Ventana software support forum

Hi,

This might be a trivial question - why my payoff reporting file does not contain information on Goodness of Fit, Theil Statistics, and Absolute Errors? It only has information on Metadata & Contributions.

Many thanks.

Hi,
Would anyone share some experience in this, please? Many thanks.

The stats are only present for calibration elements.

I think there was a bug - now fixed - related to synthetic data stats, so check that your version is up to date.

Otherwise, we'd need to see the payoff file at a minimum.

Hi Tom, thanks for your reply. I just updated my Vensim Pro to the latest version 7.3.5. But the problem remains. The following is all information contained in my .rep file after running a payoff optimization. Is there a way to show the full information, e.g. Goodness of Fit, etc?

The payoff is -20.5587
The following are the components of the payoff:
Type Component Contribution Percent Values Params Used Skipped
*P Total Log Likelihood/1 -20.5587 100 -20.5587 0 101 0

Sources for exogenous variables
Data of vehicle inventory Data for calibration 1.xlsx
Linear data of vehicle inventory Data for calibration 1.xlsx
Original Data of vehicle inventory Data for calibration 1.xlsx

A policy (*P) payoff element has no statistics, because Vensim has no way to know what you're comparing.

If you want the built-in stats, you can use a mixed payoff, with *P for priors and penalty terms, and *C for model-data comparisons.