turn on suggestions

Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

- JMP User Community
- :
- Discussions
- :
- Discussions
- :
- nonlinear regression

Topic Options

- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Get Direct Link
- Email to a Friend
- Report Inappropriate Content

Apr 25, 2011 3:40 PM
(1603 views)

What should I do if after I run the nonlinear regression and the following message appears on the control panel:

"Consider looser convergence criteria or selec "accept current estimates" under "iteration options".

Failed: Cannot decrease objective function

"Consider looser convergence criteria or selec "accept current estimates" under "iteration options".

Failed: Cannot decrease objective function

3 REPLIES

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Get Direct Link
- Email to a Friend
- Report Inappropriate Content

I have also received this message: Failed: Cannot Decrease Objective Function

when running a logistic regression. I am not sure what this means or how to fix this problem; I've run many logistic regressions and never received this error message before.

Thanks for any insight you might have!

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Get Direct Link
- Email to a Friend
- Report Inappropriate Content

The Nonlinear platform is very powerful and versatile. It has many options. Therefore, there are many reasons why you might get such an error message. The objective function, which could be many different functions, is monitored as the parameter estimates are updated. Since the function did not change (decrease), it cannot tell if it converged. So it would help if you could describe the nature of your

- predictor variable
- response vairable
- model (column formula)
- starting values

Otherwise it is difficult to provide you a useful answer.

Learn it once, use it forever!

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Get Direct Link
- Email to a Friend
- Report Inappropriate Content

Did you try one of the suggestions? In particular, did you accept the current estimates and examine the fitted model to see if it was acceptable?

Learn it once, use it forever!