Source code for mlprodict.onnxrt.ops_cpu.op_scaler
# -*- encoding: utf-8 -*-
# pylint: disable=E0203,E1101,C0111
"""
Runtime operator.
:githublink:`%|py|7`
"""
from ._op import OpRunUnary
[docs]class Scaler(OpRunUnary):
atts = {'offset': None, 'scale': None}
[docs] def __init__(self, onnx_node, desc=None, **options):
OpRunUnary.__init__(self, onnx_node, desc=desc,
expected_attributes=Scaler.atts,
**options)
[docs] def _run(self, x): # pylint: disable=W0221
return self._run_no_checks_(x)
[docs] def _run_no_checks_(self, x): # pylint: disable=W0221
if self.inplaces.get(0, False):
return self._run_inplace(x)
return ((x - self.offset) * self.scale, )
[docs] def _run_inplace(self, x):
x -= self.offset
x *= self.scale
return (x, )
[docs] def _infer_shapes(self, x): # pylint: disable=W0221
"""
Returns the same shape by default.
:githublink:`%|py|35`
"""
return (x, )