最小样本值 [
zuì xiǎo yàng běn zhí]
smallest sample value
- 文摘:如何量化一种统计方法对异常值的不敏感性一直是稳健统计研究的一个重要课题.检验的样本崩溃点是样本中能逆转判决的离群值的最小比例.在研究相关文献的基础上,计算出指数分布参数极大似然估计检验的样本崩溃点,并分析了样本崩溃点的渐近正态性,为量化统计方法的稳健性提供了一种新的途径.
Abstract: The sample breakdown point of a test is defined as the smallest proportion of arbitrary outlier in the sample that reverses the test decision.In this paper,Wegive the sample breakdown point of a test for maximum likelihood estimate of exponential distribution parameter and analyze the asymptotically normal characteristic of the sample breakdown point. - 一个特例是当隐层神经元的个数与样本个数相等时,就可以求得代价函数值为0的全局最小点。
In particular, when the number of neurons in hidden layer equals the number of training patterns, the global minima with zero cost functions are obtained. - 本方法以瞬间最优控制价值函数最小化为训练目标,考虑了地震输入的能量,利用最速下降梯度法计算权值的改变量,并对敏感度矩阵进行近似处理,可解决神经网络控制中神经网络控制器难以获得的训练输入/输出样本对的难题。
The training object of the algorithm is minimization of the cost function in optimal control, variations of the weight values are obtained by the steepest descend gradient method and moreover an approximate treatment is made on the sensitivity matrix evaluation.
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