Results 61 to 70 of about 522,371 (218)

Analysis and construction of a family of refinable functions based on generalized Bernstein polynomials

open access: yesJournal of Inequalities and Applications, 2016
In this paper, we construct a new family of refinable functions from generalized Bernstein polynomials, which include pseudo-splines of Type II. A comprehensive analysis of the refinable functions is carried out.
Ting Cheng, Xiaoyuan Yang
doaj   +1 more source

Neural Acceleration of Graph Based Utility Functions for Sparse Matrices

open access: yesIEEE Access, 2023
Many graph-based algorithms in high performance computing (HPC) use approximate solutions due to having algorithms that are computationally expensive or serial in nature.
Joshua Dennis Booth, Gregory S. Bolet
doaj   +1 more source

Strong Inequalities for Hermite-Fejér Interpolations and Characterization of K-Functionals

open access: yesAbstract and Applied Analysis, 2014
The works of Smale and Zhou (2003, 2007), Cucker and Smale (2002), and Cucker and Zhou (2007) indicate that approximation operators serve as cores of many machine learning algorithms.
Gongqiang You
doaj   +1 more source

Streaming Algorithms for Submodular Function Maximization

open access: yes, 2015
We consider the problem of maximizing a nonnegative submodular set function $f:2^{\mathcal{N}} \rightarrow \mathbb{R}^+$ subject to a $p$-matchoid constraint in the single-pass streaming setting.
A Badanidiyuru Varadaraja   +16 more
core   +1 more source

One-electron spectral functions of the attractive Hubbard model at intermediate coupling [PDF]

open access: yes, 1999
We calculate the one-electron spectral function of the attractive-U Hubbard model in two dimensions. We work in the intermediate coupling and low-density regime and evaluate analytically the self energy.
M.Yu.Kagan   +13 more
semanticscholar   +1 more source

METHODS OF APPROXIMATION OF FUNCTIONS BY GENERALIZED POLYNOMIALS IN NUMERICAL ANALYSIS PROBLEMS RELATED TO CALCULATIONS ON APPROXIMATE DATA

open access: yesНаука. Инновации. Технологии, 2022
Introduction: the methods of representation of functions given approximately by their singular integrals in relation to approximation problems and numerical methods for solving boundary value problems for differential equations are Investigated.
Igor Eduardovich Naats   +2 more
doaj  

An Efficient Line Search Algorithm for Large Scale Optimization [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2010
In this work we present a new algorithm of gradient descent type, in which the stepsize is computed by means of simple approximation of the Hessian Matrix to solve nonlinear unconstrained optimization function.
Abbas Al-Bayati, Ivan Latif
doaj   +1 more source

Optimal Bounds on Approximation of Submodular and XOS Functions by Juntas

open access: yes, 2015
We investigate the approximability of several classes of real-valued functions by functions of a small number of variables ({\em juntas}). Our main results are tight bounds on the number of variables required to approximate a function $f:\{0,1\}^n ...
Feldman, Vitaly, Vondrak, Jan
core   +1 more source

Modifications of Flower Pollination, Teacher-Learner and Firefly Algorithms for Solving Multiextremal Optimization Problems

open access: yesAlgorithms, 2022
The article offers a possible treatment for the numerical research of tasks which require searching for an absolute optimum. This approach is established by employing both globalized nature-inspired methods as well as local descent methods for ...
Pavel Sorokovikov, Alexander Gornov
doaj   +1 more source

Bicriteria Network Design Problems

open access: yes, 1997
We study a general class of bicriteria network design problems. A generic problem in this class is as follows: Given an undirected graph and two minimization objectives (under different cost functions), with a budget specified on the first, find a
Hunt III, Harry B.   +5 more
core   +4 more sources

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