An S-shaped curve or S-curve. Curves describing the growth of the number of adopters of an innovation. The elongated S-shape grows from near zero to approach the saturation level over time. The equation of the logistic process is an example. Meade and Islam (2001) discuss the use of such curves in forecasting.
- Meade, N. & T. Islam (2001), “Forecasting the
diffusion of innovations: Implications for time-series extrapolation,” in J. S.
Armstrong (ed.),
*Principles of Forecasting*. Norwell, MA: Kluwer Academic
Press.