1997 Volume 48 Issue 2-3 Pages 99-115
This paper presents the grey method to analysis with difference equation on the relation between cumulative input and output in cumulative curve. GW(1,2) and GW (1,1) models are applied for the representaion of characteristics of cumulative curve. Cumulative curve is made from a number of different types curve. The boundary points for cumulative curve are found from the second difference computation of cumulative data. This paper also discussed how this boundary points were applied for the computation of GW(1,2) and GW(1,1) models. Inventory volume and stay time in systems are computed from the proposed model. Laplace transformation can be applied for representation of this cumulative curve.