Error resolving Attribute CategoricalAttribute

[thaitanloi365]

Hello,

I'm trying to use Random Forest to classify item's category (either Drink or Food) based on item's name. But I got this error Error resolving Attribute CategoricalAttribute

Here is my example:
https://github.com/thaitanloi365/golearn-example

Please help me to resolve it.
Thanks

[Sentimentron]

Hi thaitanloi365 (apologies that I've haven't been very responsive this project recently, things have been busy).

Running your example, I can see that your testing data does not have all of the categorical labels that your training data does, which is why resolving the categorical attribute fails: everything has to have the same type and that includes all the labels.

To resolve it, I'd use https://godoc.org/github.com/sjwhitworth/golearn/base#ParseCSVToTemplatedInstancesFromReader, which will parse your training data using the attributes from your training data, then everything should line up.

Happy to help further if you run into difficulty.