distributed Processing of Location-Based Aggregate Queries Using MapReduce

open access: yesISPRS International Journal of Geo-Information, 2019
The location-based aggregate queries, consisting of the shortest average distance query (SAvgDQ), the shortest minimal distance query (SMinDQ), the shortest maximal distance query (SMaxDQ), and the shortest sum distance query (SSumDQ) are new types of ...
Yuan-Ko Huang
doaj   +1 more source

Survey on AI Powered New Techniques for Query Processing and Optimization

open access: yesJisuanji kexue yu tansuo, 2020
As one of the most challenging problems in data management, query processing and optimization are always widely concerned by researchers. However, it is very difficult for traditional techniques to meet the diverse requirements of modern database system ...
SONG Yumeng, GU Yu, LI Fangfang, YU Ge
doaj   +1 more source

On Statistical Query Sampling and NMR Quantum Computing

open access: yes, 2003
We introduce a ``Statistical Query Sampling'' model, in which the goal of an algorithm is to produce an element in a hidden set $Ssubseteqbit^n$ with reasonable probability.
Blum, Avrim, Yang, Ke
core   +1 more source

Advanced processing for ontological queries

open access: yesProceedings of the VLDB Endowment, 2010
Ontology-based data access is a powerful form of extending database technology, where a classical extensional database (EDB) is enhanced by an ontology that generates new intensional knowledge which may contribute to answer a query.
CALÌ€ A, Georg Gottlob, Andreas Pieris
openaire   +4 more sources

Reverse Query Processing [PDF]

open access: yes2007 IEEE 23rd International Conference on Data Engineering, 2007
Generating databases for testing database applications (e.g., OLAP or business objects) is a daunting task in practice. There are a number of commercial tools to automatically generate test databases. These tools take a database schema (table layouts plus integrity constraints) and table sizes as input in order to generate new tuples.
Carsten Binnig, Donald Kossmann, Eric Lo
openaire   +2 more sources

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