摘要
根据标准S形曲线的数据特征和平移变换的数学性质,提出倒数一阶差分级比方差的函数变换准则.针对灰色Verhulst模型对初始值选取的依赖性,以新信息x(1)(n)作为初始条件,构建了基于倒数一阶差分级比方差缩小的平移变换灰色Verhulst模型.实例的计算结果验证了模型的有效性.
According to the data characteristics of the standard sigmoid curve and the mathematical properties of the translation transformation,the function transformation criterion with stepwise ratio variance of the reciprocal first-order differential series is put forwarded.As to the dependence of grey Verhulst model on initial value selection,taking the new information x(1)(n)as the initial condition,the translation transformation grey Verhulst model is built up based on reducing stepwise ratio variance for the reciprocal first-order differential series.The results of the practical example verify the validity of the model.
引文
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