Georgios Pinitas | d976958 | 2017-08-03 10:19:40 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2017 ARM Limited. |
| 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 | */ |
Giorgio Arena | 04a8f8c | 2017-11-23 11:45:24 +0000 | [diff] [blame] | 24 | #include "L2NormalizeLayer.h" |
Georgios Pinitas | d976958 | 2017-08-03 10:19:40 +0100 | [diff] [blame] | 25 | #include "ReductionOperation.h" |
| 26 | |
Moritz Pflanzer | a09de0c | 2017-09-01 20:41:12 +0100 | [diff] [blame] | 27 | #include "tests/validation/Helpers.h" |
Georgios Pinitas | d976958 | 2017-08-03 10:19:40 +0100 | [diff] [blame] | 28 | |
| 29 | #include <algorithm> |
| 30 | #include <cmath> |
| 31 | |
| 32 | namespace arm_compute |
| 33 | { |
| 34 | namespace test |
| 35 | { |
| 36 | namespace validation |
| 37 | { |
| 38 | namespace reference |
| 39 | { |
| 40 | namespace |
| 41 | { |
| 42 | TensorShape get_output_shape(TensorShape shape, unsigned int axis) |
| 43 | { |
| 44 | TensorShape output_shape(shape); |
| 45 | output_shape.set(axis, 1); |
| 46 | return output_shape; |
| 47 | } |
| 48 | } // namespace |
| 49 | |
| 50 | template <typename T> |
| 51 | SimpleTensor<T> l2_normalize(const SimpleTensor<T> &src, unsigned int axis, float epsilon) |
| 52 | { |
| 53 | // Create reference |
| 54 | SimpleTensor<T> dst{ src.shape(), src.data_type() }; |
| 55 | |
| 56 | // Reduce across given axis |
| 57 | SimpleTensor<T> sum = reduction_operation(src, get_output_shape(src.shape(), axis), axis, ReductionOperation::SUM_SQUARE); |
| 58 | |
| 59 | // Compute reference |
| 60 | const int elems = src.shape()[axis]; |
| 61 | const int upper_dims = src.shape().total_size_upper(axis + 1); |
| 62 | |
| 63 | for(int du = 0; du < upper_dims; ++du) |
| 64 | { |
| 65 | if(axis == 0) |
| 66 | { |
| 67 | const T *src_row_ptr = src.data() + du * elems; |
| 68 | T *dst_row_ptr = dst.data() + du * elems; |
| 69 | const T normalization_value = std::sqrt(std::max(sum[du], epsilon)); |
| 70 | std::transform(src_row_ptr, src_row_ptr + elems, dst_row_ptr, [normalization_value](T val) |
| 71 | { |
| 72 | return val / normalization_value; |
| 73 | }); |
| 74 | } |
| 75 | else |
| 76 | { |
| 77 | ARM_COMPUTE_ERROR("Unsupported normalization axis"); |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | return dst; |
| 82 | } |
| 83 | |
| 84 | template SimpleTensor<float> l2_normalize(const SimpleTensor<float> &src, unsigned int axis, float epsilon); |
| 85 | } // namespace reference |
| 86 | } // namespace validation |
| 87 | } // namespace test |
| 88 | } // namespace arm_compute |