Results 31 to 40 of about 382,992 (165)

Curvature-aided Incremental Aggregated Gradient Method

open access: yes, 2017
We propose a new algorithm for finite sum optimization which we call the curvature-aided incremental aggregated gradient (CIAG) method. Motivated by the problem of training a classifier for a d-dimensional problem, where the number of training data is $m$
Nedic, Angelia   +3 more
core   +1 more source

An Algorithm for Global Maximization of Secrecy Rates in Gaussian MIMO Wiretap Channels [PDF]

open access: yes, 2015
Optimal signaling for secrecy rate maximization in Gaussian MIMO wiretap channels is considered. While this channel has attracted a significant attention recently and a number of results have been obtained, including the proof of the optimality of ...
Charalambous, Charalambos D.   +1 more
core   +1 more source

The Mathematics and Physics of Diderot. I. On Pendulums and Air Resistance

open access: yes, 2014
In this article Denis Diderot's Fifth Memoir of 1748 on the problem of a pendulum damped by air resistance is discussed. Diderot wrote the Memoir in order to clarify an assumption Newton made without further justification in the first pages of the ...
Dahmen, Silvio R.
core   +1 more source

Interior-Point Algorithms with Full Newton Steps for Nonsymmetric Convex Conic Optimization

open access: yesSIAM Journal on Optimization
We design and analyze primal-dual, feasible interior-point algorithms (IPAs) employing full Newton steps to solve convex optimization problems in standard conic form. Unlike most nonsymmetric cone programming methods, the algorithms presented in this paper require only a logarithmically homogeneous self-concordant barrier (LHSCB) of the primal cone ...
Dávid Papp, Anita Varga
openaire   +2 more sources

A Full-Newton Step Interior-Point Method for Weighted Quadratic Programming Based on the Algebraic Equivalent Transformation

open access: yesMathematics
In this paper, a new full-Newton step feasible interior-point method for convex quadratic programming is presented and analyzed. The idea behind this method is to replace the complementarity condition with a non-negative weight vector and use the ...
Yongsheng Rao   +2 more
doaj   +1 more source

Evaluation of MATPOWER and OpenDSS load flow calculations in power systems using parallel computing

open access: yesThe Journal of Engineering, 2017
This study presents the work carried out by the authors to apply Intel MKL PARDISO (a parallel sparse matrix solver) to the load flow solution algorithms of MATPOWER and OpenDSS. The goal is to explore the potential execution time reduction obtained when
Gerardo Guerra, Juan A. Martinez-Velasco
doaj   +1 more source

Propagator with Positive Cosmological Constant in the 3D Euclidian Quantum Gravity Toy Model

open access: yes, 2014
We study the propagator on a single tetrahedron in a three dimensional toy model of quantum gravity with positive cosmological constant. The cosmological constant is included in the model via q-deformation of the spatial symmetry algebra, that is, we use
Bunting, William, Rovelli, Carlo
core   +3 more sources

INFRARED COUNTERPARTS OF X-RAY GALAXIES

open access: yesOdessa Astronomical Publications, 2019
Population studies of the extragalac- tic objects are a major part of the universe large-scale structure study. Apart from radio, infrared, and visible wavelength bands, observations and further identification of extragalactic objects such as galaxies ...
A. V. Tugay, S. Yu. Shevchenko
doaj   +1 more source

Adaptive Finite Element Methods with Inexact Solvers for the Nonlinear Poisson-Boltzmann Equation

open access: yes, 2011
In this article we study adaptive finite element methods (AFEM) with inexact solvers for a class of semilinear elliptic interface problems. We are particularly interested in nonlinear problems with discontinuous diffusion coefficients, such as the ...
Adams   +18 more
core   +2 more sources

A New Full-Newton Step $O(n)$ Infeasible Interior-Point Algorithm for $P_*(\kappa)$-horizontal Linear Complementarity Problems [PDF]

open access: yesComputer Science Journal of Moldova, 2014
In this paper, we first present a brief review about the feasible interior-point algorithm for $P_*(\kappa)$-horizontal linear complementarity problems (HLCPs) based on new directions.
Soodabeh Asadi, Hossein Mansouri
doaj  

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