Results 51 to 60 of about 4,751,671 (372)
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
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
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
Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +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
Statistical Query Algorithms for Mean Vector Estimation and Stochastic Convex Optimization [PDF]
ACM-SIAM Symposium on Discrete Algorithms, 2015 Stochastic convex optimization, by which the objective is the expectation of a random convex function, is an important and widely used method with numerous applications in machine learning, statistics, operations research, and other areas.
V. Feldman +2 more
semanticscholar +1 more source
FEBS Letters, EarlyView.Atovaquone is an antimalarial requiring potentiation for sufficient efficacy. We pursued strategies to enhance its activity, showing that 4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase, decreasing ubiquinone biosynthesis. Since atovaquone competes with ubiquinol in mitochondria, 4‐nitrobenzoate facilitates its action, potentiating ...
Ignasi Bofill Verdaguer +7 more
wiley +1 more source
FEBS Letters, EarlyView.Cells must clear mislocalized or faulty proteins from membranes to survive. The AAA+ ATPase Msp1 performs this task, but dissecting how its six subunits work together is challenging. We engineered linked dimers with varied numbers of functional subunits to reveal how Msp1 subunits cooperate and use energy to extract proteins from the lipid bilayer ...
Deepika Gaur +5 more
wiley +1 more source
Constraint-based Query Distribution Framework for an Integrated Global Schema
, 2009 Distributed heterogeneous data sources need to be queried uniformly using global schema. Query on global schema is reformulated so that it can be executed on local data sources.
Iftikhar, Nadeem +3 more
core +1 more source