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一类回归函数小波估计的相合性

Keywords: 小波估计,相合性,乘法噪声

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Abstract:

由于在实际应用中,回归函数的光滑性往往是未知的,假定回归函数的光滑性并不合理,因此研究一类带乘法噪声的回归模型,在不假定回归函数光滑性的条件下,证明了2种小波估计器的平均相合性.数值实验表明:随着样本容量的增大,由2种小波估计器得到的回归函数越来越接近真实的回归函数.特别地,当样本容量为1000时,2种估计器得出的回归函数与真实回归函数基本吻合.数值实验支持了主要定理.该结论可看成是Chesneau与Shirazi工作的一种补充.

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