%0 Journal Article
%T Widening of Suitable Limits of Grey System GM(1,1) Model<br>灰色系统GM(1,1)模型适用范围拓广
%A Li Xican
%A <br>李希灿
%J 系统工程理论与实践
%D 1999
%I 
%X In this paper, we study the fact that a constant which multiplies all data in the coarse series would influence the values of model and prediction. The result that GM(1,1) model is suitable to negative data sequence is obtained.
%K grey system
%K model
%K grey parameters<br>灰色系统
%K 模型
%K 灰色参数
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=962324E222C1AC1D&jid=1D057D9E7CAD6BEE9FA97306E08E48D3&aid=E633728F027D67D8D75EA59DD00CE0C6&yid=B914830F5B1D1078&vid=2A8D03AD8076A2E3&iid=CA4FD0336C81A37A&sid=C3BF5C58156BEDF0&eid=74011071555EB4E5&journal_id=1000-6788&journal_name=系统工程理论与实践&referenced_num=4&reference_num=0