-
Notifications
You must be signed in to change notification settings - Fork 13
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Configurable MNL coefficient bounds #116
Comments
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
In the MNL estimation code there are bounds set on the coefficient values, i guess so that unstable models will converge on something. The bounds are set at (-3, 3) in the older UrbanSim codebase, and (-1000, 1000) in ChoiceModels.
https://github.com/UDST/urbansim/blob/master/urbansim/urbanchoice/mnl.py#L178
https://github.com/UDST/choicemodels/blob/master/choicemodels/mnl.py#L589
https://docs.scipy.org/doc/scipy/reference/generated/scipy.optimize.fmin_l_bfgs_b.html
We should make this configurable from a higher level, like in the model template estimation settings.
The text was updated successfully, but these errors were encountered: