Improving Non-equidistance GM(1,1) Model’s Grey Differential Equation
: Mei Fan and Yong Wei : Unequal interval, Indicator function, Grey differential equation, Accumulation method
: Through analyzing the non-equidistant GM(1,1)models modeling mechanism, by using the Lagrangemean value theorem, the paper find it equal derivative.And get the white differential equation distributed inthe mathematics model. Hence, we can get a new greydifferential equation, and could match the whitedifferential equation. Based on the analysis of indicatorfunction, the parameters a and b can get in the first,then use the twice accumulation method to getparameter c. By the realistic examples, the result isproved to be precise and reliable.
Journal of Grey System(Volume 16) : 051~054 : 2013
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