local optimization

The setting up methods, application condition of every parameter team and how to implement local optimization design by adopting parameter team through flow field diagnosis are presented in this paper.

本文给出了各参数组的建立方法、适用条件以及如何通过流场诊断采用组合优化参数群进行局部优化设计。

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The maximum likelihood function of varying stress accelerated life is a nonlinear multi-dimension complex object function with five evaluated parameters, whose parameter estimation is easy to get into local optimization with grads descending algorithm while has low searching efficiency with global optimal algorithm.

变应力加速寿命试验的极大似然函数是高维非线性复杂目标函数，其待估参数多，采用梯度下降优化方法进行参数估计容易陷入局部极值，而采用全局优化方法又存在寻优效率低的问题。

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In this paper, the optimization computation problem of saving energy for the train travelling on the undulating slope line is discussed. To generate the velocity schema curve of optimization operation for train, a computation model combined local optimization with global optimization is proposed.

讨论了在起伏坡道线路上运行的列车节能操纵的优化计算问题，给出了一种局部优化与全局优化相配合的计算结构，用以生成列车优化操纵的速度模式曲线。

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Based on gradient descent rule, the BP ( Back Propagation ) algorithm is a local optimization algorithm.

bp 算法基于梯度下降原理,是一种局部寻优算法.

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A Fast Local Optimization Algorithm for LJ and H_2O Clusters

LJ团簇和H2O团簇的局域优化计算

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It was explained why mutual information, but not correlation ratio based medical image registration be easily trapped in the local optimization maximum.

同时进一步解释了基于互信息相似性测度的医学图像配准易于陷入局部最优，而基于相关比相似性测度的方法易于保证配准得到全局最优。

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