Results 11 to 20 of about 102,125 (260)

HI-Sky: Hash Index-Based Skyline Query Processing

open access: yesApplied Sciences, 2020
The skyline query has recently attracted a considerable amount of research interest in several fields. The query conducts computations using the domination test, where “domination” means that a data point does not have a worse value than ...
Jong-Hyeok Choi   +2 more
doaj   +1 more source

Process Instance Query Language and the Process Querying Framework

open access: yes, 2021
The use of Business Process Management Systems (BPMSs) allows companies to manage the data that flows through process models (business instances) and to monitor all the information and actions concerning a process execution. In general, the retrieval of this information is used not only to measure whether the process works as expected but also to ...
Pérez Álvarez, Jose Miguel   +4 more
openaire   +2 more sources

Process Querying in Apromore [PDF]

open access: yes, 2015
This paper demonstrates the integration and usage of Process Query Language (PQL), a special-purpose programming language for querying large collections of process models based on process model behavior, in the Apromore open-source process model repository.
Artem Polyvyanyy   +5 more
openaire   +3 more sources

Adaptive Query Processing [PDF]

open access: yesFoundations and Trends in Databases, 2007
As the data management field has diversified to consider settings in which queries are increasingly complex, statistics are less available, or data is stored remotely, there has been an acknowledgment that the traditional optimize-then-execute paradigm is insufficient.
Amol Deshpande   +2 more
openaire   +1 more source

Query Refinement into Information Retrieval Systems: An Overview

open access: yesJournal of Information and Organizational Sciences, 2023
Query, expressing the user need and requirement, has an important role, in an information retrieval system, for reaching a high accuracy search. In this paper, we present an overview of the different refinement operations that the query may undergo, in ...
Mawloud Mosbah
doaj   +1 more source

A technique for parallel query optimization using MapReduce framework and a semantic-based clustering method [PDF]

open access: yesPeerJ Computer Science, 2021
Query optimization is the process of identifying the best Query Execution Plan (QEP). The query optimizer produces a close to optimal QEP for the given queries based on the minimum resource usage.
Elham Azhir   +4 more
doaj   +2 more sources

k-step Reachability Query Processing on Label-constrained Graph [PDF]

open access: yesJisuanji kexue, 2022
The k-step reachability query processing on label-constrained graph is used to answer whether there is a path with a length not greater than k between two points and the labels on this path are in the specified label set.The k-step reachability query ...
DU Ming, XING Rui-ping, ZHOU Jun-feng, TAN Yu-ting
doaj   +1 more source

Aggregate Queries in Wireless Sensor Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2012
Recently as efficient processing of aggregate queries for fetching desired data from sensors has been recognized as a crucial part, in-network aggregate query processing techniques are studied intensively in wireless sensor networks.
Jeong-Joon Kim   +4 more
doaj   +1 more source

Parallel query processing in a polystore [PDF]

open access: yesDistributed and Parallel Databases, 2021
The blooming of different data stores has made polystores a major topic in the cloud and big data landscape. As the amount of data grows rapidly, it becomes critical to exploit the inherent parallel processing capabilities of underlying data stores and data processing platforms.
Kranas, Pavlos   +6 more
openaire   +2 more sources

Using the power query system for processing and data mining SAP ERP [PDF]

open access: yesE3S Web of Conferences
The article discusses the use of an intelligent Power Query system for processing data from SAP ERP. When used with SAP ERP data, Power Query can greatly simplify the data analysis process, as well as improve the accuracy and reliability of results.
Tkachenko Alexey, Chernyshov Mikhail
doaj   +1 more source

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