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arXiv 1702.01518math.OC
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最优化问题的q线搜索方案

q-Line Search Scheme for Optimization Problem

Suvra Kanti Chakraborty, Geetanjali Panda

摘要:

本文利用q-导数给出了求解无约束和有约束最优化问题的新的下降线搜索迭代格式。在每一步迭代中,该格式提供了一个正定矩阵,它既不是牛顿格式中目标函数的精确Hessian,也不是拟牛顿格式中生成的正定矩阵.该过程不需要二阶可微性。该矩阵的分量使用函数的q-导数构造。证明了该格式在极小点的局部邻域内保持了Newton型格式的性质,从而获得了超线性收敛速率。文中还给出了该方案的数值例子。

英文摘要:

In this paper new descent line search iterative schemes for unconstrained as well as constrained optimization problems are developed using q-derivative. At every iteration of the scheme, a positive definite matrix is provided which is neither exact Hessian of the objective function as in Newton scheme nor the positive definite matrix as generated in quasi-Newton scheme. Second order differentiablity property is not required in this process. Component of this matrix are constructed using q-derivative of the function. It is proved that the schemes preserve the property of Newton-like schemes in a local neighborhood of a minimum point which leads to the super linear rate of convergence. Numerical illustration of the scheme is also provided.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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