MATLAB Central Newsreader - Creating new user-defined model in Model-Based Calibration toolbox

Creating new user-defined model in Model-Based Calibration toolbox

Mohammad Monfared — Sun, 30 Nov 2008 18:33:02 -0500

Hi,

In Model-Based Calibration toolbox, I want to define a new model as a user-defined model. My model is going to use the "gamcdf" function, as its function. I've passed the almoste simple steps (by means of a template file called, weibul.m ) described in the help section. But when I want to checkin it:

checkin(xregusermod, 'gammacdf', [0.1:0.01:0.2]'); % my new model is named, gammacdf

this error appears:

??? Error using ==> minus
Matrix dimensions must agree.

I can't recognize from where, this arises. Could anybody give some advice or make it for me?

thanks in advance,
Mohammad

Re: Creating new user-defined model in Model-Based Calibration toolbox

Mohammad Monfared — Mon, 01 Dec 2008 14:55:03 -0500

After making some corrections, I ran into this error:

??? Error using ==> localusermod.features at 48
Invalid response feature definition for user-defined model

the function "i_rfvals(U,b)", is in the optional section of the .m file. I don't know what are response feature, and especially its definition for gamcdf.

any suggestion?

Mohammad,

Re: Creating new user-defined model in Model-Based Calibration toolbox

Ian Noell — Tue, 02 Dec 2008 13:38:01 -0500

Hi Mohammed,

The function weibul.m is setup for the weibul model and contains functionality specific to that model. If you delete the code in the subfunction i_rfvals and replace it with

function [rf,dG]= i_rfvals(U,b) %#ok<INUSL,DEFNU>

rf = [];
dG = [];

it should work. There are other functions in weibul that will be invalid for your model. If you are not certain what to do I suggest you replace all the optional functions with the ones in xregusermod/functemplate.

I recommend that you start from the blank template file xregusermod/functemplate when writing a user-defined model. weibul is documented as an example of user-defined models rather than a template.

I'd be happy to help you further if you send me your user-defined model and let me know what version of MBC you are using.

Best regards,
Ian

Re: Creating new user-defined model in Model-Based Calibration toolbox

Mohammad Monfared — Thu, 04 Dec 2008 15:44:02 -0500

Hi & So thanks Ian,

I've build my models using the template_function as you said, and it was successful !
I have another question, if you would help. In the model setup section of mbcmodel, I've made a two-stage, multiple-model with two model included in the local model. And I like to compare these two ones according to the AICc criterion. In the 431 observations, there are obs where model1 is preferred and obs where model2. How can I count the successful obs for model1 and model2?

Thanks in advanced,
Mohammad

Re: Creating new user-defined model in Model-Based Calibration toolbox

Ian Noell — Tue, 16 Dec 2008 11:12:02 -0500

Hi Mohammed,

There is not a simple way to get a list of all the selected models from the GUI. At the moment the simplest way for you to find out this information is using the command-line API.

I will make an enhancement request to add a the ability to get this information from the GUI.

Best regards,
Ian

"Mohammad Monfared" <gohardoust@gmail.com> wrote in message <gh8ts2$kba$1@fred.mathworks.com>...
> Hi & So thanks Ian,
>
> I've build my models using the template_function as you said, and it was successful !
> I have another question, if you would help. In the model setup section of mbcmodel, I've made a two-stage, multiple-model with two model included in the local model. And I like to compare these two ones according to the AICc criterion. In the 431 observations, there are obs where model1 is preferred and obs where model2. How can I count the successful obs for model1 and model2?
>
> Thanks in advanced,
> Mohammad