JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) ›› 2016, Vol. 51 ›› Issue (6): 16-23.doi: 10.6040/j.issn.1671-9352.0.2015.267

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Two mixed conjugate gradient methods based on DY

WANG Kai-rong1, GAO Pei-ting2   

  1. College of Mathematics and Statistics, Chongqing University, Chongqing 401331, China
  • Received:2015-06-01 Online:2016-06-20 Published:2016-06-15

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Abstract: Based on DY method, two mixed conjugate gradient methods(GDY1 and GDY2)were proposed. The search directions generated by GDY1 and GDY2 are sufficiently decent directions under some specific conditions, and are global convergence with general wolf line search. Numerical experiments show that the new methods outperform DY conjugate gradient method.

Key words: unconstrained optimization, conjugate gradient methods, sufficiently descent property, Wolfe line searching, global convergence

CLC Number: 

  • O221.2
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