Results 31 to 40 of about 27,103 (155)

Optimal Control of Ascent Trajectory for Launch Vehicles: A Convex Approach

open access: yesIEEE Access, 2019
This paper presents an online ascent trajectory optimization algorithm based on optimal control and convex optimization without accurate initial guesses.
Yuan Li   +3 more
doaj   +1 more source

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  

Bad semidefinite programs: they all look the same [PDF]

open access: yes, 2017
Conic linear programs, among them semidefinite programs, often behave pathologically: the optimal values of the primal and dual programs may differ, and may not be attained. We present a novel analysis of these pathological behaviors.
Bauschke H.   +6 more
core   +3 more sources

Cooperative Secure Transmission Relying on Optimal Power Allocation in the Presence of Untrusted Relays, A Passive Eavesdropper and Hardware Impairments

open access: yesIEEE Access, 2019
In this work, by considering a variety of realistic hardware impairments, we aim to enhance the security of a cooperative relaying network, where a source intends to transmit its confidential information to a destination in the presence of a group of ...
Majid Moradikia   +4 more
doaj   +1 more source

Incorporating a four-dimensional filter line search method into an interior point framework [PDF]

open access: yes, 2009
Here we incorporate a four-dimensional filter line search method into an infeasible primal-dual interior point framework for nonlinear programming.
Costa, M. Fernanda P.   +1 more
core  

Finding a point in the relative interior of a polyhedron [PDF]

open access: yes, 2007
A new initialization or `Phase I' strategy for feasible interior point methods for linear programming is proposed that computes a point on the primal-dual central path associated with the linear program. Provided there exist primal-dual strictly feasible
Cartis, Coralia, Gould, Nicholas I. M.
core   +1 more source

Improved Full-Newton Step O(nL) Infeasible Interior-Point Method for Linear Optimization [PDF]

open access: yesJournal of Optimization Theory and Applications, 2009
The authors describe some improvements of the full-Newton step infeasible interior-point method (IIPM) for linear optimization introduced by C. Roos in 2006. The improved full-Newton step IIPM for linear optimization described in this paper can be seen as a homotopy method and has many interesting properties.
Gu, G. (author)   +4 more
openaire   +3 more sources

On Simplex Pivoting Rules and Complexity Theory

open access: yes, 2014
We show that there are simplex pivoting rules for which it is PSPACE-complete to tell if a particular basis will appear on the algorithm's path. Such rules cannot be the basis of a strongly polynomial algorithm, unless P = PSPACE.
Adler, Ilan   +2 more
core   +1 more source

Fast Second-order Cone Programming for Safe Mission Planning

open access: yes, 2017
This paper considers the problem of safe mission planning of dynamic systems operating under uncertain environments. Much of the prior work on achieving robust and safe control requires solving second-order cone programs (SOCP).
Jain, Prateek   +2 more
core   +1 more source

A numerical study of an infeasible interior-point algorithm for convex quadratic semi-definite optimization

open access: yesJournal of Numerical Analysis and Approximation Theory
The focus of this research is to apply primal-dual interior-point pathfollowing methods, specifically those derived from Newton’s method for solving convex quadratic semidefinite optimization (CQSDO) problems. In this paper, we present a numerical study
Yasmina Bendaas, Mohamed Achache
doaj   +1 more source

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