'Compute and apply normalization of the given data. Returns a new
data table.
Parameters
data : Orange.data.Table
A data table to be normalized.
Returns
data : Orange.data.Table
Normalized data table.'

def __call__(self, data):

    from . import normalize
    if all((a.attributes.get('skip-normalization', False) for a in data.domain.attributes if a.is_continuous)):
        return data
    normalizer = normalize.Normalizer(zero_based=self.zero_based, norm_type=self.norm_type, transform_class=self.transform_class)
    return normalizer(data)
