Possible Weka bug (Ordering date attribute)

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Possible Weka bug (Ordering date attribute)

CelestinoXP
In Explorer I click on the edit button to edit my dataset. After clicking
once on the attribute I want to order (date) I click OK and Weka stops
responding. Why? Is it a bug?

I upload the dataset and 2 images to help developers...

I'm using Weka 3.9.5 (snapshot), Amazon Correto 8 (OpenJDK), Windows 10
(64bits).

Dataset_Equipas_Portugal.arff
<https://weka.8497.n7.nabble.com/file/t6658/Dataset_Equipas_Portugal.arff>  
weka_log.PNG <https://weka.8497.n7.nabble.com/file/t6658/weka_log.PNG>  
weka_when_stop_responds.PNG
<https://weka.8497.n7.nabble.com/file/t6658/weka_when_stop_responds.PNG>  



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Re: Possible Weka bug (Ordering date attribute)

Bill Bane
I am using Weka 3.8.1 (Windows 10), and the sorting step described worked for
me without any problem.

Sorry i can't be of more help with 3.9.5.

-Bill





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Re: Possible Weka bug (Ordering date attribute)

CelestinoXP
This post was updated on .
After investigating the problem of ordering date values, I finally found the problem.

When we have "empty" values represented in the dataset by "?", When we try to sort the dataset by the date, it simply blocks without showing errors.

I made a copy of my dataset and removed some values to simplify the reasoning. When do we have values with "?" I can't sort, but if all values have numbers, I can sort.

How do I warn developers about this bug?


Dataset to test:
Dataset_Equipas_Portugal_test2.arff
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Re: Possible Weka bug (Ordering date attribute)

Mark Hall
I've just had a quick go with the current developer snapshot on my Mac with zulu 11 and amazon corretto 8. Both worked without issues.

My suggestion is to launch Weka with the console so that you can see exceptions/errors. I'd hazard a guess that you have a package installed that adds a tab to the Explorer, and this tab is throwing an exception when it receives the sorted dataset. If so, then uninstall this package.

Cheers,
Mark.

´╗┐On 13/02/20, 11:48 PM, "CelestinoXP" <[hidden email]> wrote:

    I changed version JDK to Zulu JDK 8 and i tested with other version of weka,
    weka 3.8.4. Problem persists.
   
    You tested my dataset?
   
   
   
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Re: Possible Weka bug (Ordering date attribute)

CelestinoXP
This post was updated on .
Problem solved. Mark, you are correct :)
Package creates problem is "TPP" in package manager.
Solution: Uninstall TPP package.

Thanks Mark :)

Cheers,
Celestino Laranjeira