The TMODEL Procedure

The TMODEL procedure is a new, experimental version of the MODEL procedure. The code that you use to perform nearly all analyses in PROC MODEL can be used unchanged in PROC TMODEL; however, PROC TMODEL incorporates high-performance computational techniques and offers new features that enhance the functionality of PROC MODEL.

One of the most powerful enhancements in PROC TMODEL compared to PROC MODEL is the ability to reduce the time required to perform computationally intensive tasks, such as estimating parameters in a nonlinear ordinary differential equation (ODE) model. This estimation task requires both the numerical integration of derivative variables in the model over time steps and the repeated evaluation of the time steps during the estimation�s minimization process.


For further details, see the SAS/ETS® User's Guide