无约束最优化问题中具有全局收敛性的修改的BFGS方法

摘要

给出新的BFGS型公式,并利用弱的Wolfe-Powell步长准则给出新的BFGS型方法.该方法的数值结果比相关文献的方法好.%A new BFGS-type formula and a new BFGS-type method with weak Wolfe-Powell (WWP) step size rule are presented. The numerical results are better than that by using the other method mentioned in relevant references.