activations.hpp

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// Copyright (c) 2014-2023, Lawrence Livermore National Security, LLC.
// Produced at the Lawrence Livermore National Laboratory.
// Written by the LBANN Research Team (B. Van Essen, et al.) listed in
// the CONTRIBUTORS file. <lbann-dev@llnl.gov>
//
// LLNL-CODE-697807.
// All rights reserved.
//
// This file is part of LBANN: Livermore Big Artificial Neural Network
// Toolkit. For details, see http://software.llnl.gov/LBANN or
// https://github.com/LLNL/LBANN.
//
// Licensed under the Apache License, Version 2.0 (the "Licensee"); 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.

#ifndef LBANN_INCLUDE_LBANN_OPERATORS_ACTIVATIONS_ACTIVATIONS_HPP_INCLUDED
#define LBANN_INCLUDE_LBANN_OPERATORS_ACTIVATIONS_ACTIVATIONS_HPP_INCLUDED

#include <lbann/operators/declare_stateless_op.hpp>

namespace lbann {

LBANN_DECLARE_STATELESS_ELEMENTWISE_OPERATOR(LogSigmoid, "log sigmoid", true);

LBANN_DECLARE_STATELESS_ELEMENTWISE_OPERATOR(Selu, "SELU", true);

LBANN_DECLARE_STATELESS_ELEMENTWISE_OPERATOR(Sigmoid, "sigmoid", true);
// Sigmoid function output is strictly in (0,1)
// Note: Output is in the range [eps,1-eps], where 'eps' is machine
// epsilon. This avoids denormalized floats and helps mitigate some
// numerical issues.
#define LBANN_ENABLE_SIGMOID_CUTOFF

LBANN_DECLARE_STATELESS_ELEMENTWISE_OPERATOR(Softplus, "softplus", true);

LBANN_DECLARE_STATELESS_ELEMENTWISE_OPERATOR(Softsign, "softsign", true);

} // namespace lbann

#undef DEFINE_ENTRYWISE_UNARY_LAYER
#undef UNARY_ETI_DECL_MACRO
#undef UNARY_ETI_DECL_MACRO_DEV

#endif // LBANN_INCLUDE_LBANN_OPERATORS_ACTIVATIONS_ACTIVATIONS_HPP_INCLUDED