Problem in the output of kmeans
Problem in the output of kmeans
Hello
I realised a kmeans analysis in Jamovi (Snowcluster package) and I have found a problem in the output.
The label of the clusters in the table Centroids of cluster Table is not the same than in the graph Plot of means across clusters. See the file attached:
Cluster 4 which is the maximum on the first variable, is labelled cluster 1 in the graph.
If I save the cluster membership and make descriptive statistics , I find the same results than in the Table.
Do I understand incorrectly the outputs ?
Thanks for your help.
Fabienne
I realised a kmeans analysis in Jamovi (Snowcluster package) and I have found a problem in the output.
The label of the clusters in the table Centroids of cluster Table is not the same than in the graph Plot of means across clusters. See the file attached:
Cluster 4 which is the maximum on the first variable, is labelled cluster 1 in the graph.
If I save the cluster membership and make descriptive statistics , I find the same results than in the Table.
Do I understand incorrectly the outputs ?
Thanks for your help.
Fabienne
 Attachments

 Output
 Capture d’écran 20231127 à 15.23.02.png (307.56 KiB) Viewed 13521 times
Re: Problem in the output of kmeans
Hi fabstat
Are you using latest version of snowCluster module(ver.7.2.6)? you can check it in jamovi library. Here is a example data(iris data) in folder, which produce correct results.
Best Regards
Seol
Are you using latest version of snowCluster module(ver.7.2.6)? you can check it in jamovi library. Here is a example data(iris data) in folder, which produce correct results.
Best Regards
Seol
 Attachments

 이미지 003.png (110.99 KiB) Viewed 13500 times
 Arnaud Mortier
 Posts: 37
 Joined: Tue Apr 27, 2021 11:39 am
Re: Problem in the output of kmeans
Hello,
I am having the exact same issue on jamovi 2.3.17.0 with snowCluster version 7.0.1 (the latest version that seems available for linux).
More precisely, the problem occurs when I click (or unclick) the "optimal number of clusters" option from the Plot section: it randomly assigns new labels to the clusters, so that the means table changes, but it doesn't change the means plot accordingly  so that the means plot is no more consistent with the labels.
Thanks for any help.
Best regards,
Arnaud
I am having the exact same issue on jamovi 2.3.17.0 with snowCluster version 7.0.1 (the latest version that seems available for linux).
More precisely, the problem occurs when I click (or unclick) the "optimal number of clusters" option from the Plot section: it randomly assigns new labels to the clusters, so that the means table changes, but it doesn't change the means plot accordingly  so that the means plot is no more consistent with the labels.
Thanks for any help.
Best regards,
Arnaud
Re: Problem in the output of kmeans
Hi Arnaud
Could you try to install the latest version of jamovi and snowCluster module(ver. 7.3.9) in jamovi library?
Kind Regards
Seol
Could you try to install the latest version of jamovi and snowCluster module(ver. 7.3.9) in jamovi library?
Kind Regards
Seol
 Attachments

 snow.png (26.49 KiB) Viewed 1789 times
 Arnaud Mortier
 Posts: 37
 Joined: Tue Apr 27, 2021 11:39 am
Re: Problem in the output of kmeans
Hi Seol,
In the library (https://www.jamovi.org/library.html), the latest version that I can see is 6.7.1: Perhaps is it related to the fact that I'm browsing from a linux distribution?
For some reason when I browse the library from within jamovi, the latest version appears to be 7.0.1: Kind regards,
Arnaud
In the library (https://www.jamovi.org/library.html), the latest version that I can see is 6.7.1: Perhaps is it related to the fact that I'm browsing from a linux distribution?
For some reason when I browse the library from within jamovi, the latest version appears to be 7.0.1: Kind regards,
Arnaud
Re: Problem in the output of kmeans
Hi Arnaud
The module versions you mentioned above are very old versions that have not been updated.
It is simply a webpage that shows that these kinds of modules are available.
You can download the latest modules from the jamovi library, which is available inside the jamovi program.
Best Regards
Seol
The module versions you mentioned above are very old versions that have not been updated.
It is simply a webpage that shows that these kinds of modules are available.
You can download the latest modules from the jamovi library, which is available inside the jamovi program.
Best Regards
Seol
 Arnaud Mortier
 Posts: 37
 Joined: Tue Apr 27, 2021 11:39 am
Re: Problem in the output of kmeans
Hi Seol,
From inside jamovi, I see the version 7.0.1 which is installed, and I don't have the "update" option (see the second screenshot of my previous post).
This usually indicates that there are no later versions available for linux.
Kind regards,
Arnaud
From inside jamovi, I see the version 7.0.1 which is installed, and I don't have the "update" option (see the second screenshot of my previous post).
This usually indicates that there are no later versions available for linux.
Kind regards,
Arnaud
 Arnaud Mortier
 Posts: 37
 Joined: Tue Apr 27, 2021 11:39 am
Re: Problem in the output of kmeans
Additional info (sorry I couldn't find a button to simply edit my previous answer): I checked with a colleague of mine who works on windows, from inside jamovi the version that he sees is 7.1.7 and the problem does occur similarly.
Best regards,
Arnaud
Best regards,
Arnaud
Re: Problem in the output of kmeans
Hi Arnaud
Here is a snowCluster module in Ubuntu jamovi now. Please check the version of snowCluster module.
Kind Regards
Seol
Here is a snowCluster module in Ubuntu jamovi now. Please check the version of snowCluster module.
Kind Regards
Seol
 Attachments

 20240831 09 24 10.png (37.05 KiB) Viewed 1320 times
 Arnaud Mortier
 Posts: 37
 Joined: Tue Apr 27, 2021 11:39 am
Re: Problem in the output of kmeans
Hi Seol,
It works, thank you very much for your help and your patience.
I had to update jamovi to 2.5.9 for the module to show up in the library.
Thanks again.
Kind regards,
Arnaud
It works, thank you very much for your help and your patience.
I had to update jamovi to 2.5.9 for the module to show up in the library.
Thanks again.
Kind regards,
Arnaud