A Hybrid Method for Nonlinear Least Squares Problems

查看全文 作　　者：Zhongyi [1]Liu;Linping [2]Sun 机构地区：[1]School of Sciences, Hehai University, Nanjing 210098, China.;[2]Department of Mathematics, Nanjing University, Nanjing 210093, China. 出　　处：《Numerical Mathematics A Journal of Chinese Universities(English Series)》索引2007年第16卷第1期,共5页 摘　　要：A negative curvature method is applied to nonlinear least squares problems with indefinite Hessian approximation matrices. With the special structure of the method, a new switch is proposed to form a hybrid method. Numerical experiments show that this method is feasible and effective for zero-residual, small-residual and large-residual problems. 关 键 词：杂交法 最小二乘问题 非线性 曲率 数值逼近