implement an oversampling function

[KennethEnevoldsen]

Augmentation can be used to oversample a category.

Imagined usage would look something like this:

aug = augmenty.load(...)

def is_positive(example):
    """return true if the example contains an entity"""
    if example.y.cats["positive"] == 1:
        return True
    return False

upsampled_corpus = augumenty.oversample(corpus, augmenter=aug, conditional=is_positive, n=1000)