ifeherva commented on a change in pull request #13632: Gradient reversal (contrib) operator URL: https://github.com/apache/incubator-mxnet/pull/13632#discussion_r246984250
########## File path: src/operator/contrib/gradient_reversal_op-inl.h ########## @@ -0,0 +1,214 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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 + * + * 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. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +/*! + * Copyright (c) 2018 by Contributors + * \file gradient_reversal_op-inl.h + * \brief + * \author Istvan Fehervari +*/ +#ifndef MXNET_OPERATOR_CONTRIB_GRADIENT_REVERSAL_OP_INL_H_ +#define MXNET_OPERATOR_CONTRIB_GRADIENT_REVERSAL_OP_INL_H_ + +#include <mxnet/operator_util.h> +#include <vector> +#include "../mshadow_op.h" +#include "../mxnet_op.h" +#include "../operator_common.h" +#include "../elemwise_op_common.h" +#include "../tensor/init_op.h" + +namespace mxnet { +namespace op { + +struct GradientReversalParam : public dmlc::Parameter<GradientReversalParam> { + float l; + DMLC_DECLARE_PARAMETER(GradientReversalParam) { + DMLC_DECLARE_FIELD(l) + .set_default(0.0) + .describe("Lambda coefficient of the gradient reversal function."); + } +}; + +inline bool GradientReversalOpShape(const nnvm::NodeAttrs& attrs, + std::vector<TShape>* in_attrs, + std::vector<TShape>* out_attrs) { + CHECK_EQ(in_attrs->size(), 1U); + CHECK_EQ(out_attrs->size(), 1U); + + SHAPE_ASSIGN_CHECK(*out_attrs, 0, in_attrs->at(0)); + SHAPE_ASSIGN_CHECK(*in_attrs, 0, out_attrs->at(0)); + return out_attrs->at(0).ndim() != 0U && out_attrs->at(0).Size() != 0U; +} + +inline bool GradientReversalOpType(const nnvm::NodeAttrs& attrs, + std::vector<int>* in_attrs, + std::vector<int>* out_attrs) { + CHECK_EQ(in_attrs->size(), 1U); + CHECK_EQ(out_attrs->size(), 1U); + + TYPE_ASSIGN_CHECK(*out_attrs, 0, in_attrs->at(0)); + TYPE_ASSIGN_CHECK(*in_attrs, 0, out_attrs->at(0)); + return out_attrs->at(0) != -1; +} + +inline bool GradientReversalOpStorageType(const nnvm::NodeAttrs& attrs, + const int dev_mask, + DispatchMode* dispatch_mode, + std::vector<int>* in_attrs, + std::vector<int>* out_attrs) { + CHECK_EQ(in_attrs->size(), 1U); + CHECK_EQ(out_attrs->size(), 1U); + const int in_stype = in_attrs->at(0); + int& out_stype = out_attrs->at(0); + bool dispatched = false; + if (!dispatched && in_stype == kDefaultStorage) { + // dns -> dns Review comment: Right, I think I need use a kernel from another operator as @szha suggested since these functions are rather trivial. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
