再论离散GM(1,1)模型的病态问题研究

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针对离散GM(1,1)模型在参数辩识过程是否出现病态问题,利用矩阵条件数进行了研究,研究结果表明:直接用原始数据建模,模型会出现很大的病态问题,问题的严重性很大程度上与原始数据大小有关.解决问题的方法是通过数乘变换,使原始数据都变成为小于1的数,则离散灰色GM(1,1)模型中的病态问题就会得到有效解决.
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