摘要
提出了一种改进的LS共轭梯度法,该方法具有不依赖于所采用的线搜索方法的充分下降性.并证明了该方法在Armijo型搜索下求解非凸问题的全局收敛性,相关的数值实验结果检验了算法的有效性.
In this paper,a modified LS method is proposed.The modified LS methods can generate sufficient descent directions for the objective function,and this property is independent of the line search method used.It is shown that the proposed methods converges globally for general function with an Armijo-type line search.The numerical results show that the proposed modified method are efficient.
出处
《怀化学院学报》
2011年第8期1-4,共4页
Journal of Huaihua University
关键词
LS方法
充分下降
全局收敛
LS method
sufficient descent
global convergence
