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。
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.
文中对初始试探值的选择以及逼近程序收敛性的保证作了较全面的论述，并以扁矩形消声管道为实例检验了系统逼近程序的可靠性。
For given parameter a, the improved approach of the eigenvalue can be determined from the foregoing approaches with the aid of interpolation polynomial.
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