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a faster arff parser
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currently we cannot parse multi-instance data #20

Open giuseppec opened 8 years ago

giuseppec commented 8 years ago

OpenML dataset with ID 1438 has multi-instance observation. In arff files this is denoted by a 'relational' variable-type which is currently not supported by any arff reader in R. The header looks like:

 @attribute bag relational 
    @attribute y numeric 
    @attribute x numeric 
    @attribute z numeric 
@end bag

see also https://github.com/openml/OpenML/issues/230

berndbischl commented 8 years ago

We currently throw an informative error. This is non-critical and can be extended later.

berndbischl commented 8 years ago

and that we throw that informative msg is for now unit tested, and we have doced this in readARFF. We are good for now