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Improving Non-equidistance GM(1,1) Model’s Grey Differential Equation
Author: Mei Fan and Yong Wei Keyword: Unequal interval, Indicator function, Grey differential equation, Accumulation method
Summary: 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) Page: 051~054 Years: 2013
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