mish.hpp

//*****************************************************************************
// Copyright 2017-2021 Intel Corporation
//
// 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
//
// 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.
//*****************************************************************************
 
#pragma once
 
#include "ngraph/node.hpp"
#include "ngraph/op/op.hpp"
 
namespace ngraph
{
    namespace op
    {
        namespace v4
        {
            /// \brief A Self Regularized Non-Monotonic Neural Activation Function
            /// f(x) =  x * tanh(log(exp(x) + 1.))
            ///
            class NGRAPH_API Mish : public ngraph::op::Op
            {
            public:
                static constexpr NodeTypeInfo type_info{"Mish", 4};
                const NodeTypeInfo& get_type_info() const override { return type_info; }
                Mish() = default;
                /// \brief Constructs an Mish operation.
                ///
                /// \param data Input tensor
                Mish(const Output<Node>& arg);
                bool visit_attributes(AttributeVisitor& visitor) override;
                void validate_and_infer_types() override;
 
                virtual std::shared_ptr<Node>
                    clone_with_new_inputs(const OutputVector& new_args) const override;
 
                bool evaluate(const HostTensorVector& outputs,
                              const HostTensorVector& inputs) const override;
            };
        }
    }
}