介绍灰色新陈代谢模型、传统的灰色-马氏链模型和改进的灰色-马氏链模型,并分别用3种模型对河南省2013年的粮食产量做出预测。通过与观察数据的对比分析,得出改进的灰色-马氏链模型在粮食产量预测方面比前两种模型的预测精度更高。
Introduced the Metabolic GM ( 1, 1 ) model, traditional Gray-Markov chain model and the improved Grey-Markov chain model. With three kinds of model, the grain output of Henan prov- ince was predicted 2013. Comparing the date, Gray-Markov model was superior to Gray-metabolism model in the grain yield.