[Octave-bug-tracker] [bug #57917] fitgmdist does not return AIC, BIC, etc. - patch attached

[Alois Schlögl]

URL:
  <https://savannah.gnu.org/bugs/?57917>

                 Summary: fitgmdist does not return AIC, BIC, etc.  - patch
attached
                 Project: GNU Octave
            Submitted by: schloegl
            Submitted on: Fri 28 Feb 2020 01:41:02 PM UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 4.4.1
         Discussion Lock: Any
        Operating System: Any

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Details:


When running fitgmdist, matlab reports AIC, BIC, and a number of additional
parameters about convergences and goodness-of-fit paramaters. The
implementation in the current statistics package (v1.4.1), shows only empty
values. The attached patch fixes this. 

I've tested this on octave 4.4.1 on Linux, but it is obviously an issue for
any octave version. 

Here is a test :

 ## Generate a two-cluster problem
 C1 = randn (100, 2) + 1;
 C2 = randn (100, 2) - 1;
 data = [C1; C2];

 ## Perform clustering
 GMModel = fitgmdist (data, 2);
 GMModel.AIC


Please consider applying the patch to the stastistics package. 




 










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File Attachments:


-------------------------------------------------------
Date: Fri 28 Feb 2020 01:41:02 PM UTC  Name:
patch_fitgmdist_fix-missing-outputs.diff  Size: 1KiB   By: schloegl

<http://savannah.gnu.org/bugs/download.php?file_id=48516>

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