Research on the relation of the gray industrial clustering and forecastmodel and its application in the Shenzhen component stock index

Based the gray trend relational degree and systems engineering theory,the model of gray trend relational system is investigated.As an application of this model,the gray trend clustering method is presented.Taking the Shenzhen component stock index as the sample,various industries are clustered by gray trend clustering method,and the clustering result accords with index wave fact.It shows that the gray trend clustering foecast method is valid,convenient and practical.