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Nonparametric Extension of Regression Functions Outside Domain

机译:域外回归函数的非参数扩展

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The article refers to the problem of regression functions estimation in the points situated near the edges but outside of function domain. We investigate the model y_i = R(x_i) + ε_i, i = 1, 2,... n, where xi is assumed to be the set of deterministic inputs, x_i ∈ D, y_i is the set of probabilistic outputs, and ε_i is a measurement noise with zero mean and bounded variance. R(.) is a completely unknown function. In the literature the possible ways of finding unknown function are based on the algorithms derived from the Parzen kernel. These algorithms were also applied to estimation of the derivatives of unknown functions. The commonly known disadvantage of the kernel algorithms is that the error of estimation dramatically increases if the point of estimation x is approaching to the left or right bound of interval D. Algorithms on predicting values in the boundary region outside the function domain D are unknown for the author, so far. The main result of this paper is a new algorithm based on integral version of Parzen methods for local prediction of values of the function R near boundaries in the region outside domain. The results of numerical experiments are presented.
机译:该物品是指位于边缘附近但在功能域之外的点数的回归函数估计问题。我们研究了y_i = r(x_i)+ε_i,i = 1,2,... n,其中xi被认为是确定性输入的集合,x_i≠d,y_i是概率输出的集合和ε_i是具有零均值和有界方差的测量噪声。 R(。)是一个完全未知的功能。在文献中,找到未知功能的可能方法是基于从Parzen内核导出的算法。这些算法也应用于估计未知功能的衍生物。内核算法的常见缺点是,如果估计点x接近间隔d的左侧或向右界限,则估计误差显着增加。函数域D外边界区域中的边界区域中的值算法是未知的作者到目前为止。本文的主要结果是一种基于积分版本的Parzen方法的新算法,用于局域出域外域近边界的函数R值的局部预测。提出了数值实验的结果。

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