In this paper, the combination properties indexes for the optimum modification of parameters were put forward. Using the POWELL method, the PID parameters can be easily optimized.
本文提出参数最优整定的综合性能指标，用POWELL方法可以方便的寻优出最优pid参数。
Multimethod collaborative optimization algorithm based on genetic algorithm, Powell method and pattern searching method is used to find the best parameters of the system project of th…
算例表明，采用该多方法协作优化方法进行一体化优化设计，可以协调导弹的总体参数，提高导弹的总体性能。
Powell method is used in the paper to calculate the reliability index, this method can avoid the complexity of partial derivative calculating, and the example shows that this method is correct.
研究了用方向加速法来进行结构可靠指标的计算方法，该法可以避免对功能函数进行导数计算，并已算例说明该方法的正确性。
Powell is not familiar with the researchers' method, but said he guesses that they are first heat-treating the sewage before they reap its resources.
Powell对研究者的方法并不熟知，但是他猜想他们在获取资源之前，应该是首先对污水进行热处理的。
The method is proved to be globally convergent if the exact line search, the Grippo-Lucidi line search and the Wolfe-Powell line search is used.
文章给出了一种新的非精确线性搜索下的共轭梯度法，说明了在新线性搜索下每次迭代能够产生下降方向。
Experimental results on UCI dataset show Powell algorithm converges fast and its accuracy is higher than that of coordinate descent method and smooth SVM.
UCI数据集上的实验结果表明，算法能很快收敛，且分类精度优于并行下降算法和光滑支持向量机。
Experimental results on UCI dataset show Powell algorithm converges fast and its accuracy is higher than that of coordinate descent method and smooth SVM.
UCI数据集上的实验结果表明，算法能很快收敛，且分类精度优于并行下降算法和光滑支持向量机。
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