Source code for zoo.pipeline.api.onnx.mapper.lrn

#
# Copyright 2018 Analytics Zoo Authors.
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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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from zoo.pipeline.api.onnx.mapper.operator_mapper import OperatorMapper
from zoo.pipeline.api.onnx.onnx_helper import OnnxHelper
import zoo.pipeline.api.keras.layers as zlayers



[docs]class LRNMapper(OperatorMapper):
    def __init__(self, node, _params, _all_tensors):
        super(LRNMapper, self).__init__(node, _params, _all_tensors)

    def _to_tensor(self):
        data = self.model_inputs[0].zvalue
        alpha = float(self.onnx_attr['alpha']) if "alpha" in self.onnx_attr else 0.0001
        beta = float(self.onnx_attr['beta']) if "beta" in self.onnx_attr else 0.75
        bias = float(self.onnx_attr['bias']) if "bias" in self.onnx_attr else 1.0
        size = int(self.onnx_attr['size'])
        dim_ordering = "th"

        return zlayers.LRN2D(alpha=alpha, k=bias, beta=beta,
                             n=size, dim_ordering=dim_ordering)(data)