Moritz Pflanzer | f6ad98a | 2017-07-21 17:19:58 +0100 | [diff] [blame] | 1 | /* |
Michele Di Giorgio | d9eaf61 | 2020-07-08 11:12:57 +0100 | [diff] [blame] | 2 | * Copyright (c) 2017-2020 Arm Limited. |
Moritz Pflanzer | f6ad98a | 2017-07-21 17:19:58 +0100 | [diff] [blame] | 3 | * |
| 4 | * SPDX-License-Identifier: MIT |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to |
| 8 | * deal in the Software without restriction, including without limitation the |
| 9 | * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 10 | * sell copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in all |
| 14 | * copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 22 | * SOFTWARE. |
| 23 | */ |
| 24 | #include "SoftmaxLayer.h" |
| 25 | |
SiCong Li | d004a7a | 2020-05-28 15:26:41 +0100 | [diff] [blame] | 26 | #include "arm_compute/core/Helpers.h" |
Georgios Pinitas | 583137c | 2017-08-31 18:12:42 +0100 | [diff] [blame] | 27 | #include "arm_compute/core/Types.h" |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 28 | #include "utils/TypePrinter.h" |
Moritz Pflanzer | f6ad98a | 2017-07-21 17:19:58 +0100 | [diff] [blame] | 29 | |
| 30 | namespace arm_compute |
| 31 | { |
| 32 | namespace test |
| 33 | { |
| 34 | namespace validation |
| 35 | { |
| 36 | namespace reference |
| 37 | { |
| 38 | template <typename T, typename std::enable_if<is_floating_point<T>::value, int>::type> |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 39 | SimpleTensor<T> softmax_layer_generic(const SimpleTensor<T> &src, float beta, int32_t axis, bool is_log) |
Moritz Pflanzer | f6ad98a | 2017-07-21 17:19:58 +0100 | [diff] [blame] | 40 | { |
| 41 | // Create reference |
Vidhya Sudhan Loganathan | 014333d | 2018-07-02 09:13:49 +0100 | [diff] [blame] | 42 | SimpleTensor<T> dst{ src.shape(), src.data_type(), 1 }; |
Moritz Pflanzer | f6ad98a | 2017-07-21 17:19:58 +0100 | [diff] [blame] | 43 | |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 44 | const int32_t n_dims = static_cast<int32_t>(src.shape().num_dimensions()); |
| 45 | ARM_COMPUTE_ERROR_ON(axis < -n_dims || axis >= n_dims); |
Sheri Zhang | 1f567af | 2020-05-05 11:47:36 +0100 | [diff] [blame] | 46 | |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 47 | const unsigned int actual_axis = static_cast<unsigned int>(wrap_around(axis, n_dims)); |
| 48 | Window window; |
| 49 | window.use_tensor_dimensions(src.shape()); |
| 50 | const unsigned int axis_dimension = src.shape()[actual_axis]; |
| 51 | window.set(actual_axis, Window::Dimension(0, 1, 1)); |
Giuseppe Rossini | 87e896a | 2018-08-24 10:24:12 +0100 | [diff] [blame] | 52 | |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 53 | execute_window_loop(window, [&](const Coordinates & id) |
Moritz Pflanzer | f6ad98a | 2017-07-21 17:19:58 +0100 | [diff] [blame] | 54 | { |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 55 | // Find max along axis |
| 56 | Coordinates offset(id); |
| 57 | offset.set(actual_axis, 0); |
| 58 | T max = *reinterpret_cast<const T *>(src(offset)); |
| 59 | for(unsigned int axis_id = 1; axis_id < axis_dimension; ++axis_id) |
| 60 | { |
| 61 | offset.set(actual_axis, axis_id); |
| 62 | const T val = *reinterpret_cast<const T *>(src(offset)); |
| 63 | if(val > max) |
| 64 | { |
| 65 | max = val; |
| 66 | } |
| 67 | } |
Moritz Pflanzer | f6ad98a | 2017-07-21 17:19:58 +0100 | [diff] [blame] | 68 | |
| 69 | // Regularize |
| 70 | T sum(0.f); |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 71 | for(unsigned int axis_id = 0; axis_id < axis_dimension; ++axis_id) |
Moritz Pflanzer | f6ad98a | 2017-07-21 17:19:58 +0100 | [diff] [blame] | 72 | { |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 73 | offset.set(actual_axis, axis_id); |
| 74 | const T val = *reinterpret_cast<const T *>(src(offset)); |
| 75 | T res{ (val - max) *beta }; |
Sang-Hoon Park | d24affe | 2019-10-08 18:07:23 +0100 | [diff] [blame] | 76 | if(is_log) |
| 77 | { |
| 78 | sum += std::exp(res); |
| 79 | } |
| 80 | else |
| 81 | { |
| 82 | res = std::exp(res); |
| 83 | sum += res; |
| 84 | } |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 85 | *reinterpret_cast<T *>(dst(offset)) = res; |
| 86 | } |
Moritz Pflanzer | f6ad98a | 2017-07-21 17:19:58 +0100 | [diff] [blame] | 87 | |
| 88 | // Normalize |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 89 | for(unsigned int axis_id = 0; axis_id < axis_dimension; ++axis_id) |
Moritz Pflanzer | f6ad98a | 2017-07-21 17:19:58 +0100 | [diff] [blame] | 90 | { |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 91 | offset.set(actual_axis, axis_id); |
| 92 | const T val = *reinterpret_cast<const T *>(dst(offset)); |
Sang-Hoon Park | d24affe | 2019-10-08 18:07:23 +0100 | [diff] [blame] | 93 | if(is_log) |
| 94 | { |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 95 | *reinterpret_cast<T *>(dst(offset)) = val - static_cast<T>(std::log(sum)); |
Sang-Hoon Park | d24affe | 2019-10-08 18:07:23 +0100 | [diff] [blame] | 96 | } |
| 97 | else |
| 98 | { |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 99 | *reinterpret_cast<T *>(dst(offset)) = val / sum; |
Sang-Hoon Park | d24affe | 2019-10-08 18:07:23 +0100 | [diff] [blame] | 100 | } |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 101 | } |
| 102 | }); |
Moritz Pflanzer | f6ad98a | 2017-07-21 17:19:58 +0100 | [diff] [blame] | 103 | return dst; |
| 104 | } |
| 105 | |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 106 | template SimpleTensor<float> softmax_layer_generic(const SimpleTensor<float> &src, float beta, int32_t axis, bool is_log); |
| 107 | template SimpleTensor<half> softmax_layer_generic(const SimpleTensor<half> &src, float beta, int32_t axis, bool is_log); |
Sang-Hoon Park | d24affe | 2019-10-08 18:07:23 +0100 | [diff] [blame] | 108 | |
| 109 | template <typename T, typename std::enable_if<is_floating_point<T>::value, int>::type> |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 110 | SimpleTensor<T> softmax_layer(const SimpleTensor<T> &src, float beta, int32_t axis, bool is_log) |
Sang-Hoon Park | d24affe | 2019-10-08 18:07:23 +0100 | [diff] [blame] | 111 | { |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 112 | return softmax_layer_generic<T>(src, beta, axis, is_log); |
Sang-Hoon Park | d24affe | 2019-10-08 18:07:23 +0100 | [diff] [blame] | 113 | } |
| 114 | |
Michalis Spyrou | d1d7722 | 2020-04-08 14:10:15 +0100 | [diff] [blame] | 115 | template < typename T, typename std::enable_if < std::is_same<T, uint8_t>::value || std::is_same<T, int8_t>::value, int >::type > |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 116 | SimpleTensor<T> softmax_layer(const SimpleTensor<T> &src, float beta, int32_t axis, bool is_log) |
Moritz Pflanzer | f6ad98a | 2017-07-21 17:19:58 +0100 | [diff] [blame] | 117 | { |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 118 | const QuantizationInfo output_quantization_info = arm_compute::get_softmax_output_quantization_info(src.data_type(), is_log); |
Chunosov | f450caa | 2017-11-08 16:09:35 +0700 | [diff] [blame] | 119 | |
Vidhya Sudhan Loganathan | 7485d5a | 2018-07-04 09:34:00 +0100 | [diff] [blame] | 120 | SimpleTensor<float> src_tmp = convert_from_asymmetric(src); |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 121 | SimpleTensor<float> dst_tmp = softmax_layer<float>(src_tmp, beta, axis, is_log); |
Sang-Hoon Park | 0779fec | 2019-11-13 17:08:12 +0000 | [diff] [blame] | 122 | SimpleTensor<T> dst = convert_to_asymmetric<T>(dst_tmp, output_quantization_info); |
Chunosov | f450caa | 2017-11-08 16:09:35 +0700 | [diff] [blame] | 123 | return dst; |
| 124 | } |
| 125 | |
SiCong Li | 96209c7 | 2020-08-21 12:28:30 +0100 | [diff] [blame] | 126 | template SimpleTensor<float> softmax_layer(const SimpleTensor<float> &src, float beta, int32_t axis, bool is_log); |
| 127 | template SimpleTensor<half> softmax_layer(const SimpleTensor<half> &src, float beta, int32_t axis, bool is_log); |
| 128 | template SimpleTensor<uint8_t> softmax_layer(const SimpleTensor<uint8_t> &src, float beta, int32_t axis, bool is_log); |
| 129 | template SimpleTensor<int8_t> softmax_layer(const SimpleTensor<int8_t> &src, float beta, int32_t axis, bool is_log); |
| 130 | |
Moritz Pflanzer | f6ad98a | 2017-07-21 17:19:58 +0100 | [diff] [blame] | 131 | } // namespace reference |
| 132 | } // namespace validation |
| 133 | } // namespace test |
| 134 | } // namespace arm_compute |