| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | module athena__dropblock3d_layer | ||
| 2 | !! Module containing implementation of a 3D dropblock layer | ||
| 3 | !! | ||
| 4 | !! This module implements DropBlock regularisation for 3D convolutional layers, | ||
| 5 | !! dropping contiguous 3D regions (blocks) instead of individual elements. | ||
| 6 | !! Extension of 2D DropBlock for volumetric/spatiotemporal data. | ||
| 7 | !! | ||
| 8 | !! Mathematical operation (training): | ||
| 9 | !! 1. Compute drop probability per spatial location: | ||
| 10 | !! gamma = p * (feature_size^3) / (block_size^3 * valid_positions) | ||
| 11 | !! 2. Sample Bernoulli mask M_i ~ Bernoulli(gamma) | ||
| 12 | !! 3. Expand mask to block_size x block_size x block_size blocks | ||
| 13 | !! 4. Apply and normalise: | ||
| 14 | !! y = x * M * (count_elements / count_ones) | ||
| 15 | !! | ||
| 16 | !! where block_size is the spatial extent of each dropped block in all 3 dims | ||
| 17 | !! | ||
| 18 | !! Inference: acts as identity (no dropout applied) | ||
| 19 | !! \[ | ||
| 20 | !! y_i = x_i | ||
| 21 | !! \] | ||
| 22 | !! | ||
| 23 | !! Benefits: Spatial/temporal coherence for 3D CNNs, better for video/volumetric, | ||
| 24 | !! removes spatiotemporal semantic information | ||
| 25 | !! Typical: block_size=5-7, keep_prob=0.9 for 3D ResNets | ||
| 26 | !! Reference: Ghiasi et al. (2018), NeurIPS - https://arxiv.org/abs/1810.12890 | ||
| 27 | use coreutils, only: real32, stop_program | ||
| 28 | use athena__base_layer, only: drop_layer_type, base_layer_type | ||
| 29 | use diffstruc, only: array_type, operator(*) | ||
| 30 | use athena__misc_types, only: & | ||
| 31 | onnx_node_type, onnx_initialiser_type, onnx_tensor_type | ||
| 32 | use athena__diffstruc_extd, only: merge_over_channels | ||
| 33 | implicit none | ||
| 34 | |||
| 35 | |||
| 36 | private | ||
| 37 | |||
| 38 | public :: dropblock3d_layer_type | ||
| 39 | public :: read_dropblock3d_layer | ||
| 40 | |||
| 41 | |||
| 42 | type, extends(drop_layer_type) :: dropblock3d_layer_type | ||
| 43 | !! Type for 3D dropblock layer with overloaded procedures | ||
| 44 | integer :: block_size, half | ||
| 45 | !! Block size and half block size | ||
| 46 | !! Block size is the width of the block to drop (typical = 5) | ||
| 47 | real(real32) :: gamma | ||
| 48 | !! Number of activation units to drop | ||
| 49 | integer :: num_channels | ||
| 50 | !! Number of channels | ||
| 51 | logical, allocatable, dimension(:,:,:) :: mask | ||
| 52 | !! Mask for dropblock | ||
| 53 | contains | ||
| 54 | procedure, pass(this) :: set_hyperparams => set_hyperparams_dropblock3d | ||
| 55 | !! Set hyperparameters for 3D dropblock layer | ||
| 56 | procedure, pass(this) :: init => init_dropblock3d | ||
| 57 | !! Initialise 3D dropblock layer | ||
| 58 | procedure, pass(this) :: print_to_unit => print_to_unit_dropblock3d | ||
| 59 | !! Print 3D dropblock layer to unit | ||
| 60 | procedure, pass(this) :: read => read_dropblock3d | ||
| 61 | !! Read 3D dropblock layer from file | ||
| 62 | |||
| 63 | procedure, pass(this) :: forward => forward_dropblock3d | ||
| 64 | !! Forward propagation derived type handler | ||
| 65 | |||
| 66 | procedure, pass(this) :: generate_mask => generate_bernoulli_mask | ||
| 67 | !! Generate Bernoulli mask | ||
| 68 | end type dropblock3d_layer_type | ||
| 69 | |||
| 70 | interface dropblock3d_layer_type | ||
| 71 | !! Interface for setting up the 3D dropblock layer | ||
| 72 | module function layer_setup( & | ||
| 73 | rate, block_size, & | ||
| 74 | input_shape, & | ||
| 75 | verbose ) result(layer) | ||
| 76 | !! Set up the 3D dropblock layer | ||
| 77 | real(real32), intent(in) :: rate | ||
| 78 | !! Drop rate | ||
| 79 | integer, intent(in) :: block_size | ||
| 80 | !! Block size | ||
| 81 | integer, dimension(:), optional, intent(in) :: input_shape | ||
| 82 | !! Input shape | ||
| 83 | integer, optional, intent(in) :: verbose | ||
| 84 | !! Verbosity level | ||
| 85 | type(dropblock3d_layer_type) :: layer | ||
| 86 | !! Instance of the 3D dropblock layer | ||
| 87 | end function layer_setup | ||
| 88 | end interface dropblock3d_layer_type | ||
| 89 | |||
| 90 | |||
| 91 | |||
| 92 | contains | ||
| 93 | |||
| 94 | !############################################################################### | ||
| 95 | 3 | module function layer_setup( & | |
| 96 | rate, block_size, & | ||
| 97 |
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3 | input_shape, & |
| 98 | 3 | verbose ) result(layer) | |
| 99 | !! Set up the 3D dropblock layer | ||
| 100 | implicit none | ||
| 101 | |||
| 102 | ! Arguments | ||
| 103 | real(real32), intent(in) :: rate | ||
| 104 | !! Drop rate | ||
| 105 | integer, intent(in) :: block_size | ||
| 106 | !! Block size | ||
| 107 | integer, dimension(:), optional, intent(in) :: input_shape | ||
| 108 | !! Input shape | ||
| 109 | integer, optional, intent(in) :: verbose | ||
| 110 | !! Verbosity level | ||
| 111 | |||
| 112 | type(dropblock3d_layer_type) :: layer | ||
| 113 | !! Instance of the 3D dropblock layer | ||
| 114 | |||
| 115 | ! Local variables | ||
| 116 | integer :: verbose_ = 0 | ||
| 117 | !! Verbosity level | ||
| 118 | |||
| 119 |
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3 | if(present(verbose)) verbose_ = verbose |
| 120 | |||
| 121 | !--------------------------------------------------------------------------- | ||
| 122 | ! Initialise hyperparameters | ||
| 123 | !--------------------------------------------------------------------------- | ||
| 124 | 3 | call layer%set_hyperparams(rate, block_size, verbose=verbose_) | |
| 125 | |||
| 126 | |||
| 127 | !--------------------------------------------------------------------------- | ||
| 128 | ! Initialise layer shape | ||
| 129 | !--------------------------------------------------------------------------- | ||
| 130 |
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3 | if(present(input_shape)) call layer%init(input_shape=input_shape) |
| 131 | |||
| 132 |
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6 | end function layer_setup |
| 133 | !############################################################################### | ||
| 134 | |||
| 135 | |||
| 136 | !############################################################################### | ||
| 137 | 4 | subroutine set_hyperparams_dropblock3d(this, rate, block_size, verbose) | |
| 138 | !! Set hyperparameters for 3D dropblock layer | ||
| 139 | implicit none | ||
| 140 | |||
| 141 | ! Arguments | ||
| 142 | class(dropblock3d_layer_type), intent(inout) :: this | ||
| 143 | !! Instance of the 3D dropblock layer | ||
| 144 | real(real32), intent(in) :: rate | ||
| 145 | !! Drop rate | ||
| 146 | integer, intent(in) :: block_size | ||
| 147 | !! Block size | ||
| 148 | integer, optional, intent(in) :: verbose | ||
| 149 | !! Verbosity level | ||
| 150 | |||
| 151 |
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4 | this%name = "dropblock3d" |
| 152 | 4 | this%type = "drop" | |
| 153 | 4 | this%input_rank = 4 | |
| 154 | 4 | this%output_rank = 4 | |
| 155 | |||
| 156 | 4 | this%rate = rate | |
| 157 | 4 | this%block_size = block_size | |
| 158 | 4 | this%half = (this%block_size-1)/2 | |
| 159 | |||
| 160 | 4 | end subroutine set_hyperparams_dropblock3d | |
| 161 | !############################################################################### | ||
| 162 | |||
| 163 | |||
| 164 | !############################################################################### | ||
| 165 |
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3 | subroutine init_dropblock3d(this, input_shape, verbose) |
| 166 | !! Initialise 3D dropblock layer | ||
| 167 | implicit none | ||
| 168 | |||
| 169 | ! Arguments | ||
| 170 | class(dropblock3d_layer_type), intent(inout) :: this | ||
| 171 | !! Instance of the 3D dropblock layer | ||
| 172 | integer, dimension(:), intent(in) :: input_shape | ||
| 173 | !! Input shape | ||
| 174 | integer, optional, intent(in) :: verbose | ||
| 175 | !! Verbosity level | ||
| 176 | |||
| 177 | ! Local variables | ||
| 178 | integer :: verbose_ = 0 | ||
| 179 | !! Verbosity level | ||
| 180 | |||
| 181 | !--------------------------------------------------------------------------- | ||
| 182 | ! initialise optional arguments | ||
| 183 | !--------------------------------------------------------------------------- | ||
| 184 |
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3 | if(present(verbose)) verbose_ = verbose |
| 185 | |||
| 186 | |||
| 187 | !--------------------------------------------------------------------------- | ||
| 188 | ! initialise input shape | ||
| 189 | !--------------------------------------------------------------------------- | ||
| 190 |
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3 | if(.not.allocated(this%input_shape)) call this%set_shape(input_shape) |
| 191 | |||
| 192 | |||
| 193 | !--------------------------------------------------------------------------- | ||
| 194 | ! set up number of channels, width, height | ||
| 195 | !--------------------------------------------------------------------------- | ||
| 196 |
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3 | this%num_channels = this%input_shape(4) |
| 197 |
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3 | allocate(this%output_shape(2)) |
| 198 |
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15 | this%output_shape = this%input_shape |
| 199 | |||
| 200 | |||
| 201 | !--------------------------------------------------------------------------- | ||
| 202 | ! set gamma | ||
| 203 | !--------------------------------------------------------------------------- | ||
| 204 | ! original paper uses keep_prob, we use drop_rate | ||
| 205 | ! drop_rate = 1 - keep_prob | ||
| 206 | this%gamma = ( this%rate/this%block_size**3._real32 ) * & | ||
| 207 | 6 | this%input_shape(1) / & | |
| 208 | 6 | (this%input_shape(1) - this%block_size + 1._real32) * & | |
| 209 | 6 | this%input_shape(2) / & | |
| 210 | 6 | (this%input_shape(2) - this%block_size + 1._real32) * & | |
| 211 | 6 | this%input_shape(3) / & | |
| 212 |
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3 | (this%input_shape(3) - this%block_size + 1._real32) |
| 213 | ✗ | allocate(this%mask( & | |
| 214 | 6 | this%input_shape(1), & | |
| 215 | 6 | this%input_shape(2), & | |
| 216 |
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777 | this%input_shape(3)), source=.true.) |
| 217 | |||
| 218 | |||
| 219 | !--------------------------------------------------------------------------- | ||
| 220 | ! generate mask | ||
| 221 | !--------------------------------------------------------------------------- | ||
| 222 | 3 | call this%generate_mask() | |
| 223 | |||
| 224 | |||
| 225 | !--------------------------------------------------------------------------- | ||
| 226 | ! Allocate arrays | ||
| 227 | !--------------------------------------------------------------------------- | ||
| 228 |
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3 | if(this%use_graph_input)then |
| 229 | call stop_program( & | ||
| 230 | "Graph input not supported for 3D dropblock layer" & | ||
| 231 | ✗ | ) | |
| 232 | ✗ | return | |
| 233 | end if | ||
| 234 |
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3 | if(allocated(this%output)) deallocate(this%output) |
| 235 |
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9 | allocate( this%output(1,1) ) |
| 236 | |||
| 237 | end subroutine init_dropblock3d | ||
| 238 | !############################################################################### | ||
| 239 | |||
| 240 | |||
| 241 | !############################################################################### | ||
| 242 | 3 | subroutine generate_bernoulli_mask(this) | |
| 243 | !! Generate Bernoulli mask | ||
| 244 | implicit none | ||
| 245 | |||
| 246 | ! Arguments | ||
| 247 | class(dropblock3d_layer_type), intent(inout) :: this | ||
| 248 | !! Instance of the 3D dropblock layer | ||
| 249 | |||
| 250 | ! Local variables | ||
| 251 | 3 | real(real32), allocatable, dimension(:,:,:) :: mask_real | |
| 252 | !! Real mask | ||
| 253 | integer :: i, j, k | ||
| 254 | !! Loop indices | ||
| 255 | integer, dimension(2) :: ilim, jlim, klim | ||
| 256 | !! Limits for mask | ||
| 257 | |||
| 258 | |||
| 259 | ! Generate Bernoulli mask | ||
| 260 | !--------------------------------------------------------------------------- | ||
| 261 | ! assume random number already seeded and don't need to again | ||
| 262 |
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3 | allocate(mask_real(size(this%mask,1), size(this%mask,2), size(this%mask,3))) |
| 263 | 3 | call random_number(mask_real) ! Generate random values in [0..1] | |
| 264 | |||
| 265 |
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777 | this%mask = .true. ! 1 = keep |
| 266 | |||
| 267 | !! Apply threshold to create binary mask | ||
| 268 | !--------------------------------------------------------------------------- | ||
| 269 |
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9 | do k = 1 + this%half, size(this%mask, dim=3) - this%half |
| 270 |
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21 | do j = 1 + this%half, size(this%mask, dim=2) - this%half |
| 271 |
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42 | do i = 1 + this%half, size(this%mask, dim=1) - this%half |
| 272 |
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36 | if(mask_real(i, j, k).lt.this%gamma)then |
| 273 | ilim(:) = [ & | ||
| 274 | max(i - this%half, lbound(this%mask,1)), & | ||
| 275 | ✗ | min(i + this%half, ubound(this%mask,1)) ] | |
| 276 | jlim(:) = [ & | ||
| 277 | max(j - this%half, lbound(this%mask,2)), & | ||
| 278 | ✗ | min(j + this%half, ubound(this%mask,2)) ] | |
| 279 | klim(:) = [ & | ||
| 280 | max(k - this%half, lbound(this%mask,3)), & | ||
| 281 | ✗ | min(k + this%half, ubound(this%mask,3)) ] | |
| 282 | ✗ | this%mask( & | |
| 283 | ilim(1):ilim(2), & | ||
| 284 | jlim(1):jlim(2), & | ||
| 285 | ✗ | klim(1):klim(2)) = .false. ! 0 = drop | |
| 286 | end if | ||
| 287 | end do | ||
| 288 | end do | ||
| 289 | end do | ||
| 290 | |||
| 291 |
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3 | end subroutine generate_bernoulli_mask |
| 292 | !############################################################################### | ||
| 293 | |||
| 294 | |||
| 295 | !##############################################################################! | ||
| 296 | ! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ! | ||
| 297 | !##############################################################################! | ||
| 298 | |||
| 299 | |||
| 300 | !############################################################################### | ||
| 301 | 1 | subroutine print_to_unit_dropblock3d(this, unit) | |
| 302 | !! Print 3D dropblock layer to unit | ||
| 303 | use coreutils, only: to_upper | ||
| 304 | implicit none | ||
| 305 | |||
| 306 | ! Arguments | ||
| 307 | class(dropblock3d_layer_type), intent(in) :: this | ||
| 308 | !! Instance of the 3D dropblock layer | ||
| 309 | integer, intent(in) :: unit | ||
| 310 | !! File unit | ||
| 311 | |||
| 312 | |||
| 313 | ! Write initial parameters | ||
| 314 | !--------------------------------------------------------------------------- | ||
| 315 | 1 | write(unit,'(3X,"INPUT_SHAPE = ",4(1X,I0))') this%input_shape | |
| 316 | 1 | write(unit,'(3X,"RATE = ",F0.9)') this%rate | |
| 317 | 1 | write(unit,'(3X,"BLOCK_SIZE = ",I0)') this%block_size | |
| 318 | |||
| 319 | 1 | end subroutine print_to_unit_dropblock3d | |
| 320 | !############################################################################### | ||
| 321 | |||
| 322 | |||
| 323 | !############################################################################### | ||
| 324 | 1 | subroutine read_dropblock3d(this, unit, verbose) | |
| 325 | !! Read 3D dropblock layer from file | ||
| 326 | use athena__tools_infile, only: assign_val, assign_vec | ||
| 327 | use coreutils, only: to_lower, to_upper, icount | ||
| 328 | implicit none | ||
| 329 | |||
| 330 | ! Arguments | ||
| 331 | class(dropblock3d_layer_type), intent(inout) :: this | ||
| 332 | !! Instance of the 3D dropblock layer | ||
| 333 | integer, intent(in) :: unit | ||
| 334 | !! File unit | ||
| 335 | integer, intent(in), optional :: verbose | ||
| 336 | !! Verbosity level | ||
| 337 | |||
| 338 | ! Local variables | ||
| 339 | integer :: stat, verbose_ = 0 | ||
| 340 | !! File status and verbosity level | ||
| 341 | integer :: itmp1 | ||
| 342 | !! Temporary integer | ||
| 343 | integer :: block_size | ||
| 344 | !! Block size | ||
| 345 | real(real32) :: rate | ||
| 346 | !! Drop rate | ||
| 347 | integer, dimension(4) :: input_shape | ||
| 348 | !! Input shape | ||
| 349 | character(256) :: buffer, tag, err_msg | ||
| 350 | !! Buffer, tag, and error message | ||
| 351 | |||
| 352 | |||
| 353 | ! Initialise optional arguments | ||
| 354 | !--------------------------------------------------------------------------- | ||
| 355 |
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1 | if(present(verbose)) verbose_ = verbose |
| 356 | |||
| 357 | |||
| 358 | ! Loop over tags in layer card | ||
| 359 | !--------------------------------------------------------------------------- | ||
| 360 | 3 | tag_loop: do | |
| 361 | |||
| 362 | ! Check for end of file | ||
| 363 | !------------------------------------------------------------------------ | ||
| 364 | 4 | read(unit,'(A)',iostat=stat) buffer | |
| 365 |
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4 | if(stat.ne.0)then |
| 366 | write(err_msg,'("file encountered error (EoF?) before END ",A)') & | ||
| 367 | ✗ | to_upper(this%name) | |
| 368 | ✗ | call stop_program(err_msg) | |
| 369 | ✗ | return | |
| 370 | end if | ||
| 371 |
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4 | if(trim(adjustl(buffer)).eq."") cycle tag_loop |
| 372 | |||
| 373 | ! Check for end of layer card | ||
| 374 | !------------------------------------------------------------------------ | ||
| 375 |
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8 | if(trim(adjustl(buffer)).eq."END "//to_upper(trim(this%name)))then |
| 376 | 1 | backspace(unit) | |
| 377 | 4 | exit tag_loop | |
| 378 | end if | ||
| 379 | |||
| 380 |
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3 | tag=trim(adjustl(buffer)) |
| 381 |
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3 | if(scan(buffer,"=").ne.0) tag=trim(tag(:scan(tag,"=")-1)) |
| 382 | |||
| 383 | ! Read parameters from save file | ||
| 384 | !------------------------------------------------------------------------ | ||
| 385 | 6 | select case(trim(tag)) | |
| 386 | case("INPUT_SHAPE") | ||
| 387 | 1 | call assign_vec(buffer, input_shape, itmp1) | |
| 388 | case("RATE") | ||
| 389 | 2 | call assign_val(buffer, rate, itmp1) | |
| 390 | case("BLOCK_SIZE") | ||
| 391 | 1 | call assign_val(buffer, block_size, itmp1) | |
| 392 | case default | ||
| 393 | ! Don't look for "e" due to scientific notation of numbers | ||
| 394 | ! ... i.e. exponent (E+00) | ||
| 395 | ✗ | if(scan(to_lower(trim(adjustl(buffer))),& | |
| 396 | 'abcdfghijklmnopqrstuvwxyz').eq.0)then | ||
| 397 | ✗ | cycle tag_loop | |
| 398 | ✗ | elseif(tag(:3).eq.'END')then | |
| 399 | ✗ | cycle tag_loop | |
| 400 | end if | ||
| 401 | write(err_msg,'("Unrecognised line in input file: ",A)') & | ||
| 402 | ✗ | trim(adjustl(buffer)) | |
| 403 | ✗ | call stop_program(err_msg) | |
| 404 |
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6 | return |
| 405 | end select | ||
| 406 | end do tag_loop | ||
| 407 | |||
| 408 | |||
| 409 | ! Set hyperparameters and initialise layer | ||
| 410 | !--------------------------------------------------------------------------- | ||
| 411 | call this%set_hyperparams( & | ||
| 412 | rate = rate, block_size = block_size, & | ||
| 413 | verbose = verbose_ & | ||
| 414 | 1 | ) | |
| 415 | 1 | call this%init(input_shape = input_shape) | |
| 416 | |||
| 417 | |||
| 418 | ! Check for end of layer card | ||
| 419 | !--------------------------------------------------------------------------- | ||
| 420 | 1 | read(unit,'(A)') buffer | |
| 421 |
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2 | if(trim(adjustl(buffer)).ne."END "//to_upper(trim(this%name)))then |
| 422 | ✗ | write(0,*) trim(adjustl(buffer)) | |
| 423 | ✗ | write(err_msg,'("END ",A," not where expected")') to_upper(this%name) | |
| 424 | ✗ | call stop_program(err_msg) | |
| 425 | 1 | return | |
| 426 | end if | ||
| 427 | |||
| 428 | end subroutine read_dropblock3d | ||
| 429 | !############################################################################### | ||
| 430 | |||
| 431 | |||
| 432 | !############################################################################### | ||
| 433 | 1 | function read_dropblock3d_layer(unit, verbose) result(layer) | |
| 434 | !! Read 3D dropblock layer from file and return layer | ||
| 435 | implicit none | ||
| 436 | integer, intent(in) :: unit | ||
| 437 | !! File unit | ||
| 438 | integer, optional, intent(in) :: verbose | ||
| 439 | !! Verbosity level | ||
| 440 | class(base_layer_type), allocatable :: layer | ||
| 441 | !! Instance of the 3D dropblock layer | ||
| 442 | |||
| 443 | integer :: verbose_ = 0 | ||
| 444 | !! Verbosity level | ||
| 445 | |||
| 446 |
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1 | if(present(verbose)) verbose_ = verbose |
| 447 |
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2 | allocate(layer, source=dropblock3d_layer_type(rate=0._real32, block_size=0)) |
| 448 | 1 | call layer%read(unit, verbose=verbose_) | |
| 449 | |||
| 450 | 2 | end function read_dropblock3d_layer | |
| 451 | !############################################################################### | ||
| 452 | |||
| 453 | |||
| 454 | !##############################################################################! | ||
| 455 | ! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ! | ||
| 456 | !##############################################################################! | ||
| 457 | |||
| 458 | |||
| 459 | !############################################################################### | ||
| 460 | ✗ | subroutine build_from_onnx_dropblock3d( & | |
| 461 | ✗ | this, node, initialisers, value_info, verbose & | |
| 462 | ) | ||
| 463 | !! Read ONNX attributes for 3D dropblock layer | ||
| 464 | implicit none | ||
| 465 | |||
| 466 | ! Arguments | ||
| 467 | class(dropblock3d_layer_type), intent(inout) :: this | ||
| 468 | !! Instance of the 3D dropblock layer | ||
| 469 | type(onnx_node_type), intent(in) :: node | ||
| 470 | !! ONNX node information | ||
| 471 | type(onnx_initialiser_type), dimension(:), intent(in) :: initialisers | ||
| 472 | !! ONNX initialiser information | ||
| 473 | type(onnx_tensor_type), dimension(:), intent(in) :: value_info | ||
| 474 | !! ONNX value info | ||
| 475 | integer, intent(in) :: verbose | ||
| 476 | !! Verbosity level | ||
| 477 | |||
| 478 | ! Local variables | ||
| 479 | integer :: i | ||
| 480 | !! Loop index | ||
| 481 | real(real32) :: rate | ||
| 482 | !! Dropout rate | ||
| 483 | integer :: block_size | ||
| 484 | !! Block size | ||
| 485 | character(256) :: val | ||
| 486 | !! Attribute value | ||
| 487 | |||
| 488 | ! Set default values | ||
| 489 | ✗ | rate = 0.1_real32 | |
| 490 | ✗ | block_size = 7 | |
| 491 | |||
| 492 | ! Parse ONNX attributes | ||
| 493 | ✗ | do i = 1, size(node%attributes) | |
| 494 | ✗ | val = node%attributes(i)%val | |
| 495 | ✗ | select case(trim(adjustl(node%attributes(i)%name))) | |
| 496 | case("drop_prob") | ||
| 497 | ✗ | read(val,*) rate | |
| 498 | case("block_size") | ||
| 499 | ✗ | read(val,*) block_size | |
| 500 | case default | ||
| 501 | ! Do nothing | ||
| 502 | write(0,*) "WARNING: Unrecognised attribute in ONNX & | ||
| 503 | ✗ | &DROPBLOCK3D layer: ", trim(adjustl(node%attributes(i)%name)) | |
| 504 | end select | ||
| 505 | end do | ||
| 506 | |||
| 507 | ! Check size of initialisers is zero | ||
| 508 | ✗ | if(size(initialisers).ne.0)then | |
| 509 | ✗ | write(0,*) "WARNING: initialisers not used for ONNX DROPBLOCK3D layer" | |
| 510 | end if | ||
| 511 | |||
| 512 | call this%set_hyperparams( & | ||
| 513 | rate = rate, & | ||
| 514 | block_size = block_size, & | ||
| 515 | verbose = verbose & | ||
| 516 | ✗ | ) | |
| 517 | |||
| 518 | ✗ | end subroutine build_from_onnx_dropblock3d | |
| 519 | !############################################################################### | ||
| 520 | |||
| 521 | |||
| 522 | !##############################################################################! | ||
| 523 | ! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ! | ||
| 524 | !##############################################################################! | ||
| 525 | |||
| 526 | |||
| 527 | !############################################################################### | ||
| 528 |
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1 | subroutine forward_dropblock3d(this, input) |
| 529 | !! Forward propagation | ||
| 530 | implicit none | ||
| 531 | |||
| 532 | ! Arguments | ||
| 533 | class(dropblock3d_layer_type), intent(inout) :: this | ||
| 534 | !! Instance of the 3D dropblock layer | ||
| 535 | class(array_type), dimension(:,:), intent(in) :: input | ||
| 536 | !! Input values | ||
| 537 | |||
| 538 | ! Local variables | ||
| 539 | real(real32) :: rtmp1 | ||
| 540 | !! Temporary variable | ||
| 541 | type(array_type), pointer :: ptr | ||
| 542 | !! Pointer array | ||
| 543 | |||
| 544 | |||
| 545 | 1 | rtmp1 = 1._real32 - this%rate | |
| 546 | 1 | select case(this%inference) | |
| 547 | case(.true.) | ||
| 548 | ! Do not perform the drop operation | ||
| 549 | ✗ | ptr => input(1,1) * rtmp1 | |
| 550 | case default | ||
| 551 | ! Perform the drop operation | ||
| 552 | 1 | rtmp1 = 1._real32 / rtmp1 | |
| 553 | ptr => merge_over_channels( & | ||
| 554 | ✗ | input(1,1), 0._real32, & | |
| 555 | ✗ | reshape(this%mask, shape = [product(shape(this%mask)), 1]) & | |
| 556 |
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6 | ) * rtmp1 |
| 557 | end select | ||
| 558 |
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1 | call this%output(1,1)%assign_and_deallocate_source(ptr) |
| 559 |
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1 | this%output(1,1)%is_temporary = .false. |
| 560 | |||
| 561 | 1 | end subroutine forward_dropblock3d | |
| 562 | !############################################################################### | ||
| 563 | |||
| 564 |
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28 | end module athena__dropblock3d_layer |
| 565 |