摘要
以白化方程为基础,利用梯形公式白化灰导数,同时根据最小二乘法求出时间响应函数中的常数c,得到一种改进的灰色预测模型.应用实例说明改进模型具有较高的预测和拟合精度.
Based on the white different equation and trapezoid formula,grey derivative is whiten; and by using the method of the least square estimate to discover the constant number c in the time response sequence,and the method of metabolism,a new grey prediction model was proposed in the paper.The result of simulation and the comparative analysis show that the amendatory model is better in accuracy.
出处
《数学的实践与认识》
CSCD
北大核心
2014年第2期12-17,共6页
Mathematics in Practice and Theory
基金
河南省自然科学基金项目(0511013800)
关键词
白化方程
灰导数
时间响应函数
预测
white different equation
grey derivative
the time response sequence
prediction
