This paper analyzes the difference between industries and convergence within industry of financial ratios for listed firms in China based on a non-parametric approach.

本文采用非参数方法对中国上市公司财务比率在行业间的差异性和行业内的收敛性进行了检验。

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Taking into account the multi channels disturbance and noises with the non stationary characteristic, time delay estimation based on adaptive parametric approach is proposed.

在考虑多通道非平稳信号干扰及背景噪声的情况下，提出了基于自适应参数型时间延时估计方法。

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This paper proposes a rough evolutionary approach to non parametric system identification.

提出了一种用于非参数系统辨识的粗糙进化方法。

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