"""A post-processor takes features as input and output new features:
:class:`~shennong.features.features.Features` -->
FeaturesPostProcessor -->
:class:`~shennong.features.features.Features`
"""
import abc
import copy
from shennong.features.processor.base import FeaturesProcessor
[docs]class FeaturesPostProcessor(FeaturesProcessor):
[docs] @abc.abstractmethod
def process(self, features):
"""Returns features post-processed from input `features`"""
pass # pragma: no cover
[docs] def get_properties(self, features):
properties = copy.deepcopy(features.properties)
properties[self.name] = self.get_params()
if 'pipeline' not in properties:
properties['pipeline'] = []
properties['pipeline'].append({
'name': self.name,
'columns': [0, self.ndims - 1]})
return properties