摘要
基于修正拟牛顿方程,利用Goldstein-Levitin-Polyak(GLP)投影技术,建立了求解带凸集约束的优化问题的两阶段步长非单调变尺度梯度投影算法,证明了算法的全局收敛性和一定条件下的Q超线性收敛速率.数值结果表明新算法是有效的,适合求解大规模问题.
Based on modified quasi-Newton equation,by combining with Goldstein-LevitinPolyak(GLP) projection technique,a new non monotone two stages stepsize variable metric gradient projection method for convex set constrained optimization problem is presented.The global convergence property of the algorithm is proved.Under some reasonable conditions,it is proved that the algorithm has Q-superlinear convergence rate.The numerical results show that the new method is effective and is fit to solve large-scale problems.
引文
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