In collaboration with Payame Noor University and the Iranian Society of Instrumentation and Control Engineers
Control and Optimization
A New Hybrid Conjugate Gradient Method Based on Eigenvalue Analysis for Unconstrained Optimization Problems

Farzad Rahpeymaii; majid rostami

Volume 3, Issue 1 , July 2018, , Pages 27-43

https://doi.org/10.30473/coam.2019.44564.1108

Abstract
  In this paper‎, ‎two extended three-term conjugate gradient methods based on the Liu-Storey ({\tt LS})‎ ‎conjugate gradient method are presented to solve unconstrained optimization problems‎. ‎A remarkable property of the proposed methods is that the search direction always satisfies‎ ...  Read More

Two Settings of the Dai-Liao Parameter Based on Modified Secant Equations

Saeed Nezhadhosein; Sahar Mohammadkhan Sartip

Volume 3, Issue 2 , January 2018, , Pages 59-76

https://doi.org/10.30473/coam.2020.46435.1116

Abstract
  Following the setting of the Dai-Liao (DL) parameter in conjugate gradient (CG) methods‎, ‎we introduce two new parameters based on the modified secant equation proposed by Li et al‎. ‎(Comput‎. ‎Optim‎. ‎Appl‎. ‎202:523-539‎, ‎2007) with two approaches‎, ...  Read More