Data 1573 NumberOfClasses bug

[giuseppec]

For https://www.openml.org/d/1573 NumberOfClasses is -1 .
Also, the visualization of the target should not be a boxplot, usually barplots are used to visualize discrete target values, shouldn't it ?

[joaquinvanschoren]

@janvanrijn: what is the correct behavior here?

Number of classes should be -1 (or NaN?) because the target is numeric, but if I reprocess it on the server (I just did), I get '2'.

Website: we use boxplots for all numeric features right now (i.e. if the ARFF says that they are numeric). We could change that if you think we really should - could take a while.

[janvanrijn]

Is it possible that the default target attribute has changed in the meantime? 2018-01-25 15:43 GMT+01:00 Joaquin Vanschoren <notifications@github.com>:

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@janvanrijn <https://github.com/janvanrijn>: what is the correct behavior here? Number of classes should be -1 (or NaN?) because the target is numeric, but if I reprocess it on the server (I just did), I get '2'. Website: we use boxplots for all numeric features right now (i.e. if the ARFF says that they are numeric). We could change that if you think we really should - could take a while. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#607 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ACL7-nl0QJCfkasTIiJP-avmAaK9wnrKks5tOJMggaJpZM4Rs66r> .

[joaquinvanschoren]

Don't think so? All other datasets with a numeric target have NumberOfClasses = -1?

[joaquinvanschoren]

Arguably, the ARFF is simply wrong here, and the 'class' attribute should be nominal.

[joaquinvanschoren]

fixed the dataset and uploaded a new version.