| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | !!!############################################################################# | ||
| 2 | !!! Code written by Ned Thaddeus Taylor | ||
| 3 | !!! Code part of the ATHENA library - a feedforward neural network library | ||
| 4 | !!!############################################################################# | ||
| 5 | !!! module contains implementation of a 1D flattening layer | ||
| 6 | !!!############################################################################# | ||
| 7 | module flatten1d_layer | ||
| 8 | use constants, only: real12 | ||
| 9 | use base_layer, only: flatten_layer_type | ||
| 10 | implicit none | ||
| 11 | |||
| 12 | |||
| 13 | type, extends(flatten_layer_type) :: flatten1d_layer_type | ||
| 14 | real(real12), allocatable, dimension(:,:,:) :: di | ||
| 15 | contains | ||
| 16 | procedure, pass(this) :: init => init_flatten1d | ||
| 17 | procedure, pass(this) :: set_batch_size => set_batch_size_flatten1d | ||
| 18 | procedure, pass(this) :: forward => forward_rank | ||
| 19 | procedure, pass(this) :: backward => backward_rank | ||
| 20 | end type flatten1d_layer_type | ||
| 21 | |||
| 22 | interface flatten1d_layer_type | ||
| 23 | module function layer_setup(input_shape, batch_size, num_addit_outputs) & | ||
| 24 | result(layer) | ||
| 25 | integer, dimension(:), optional, intent(in) :: input_shape | ||
| 26 | integer, optional, intent(in) :: batch_size | ||
| 27 | integer, optional, intent(in) :: num_addit_outputs | ||
| 28 | type(flatten1d_layer_type) :: layer | ||
| 29 | end function layer_setup | ||
| 30 | end interface flatten1d_layer_type | ||
| 31 | |||
| 32 | |||
| 33 | private | ||
| 34 | public :: flatten1d_layer_type | ||
| 35 | |||
| 36 | |||
| 37 | contains | ||
| 38 | |||
| 39 | !!!############################################################################# | ||
| 40 | !!! forward propagation assumed rank handler | ||
| 41 | !!!############################################################################# | ||
| 42 | 1 | pure subroutine forward_rank(this, input) | |
| 43 | implicit none | ||
| 44 | class(flatten1d_layer_type), intent(inout) :: this | ||
| 45 | real(real12), dimension(..), intent(in) :: input | ||
| 46 | |||
| 47 | select rank(input); rank(3) | ||
| 48 | 8 | this%output(:this%num_outputs, :this%batch_size) = & | |
| 49 |
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|
28 | reshape(input, [this%num_outputs, this%batch_size]) |
| 50 | end select | ||
| 51 | 1 | end subroutine forward_rank | |
| 52 | !!!############################################################################# | ||
| 53 | |||
| 54 | |||
| 55 | !!!############################################################################# | ||
| 56 | !!! backward propagation assumed rank handler | ||
| 57 | !!!############################################################################# | ||
| 58 | 1 | pure subroutine backward_rank(this, input, gradient) | |
| 59 | implicit none | ||
| 60 | class(flatten1d_layer_type), intent(inout) :: this | ||
| 61 | real(real12), dimension(..), intent(in) :: input | ||
| 62 | real(real12), dimension(..), intent(in) :: gradient | ||
| 63 | |||
| 64 | select rank(gradient); rank(2) | ||
| 65 |
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|
60 | this%di = reshape(gradient(:this%num_outputs,:), shape(this%di)) |
| 66 | end select | ||
| 67 | 1 | end subroutine backward_rank | |
| 68 | !!!############################################################################# | ||
| 69 | |||
| 70 | |||
| 71 | !!!##########################################################################!!! | ||
| 72 | !!! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * !!! | ||
| 73 | !!!##########################################################################!!! | ||
| 74 | |||
| 75 | |||
| 76 | !!!############################################################################# | ||
| 77 | !!! set up layer | ||
| 78 | !!!############################################################################# | ||
| 79 |
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1 | module function layer_setup(input_shape, batch_size, num_addit_outputs) & |
| 80 | result(layer) | ||
| 81 | implicit none | ||
| 82 | integer, dimension(:), optional, intent(in) :: input_shape | ||
| 83 | integer, optional, intent(in) :: batch_size | ||
| 84 | integer, optional, intent(in) :: num_addit_outputs | ||
| 85 | |||
| 86 | type(flatten1d_layer_type) :: layer | ||
| 87 | |||
| 88 | |||
| 89 |
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1 | layer%name = "flatten1d" |
| 90 | 1 | layer%input_rank = 2 | |
| 91 | !!-------------------------------------------------------------------------- | ||
| 92 | !! initialise batch size | ||
| 93 | !!-------------------------------------------------------------------------- | ||
| 94 |
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1 | if(present(batch_size)) layer%batch_size = batch_size |
| 95 | |||
| 96 | |||
| 97 | !!-------------------------------------------------------------------------- | ||
| 98 | !! initialise layer shape | ||
| 99 | !!-------------------------------------------------------------------------- | ||
| 100 |
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1 | if(present(num_addit_outputs)) layer%num_addit_outputs = num_addit_outputs |
| 101 |
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1 | if(present(input_shape)) call layer%init(input_shape=input_shape) |
| 102 | |||
| 103 |
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2 | end function layer_setup |
| 104 | !!!############################################################################# | ||
| 105 | |||
| 106 | |||
| 107 | !!!############################################################################# | ||
| 108 | !!! initialise layer | ||
| 109 | !!!############################################################################# | ||
| 110 |
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1 | subroutine init_flatten1d(this, input_shape, batch_size, verbose) |
| 111 | implicit none | ||
| 112 | class(flatten1d_layer_type), intent(inout) :: this | ||
| 113 | integer, dimension(:), intent(in) :: input_shape | ||
| 114 | integer, optional, intent(in) :: batch_size | ||
| 115 | integer, optional, intent(in) :: verbose | ||
| 116 | |||
| 117 | integer :: verbose_ = 0 | ||
| 118 | |||
| 119 | |||
| 120 | !!-------------------------------------------------------------------------- | ||
| 121 | !! initialise optional arguments | ||
| 122 | !!-------------------------------------------------------------------------- | ||
| 123 |
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1 | if(present(verbose)) verbose_ = verbose |
| 124 |
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1 | if(present(batch_size)) this%batch_size = batch_size |
| 125 | |||
| 126 | |||
| 127 | !!-------------------------------------------------------------------------- | ||
| 128 | !! initialise input shape | ||
| 129 | !!-------------------------------------------------------------------------- | ||
| 130 |
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1 | if(.not.allocated(this%input_shape)) call this%set_shape(input_shape) |
| 131 | |||
| 132 |
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3 | this%num_outputs = product(this%input_shape) |
| 133 |
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2 | this%output_shape = [this%num_outputs] |
| 134 | |||
| 135 | |||
| 136 | !!-------------------------------------------------------------------------- | ||
| 137 | !! initialise batch size-dependent arrays | ||
| 138 | !!-------------------------------------------------------------------------- | ||
| 139 |
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1 | if(this%batch_size.gt.0) call this%set_batch_size(this%batch_size) |
| 140 | |||
| 141 | 1 | end subroutine init_flatten1d | |
| 142 | !!!############################################################################# | ||
| 143 | |||
| 144 | |||
| 145 | !!!############################################################################# | ||
| 146 | !!! set batch size | ||
| 147 | !!!############################################################################# | ||
| 148 | 1 | subroutine set_batch_size_flatten1d(this, batch_size, verbose) | |
| 149 | implicit none | ||
| 150 | class(flatten1d_layer_type), intent(inout) :: this | ||
| 151 | integer, intent(in) :: batch_size | ||
| 152 | integer, optional, intent(in) :: verbose | ||
| 153 | |||
| 154 | integer :: verbose_ = 0 | ||
| 155 | |||
| 156 | |||
| 157 | !!-------------------------------------------------------------------------- | ||
| 158 | !! initialise optional arguments | ||
| 159 | !!-------------------------------------------------------------------------- | ||
| 160 |
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1 | if(present(verbose)) verbose_ = verbose |
| 161 | 1 | this%batch_size = batch_size | |
| 162 | |||
| 163 | |||
| 164 | !!-------------------------------------------------------------------------- | ||
| 165 | !! allocate arrays | ||
| 166 | !!-------------------------------------------------------------------------- | ||
| 167 |
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1 | if(allocated(this%input_shape))then |
| 168 |
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1 | if(allocated(this%output)) deallocate(this%output) |
| 169 | ✗ | allocate(this%output( & | |
| 170 | (this%num_outputs + this%num_addit_outputs), this%batch_size ), & | ||
| 171 |
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26 | source=0._real12) |
| 172 |
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1 | if(allocated(this%di)) deallocate(this%di) |
| 173 | ✗ | allocate(this%di( & | |
| 174 | 2 | this%input_shape(1), & | |
| 175 | 2 | this%input_shape(2), this%batch_size), & | |
| 176 |
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|
29 | source=0._real12) |
| 177 | end if | ||
| 178 | |||
| 179 | 1 | end subroutine set_batch_size_flatten1d | |
| 180 | !!!############################################################################# | ||
| 181 | |||
| 182 |
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|
2 | end module flatten1d_layer |
| 183 | !!!############################################################################# | ||
| 184 |