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本文利用线性经验Bayes估计的思想,对线性回归模型中未知参数向量构造了一类线性经验Bayes估计,并在一定条件下证明了其具有的a.o.收敛速度. 相似文献
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A new wavelet-based image denoising algorithm, which exploits the edge information hidden in the corrupted image, is presented. Firstly, a canny-like edge detector identifies the edges in each subband. Secondly, multiplying the wavelet coefficients in neighboring scales is implemented to suppress the noise while magnifying the edge information, and the result is utilized to exclude the fake edges. The isolated edge pixel is also identified as noise. Unlike the thresholding method, after that we use local window filter in the wavelet domain to remove noise in which the variance estimation is elaborated to utilize the edge information. This method is adaptive to local image details, and can achieve better performance than the methods of state of the art. 相似文献
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本文讨论了小波级数f(x)-Σj≥0Σk≥xCjkΨjk^λ(x)的上、下Buoligangd维数,在小波级数Ψ满足一定的条件下,给出了与Weierstrass函数相应的结果。 相似文献
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设X1,...,Xn是从分布密度函数为f的总中抽取的iid样本,μ=EX1本文研究了密度泛函θ=f(μ)的核型估计,fn(x)为通常的Rosenblatt-Parzen核估计。 相似文献
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