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On convergence analysis of a derivative-free trust region algorithm for constrained optimization with separable structure

查看全文 作  者:XUE [1]Dan;SUN [1]WenYu 高影响力作者 机构地区:[1]School of Mathematical Sciences,Jiangsu Key Labratory for NSLSCS,Nanjing Normal University高影响力机构 出  处:《Science China Mathematics》索引2014年第57卷第6期,共16页高影响力期刊 基  金:supported by National Natural Science Foundation of China (Grant Nos. 11071122 and 11171159);the Specialized Research Fund of Doctoral Program of Higher Education of China (Grant No. 20103207110002) 摘  要:In this paper,we propose a derivative-free trust region algorithm for constrained minimization problems with separable structure,where derivatives of the objective function are not available and cannot be directly approximated.At each iteration,we construct a quadratic interpolation model of the objective function around the current iterate.The new iterates are generated by minimizing the augmented Lagrangian function of this model over the trust region.The filter technique is used to ensure the feasibility and optimality of the iterative sequence.Global convergence of the proposed algorithm is proved under some suitable assumptions. 关 键 词:信赖域算法 约束优化问题 收敛性分析 导数 结构 分离 迭代序列 拉格朗日函数
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