Model Browser User's Guide

Exponential Growth Curve

The exponential growth model is defined by

where is the value of the upper asymptote, is the initial size, and is a scale parameter (time constant controlling the growth rate). The following constraints apply to the fit coefficients:

• > 0, > 0, > 0
• >

The response feature vector g for the exponential growth model is defined as

Weibul Growth Curve

Gompertz Growth Model