Allowed extensions: .CSV & .ARFF
All attributes must be numeric
This does not include the target attribute (it can be categorical)
Supervised datasets can be uploaded
With all examples labelled
Semi-supervised datasets can be uploaded
Examples with -1, -1.0 or "?" on the target attribute will be interpreted as unlabelled examples
A dataset can contain multiple unlabelled examples, but with the same type (-1, -1.0 or "?")