提出了一种混合的FR-PC共轭梯度法,该法每步迭代都可自动产生一个充分下降方向.分别在Wolfe搜索和固定步长公式下证明了算法的全局收敛性,数值实验说明算法是有效的.
A hybrid FR and PC conjugate gradient method for unconstrained optimization was proposed,which generates automatically a sufficient descent direction.Global convergence of new method in which the step-length was computed by Wolfe line search and a fixed formula was proved.Preliminary numerical experiments show that the new method is efficient.