Results 31 to 40 of about 193,669 (327)
Simulation Subsumption or Déjà vu on the Web [PDF]
, 2008 Simulation unification is a special kind of unification adapted to retrieving semi-structured data on the Web. This article introduces simulation subsumption, or containment, that is, query subsumption under simulation unification. Simulation subsumption
A. Klug +6 more
core +2 more sources
Efficient and Provable Multi-Query Optimization
, 2017 Complex queries for massive data analysis jobs have become increasingly commonplace. Many such queries contain com- mon subexpressions, either within a single query or among multiple queries submitted as a batch.
Kathuria, Tarun, Sudarshan, S.
core +1 more source
Trade-Offs Computing Minimum Hub Cover Toward Optimized Labeled Graph Query Processing
Online Academic Journal of Information Technology, 2018 As techniques for graph query processing mature, the need for optimization is increasingly becoming an imperative. Indices are one of the key ingredients toward efficient query processing strategies via cost-based optimization.
Hasan M. Jamil +3 more
doaj +1 more source
Review of Multi-table Join Order Selection in Databases Based on Machine Learning [PDF]
Jisuanji gongchengMulti-table join order selection refers to the process of determining the optimal join sequence among the tables involved in a query during query optimization, to improve execution performance.
WANG Hao, GAO Jintao, WANG Jie
doaj +1 more source
Research and Implementation of Document-Relational Data Query Execution Tech-nology
Jisuanji kexue yu tansuo, 2020 With the arrival of the era of big data, Internet applications have produced abundant data types. Integ-rating storage, query and organization of data with various structures is a research hotspot of large data management system.
MA Zhicheng, YUAN Haifeng, GU Yang, LIU Yaru, ZHANG Xiao
doaj +1 more source
Learned Query Optimization by Constraint-Based Query Plan Augmentation
MathematicsOver the last decades, various cost-based optimizers have been proposed to generate optimal plans for SQL queries. These optimizers are key to achieving good performance in database systems and can speed up query execution.
Chen Ye +4 more
doaj +1 more source
Query-guided End-to-End Person Search
, 2019 Person search has recently gained attention as the novel task of finding a person, provided as a cropped sample, from a gallery of non-cropped images, whereby several other people are also visible. We believe that i.
Amin, Sikandar +3 more
core +1 more source
Exploring lipid diversity and minimalism to define membrane requirements for synthetic cells
FEBS Letters, EarlyView.Designing the lipid membrane of synthetic cells is a complex task, in which its various roles (among them solute transport, membrane protein support, and self‐replication) should all be integrated. In this review, we report the latest top‐down and bottom‐up advances and discuss compatibility and complexity issues of current engineering approaches ...
Sergiy Gan +2 more
wiley +1 more source
Optimizing the Performance of Data Warehouse by Query Cache Mechanism
IEEE Access, 2022 Fast access of data from Data Warehouse (DW) is a need for today’s Business Intelligence (BI). In the era of Big Data, the cache is regarded as one of the most effective techniques to improve the performance of accessing data.
Ch Anwar Ul Hassan +6 more
doaj +1 more source
Relational Approach to Logical Query Optimization of XPath [PDF]
, 2004 To be able to handle the ever growing volumes of XML documents, effective and efficient data management solutions are needed. Managing XML data in a relational DBMS has great potential.
Keulen, Maurice van
core +1 more source