【摘要】 <正> 1 引言 在求解无约束优化问题 min f(x) (1.1) x∈R_n的非线性共轭梯度法中,最早的一种由Flethcher和Reeves[6]在1964年提出,它具有如下形式:更多还原

【Abstract】 The standard Wolfe search needs a descent search direction. In this paper, we propose a generalized Wolfe search in which its search direction can be arbitrarily given. Under this generalized Wolfe search, we prove the convergence of the Fletcher-Reeves method for unconstrained optimization.更多还原