| @@ -0,0 +1,106 @@ | |||
| # Googlenet Example | |||
| ## Description | |||
| This example is for Googlenet model training and evaluation. | |||
| ## Requirements | |||
| - Install [MindSpore](https://www.mindspore.cn/install/en). | |||
| - Download the dataset [CIFAR-10](http://www.cs.toronto.edu/~kriz/cifar-10-binary.tar.gz). | |||
| > Unzip the CIFAR-10 dataset to any path you want and the folder structure should be as follows: | |||
| > ``` | |||
| > . | |||
| > ├── cifar-10-batches-bin # train dataset | |||
| > └── cifar-10-verify-bin # infer dataset | |||
| > ``` | |||
| ## Running the Example | |||
| ### Training | |||
| ``` | |||
| python train.py --data_path=your_data_path --device_id=6 > out.train.log 2>&1 & | |||
| ``` | |||
| The python command above will run in the background, you can view the results through the file `out.train.log`. | |||
| After training, you'll get some checkpoint files under the script folder by default. | |||
| You will get the loss value as following: | |||
| ``` | |||
| # grep "loss is " out.train.log | |||
| epoch: 1 step: 390, loss is 1.4842823 | |||
| epcoh: 2 step: 390, loss is 1.0897788 | |||
| ... | |||
| ``` | |||
| ### Evaluation | |||
| ``` | |||
| python eval.py --data_path=your_data_path --device_id=6 --checkpoint_path=./train_googlenet_cifar10-125-390.ckpt > out.eval.log 2>&1 & | |||
| ``` | |||
| The above python command will run in the background, you can view the results through the file `out.eval.log`. | |||
| You will get the accuracy as following: | |||
| ``` | |||
| # grep "result: " out.eval.log | |||
| result: {'acc': 0.934} | |||
| ``` | |||
| ### Distribute Training | |||
| ``` | |||
| sh run_distribute_train.sh rank_table.json your_data_path | |||
| ``` | |||
| The above shell script will run distribute training in the background, you can view the results through the file `train_parallel[X]/log`. | |||
| You will get the loss value as following: | |||
| ``` | |||
| # grep "result: " train_parallel*/log | |||
| train_parallel0/log:epoch: 1 step: 48, loss is 1.4302931 | |||
| train_parallel0/log:epcoh: 2 step: 48, loss is 1.4023874 | |||
| ... | |||
| train_parallel1/log:epoch: 1 step: 48, loss is 1.3458025 | |||
| train_parallel1/log:epcoh: 2 step: 48, loss is 1.3729336 | |||
| ... | |||
| ... | |||
| ``` | |||
| > About rank_table.json, you can refer to the [distributed training tutorial](https://www.mindspore.cn/tutorial/en/master/advanced_use/distributed_training.html). | |||
| ## Usage: | |||
| ### Training | |||
| ``` | |||
| usage: train.py [--device_target TARGET][--data_path DATA_PATH] | |||
| [--device_id DEVICE_ID] | |||
| parameters/options: | |||
| --device_target the training backend type, default is Ascend. | |||
| --data_path the storage path of dataset | |||
| --device_id the device which used to train model. | |||
| ``` | |||
| ### Evaluation | |||
| ``` | |||
| usage: eval.py [--device_target TARGET][--data_path DATA_PATH] | |||
| [--device_id DEVICE_ID][--checkpoint_path CKPT_PATH] | |||
| parameters/options: | |||
| --device_target the evaluation backend type, default is Ascend. | |||
| --data_path the storage path of datasetd | |||
| --device_id the device which used to evaluate model. | |||
| --checkpoint_path the checkpoint file path used to evaluate model. | |||
| ``` | |||
| ### Distribute Training | |||
| ``` | |||
| Usage: sh run_distribute_train.sh [MINDSPORE_HCCL_CONFIG_PATH] [DATA_PATH] | |||
| parameters/options: | |||
| MINDSPORE_HCCL_CONFIG_PATH HCCL configuration file path. | |||
| DATA_PATH the storage path of dataset. | |||
| ``` | |||
| @@ -0,0 +1,31 @@ | |||
| # Copyright 2020 Huawei Technologies Co., Ltd | |||
| # | |||
| # Licensed under the Apache License, Version 2.0 (the "License"); | |||
| # 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. | |||
| # ============================================================================ | |||
| """ | |||
| network config setting, will be used in main.py | |||
| """ | |||
| from easydict import EasyDict as edict | |||
| cifar_cfg = edict({ | |||
| 'num_classes': 10, | |||
| 'lr_init': 0.1, | |||
| 'batch_size': 128, | |||
| 'epoch_size': 125, | |||
| 'momentum': 0.9, | |||
| 'weight_decay': 5e-4, | |||
| 'buffer_size': 10, | |||
| 'image_height': 224, | |||
| 'image_width': 224, | |||
| 'keep_checkpoint_max': 10 | |||
| }) | |||
| @@ -0,0 +1,67 @@ | |||
| # Copyright 2020 Huawei Technologies Co., Ltd | |||
| # | |||
| # Licensed under the Apache License, Version 2.0 (the "License"); | |||
| # 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. | |||
| # ============================================================================ | |||
| """ | |||
| Data operations, will be used in train.py and eval.py | |||
| """ | |||
| import os | |||
| import mindspore.common.dtype as mstype | |||
| import mindspore.dataset as ds | |||
| import mindspore.dataset.transforms.c_transforms as C | |||
| import mindspore.dataset.transforms.vision.c_transforms as vision | |||
| from config import cifar_cfg as cfg | |||
| def create_dataset(data_home, repeat_num=1, training=True): | |||
| """Data operations.""" | |||
| ds.config.set_seed(1) | |||
| data_dir = os.path.join(data_home, "cifar-10-batches-bin") | |||
| if not training: | |||
| data_dir = os.path.join(data_home, "cifar-10-verify-bin") | |||
| rank_size = int(os.environ.get("RANK_SIZE")) if os.environ.get("RANK_SIZE") else None | |||
| rank_id = int(os.environ.get("RANK_ID")) if os.environ.get("RANK_ID") else None | |||
| data_set = ds.Cifar10Dataset(data_dir, num_shards=rank_size, shard_id=rank_id) | |||
| resize_height = cfg.image_height | |||
| resize_width = cfg.image_width | |||
| # define map operations | |||
| random_crop_op = vision.RandomCrop((32, 32), (4, 4, 4, 4)) # padding_mode default CONSTANT | |||
| random_horizontal_op = vision.RandomHorizontalFlip() | |||
| resize_op = vision.Resize((resize_height, resize_width)) # interpolation default BILINEAR | |||
| normalize_op = vision.Normalize((0.4914, 0.4822, 0.4465), (0.2023, 0.1994, 0.2010)) | |||
| changeswap_op = vision.HWC2CHW() | |||
| type_cast_op = C.TypeCast(mstype.int32) | |||
| c_trans = [] | |||
| if training: | |||
| c_trans = [random_crop_op, random_horizontal_op] | |||
| c_trans += [resize_op, normalize_op, changeswap_op] | |||
| # apply map operations on images | |||
| data_set = data_set.map(input_columns="label", operations=type_cast_op) | |||
| data_set = data_set.map(input_columns="image", operations=c_trans) | |||
| # apply repeat operations | |||
| data_set = data_set.repeat(repeat_num) | |||
| # apply shuffle operations | |||
| data_set = data_set.shuffle(buffer_size=10) | |||
| # apply batch operations | |||
| data_set = data_set.batch(batch_size=cfg.batch_size, drop_remainder=True) | |||
| return data_set | |||
| @@ -0,0 +1,56 @@ | |||
| # Copyright 2020 Huawei Technologies Co., Ltd | |||
| # | |||
| # Licensed under the Apache License, Version 2.0 (the "License"); | |||
| # 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. | |||
| # ============================================================================ | |||
| """ | |||
| ##############test googlenet example on cifar10################# | |||
| python eval.py --data_path=$DATA_HOME --device_id=$DEVICE_ID | |||
| """ | |||
| import argparse | |||
| import mindspore.nn as nn | |||
| from mindspore import context | |||
| from mindspore.model_zoo.googlenet import GooGLeNet | |||
| from mindspore.nn.optim.momentum import Momentum | |||
| from mindspore.train.model import Model | |||
| from mindspore.train.serialization import load_checkpoint, load_param_into_net | |||
| import dataset | |||
| from config import cifar_cfg as cfg | |||
| if __name__ == '__main__': | |||
| parser = argparse.ArgumentParser(description='Cifar10 classification') | |||
| parser.add_argument('--device_target', type=str, default='Ascend', choices=['Ascend', 'GPU'], | |||
| help='device where the code will be implemented. (Default: Ascend)') | |||
| parser.add_argument('--data_path', type=str, default='./cifar', help='path where the dataset is saved') | |||
| parser.add_argument('--checkpoint_path', type=str, default=None, help='checkpoint file path.') | |||
| parser.add_argument('--device_id', type=int, default=None, help='device id of GPU or Ascend. (Default: None)') | |||
| args_opt = parser.parse_args() | |||
| context.set_context(mode=context.GRAPH_MODE, device_target=args_opt.device_target) | |||
| context.set_context(device_id=args_opt.device_id) | |||
| context.set_context(enable_mem_reuse=True) | |||
| net = GooGLeNet(num_classes=cfg.num_classes) | |||
| opt = Momentum(filter(lambda x: x.requires_grad, net.get_parameters()), 0.01, cfg.momentum, | |||
| weight_decay=cfg.weight_decay) | |||
| loss = nn.SoftmaxCrossEntropyWithLogits(sparse=True, reduction='mean', is_grad=False) | |||
| model = Model(net, loss_fn=loss, optimizer=opt, metrics={'acc'}) | |||
| param_dict = load_checkpoint(args_opt.checkpoint_path) | |||
| load_param_into_net(net, param_dict) | |||
| net.set_train(False) | |||
| dataset = dataset.create_dataset(args_opt.data_path, 1, False) | |||
| res = model.eval(dataset) | |||
| print("result: ", res) | |||
| @@ -0,0 +1,53 @@ | |||
| #!/bin/bash | |||
| # Copyright 2020 Huawei Technologies Co., Ltd | |||
| # | |||
| # Licensed under the Apache License, Version 2.0 (the "License"); | |||
| # 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. | |||
| # ============================================================================ | |||
| if [ $# != 2 ] | |||
| then | |||
| echo "Usage: sh run_distribute_train.sh [MINDSPORE_HCCL_CONFIG_PATH] [DATA_PATH]" | |||
| exit 1 | |||
| fi | |||
| if [ ! -f $1 ] | |||
| then | |||
| echo "error: MINDSPORE_HCCL_CONFIG_PATH=$1 is not a file" | |||
| exit 1 | |||
| fi | |||
| if [ ! -d $2 ] | |||
| then | |||
| echo "error: DATA_PATH=$2 is not a directory" | |||
| exit 1 | |||
| fi | |||
| ulimit -u unlimited | |||
| export DEVICE_NUM=8 | |||
| export RANK_SIZE=8 | |||
| export MINDSPORE_HCCL_CONFIG_PATH=$1 | |||
| for((i=0; i<${DEVICE_NUM}; i++)) | |||
| do | |||
| export DEVICE_ID=$i | |||
| export RANK_ID=$i | |||
| rm -rf ./train_parallel$i | |||
| mkdir ./train_parallel$i | |||
| cp *.py ./train_parallel$i | |||
| cp *.sh ./train_parallel$i | |||
| cd ./train_parallel$i || exit | |||
| echo "start training for rank $RANK_ID, device $DEVICE_ID" | |||
| env > env.log | |||
| python train.py --data_path=$2 --device_id=$i &> log & | |||
| cd .. | |||
| done | |||
| @@ -0,0 +1,100 @@ | |||
| # Copyright 2020 Huawei Technologies Co., Ltd | |||
| # | |||
| # Licensed under the Apache License, Version 2.0 (the "License"); | |||
| # 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. | |||
| # ============================================================================ | |||
| """ | |||
| #################train googlent example on cifar10######################## | |||
| python train.py --data_path=$DATA_HOME --device_id=$DEVICE_ID | |||
| """ | |||
| import argparse | |||
| import os | |||
| import random | |||
| import numpy as np | |||
| import mindspore.nn as nn | |||
| from mindspore import Tensor | |||
| from mindspore import context | |||
| from mindspore.communication.management import init | |||
| from mindspore.model_zoo.googlenet import GooGLeNet | |||
| from mindspore.nn.optim.momentum import Momentum | |||
| from mindspore.train.callback import ModelCheckpoint, CheckpointConfig, LossMonitor, TimeMonitor | |||
| from mindspore.train.model import Model, ParallelMode | |||
| from dataset import create_dataset | |||
| from config import cifar_cfg as cfg | |||
| random.seed(1) | |||
| np.random.seed(1) | |||
| def lr_steps(global_step, lr_max=None, total_epochs=None, steps_per_epoch=None): | |||
| """Set learning rate.""" | |||
| lr_each_step = [] | |||
| total_steps = steps_per_epoch * total_epochs | |||
| decay_epoch_index = [0.3 * total_steps, 0.6 * total_steps, 0.8 * total_steps] | |||
| for i in range(total_steps): | |||
| if i < decay_epoch_index[0]: | |||
| lr_each_step.append(lr_max) | |||
| elif i < decay_epoch_index[1]: | |||
| lr_each_step.append(lr_max * 0.1) | |||
| elif i < decay_epoch_index[2]: | |||
| lr_each_step.append(lr_max * 0.01) | |||
| else: | |||
| lr_each_step.append(lr_max * 0.001) | |||
| current_step = global_step | |||
| lr_each_step = np.array(lr_each_step).astype(np.float32) | |||
| learning_rate = lr_each_step[current_step:] | |||
| return learning_rate | |||
| if __name__ == '__main__': | |||
| parser = argparse.ArgumentParser(description='Cifar10 classification') | |||
| parser.add_argument('--device_target', type=str, default='Ascend', choices=['Ascend', 'GPU'], | |||
| help='device where the code will be implemented. (Default: Ascend)') | |||
| parser.add_argument('--data_path', type=str, default='./cifar', help='path where the dataset is saved') | |||
| parser.add_argument('--device_id', type=int, default=None, help='device id of GPU or Ascend. (Default: None)') | |||
| args_opt = parser.parse_args() | |||
| context.set_context(mode=context.GRAPH_MODE, device_target=args_opt.device_target) | |||
| context.set_context(device_id=args_opt.device_id) | |||
| context.set_context(enable_task_sink=True) | |||
| context.set_context(enable_loop_sink=True) | |||
| context.set_context(enable_mem_reuse=True) | |||
| device_num = int(os.environ.get("DEVICE_NUM", 1)) | |||
| if device_num > 1: | |||
| context.reset_auto_parallel_context() | |||
| context.set_auto_parallel_context(device_num=device_num, parallel_mode=ParallelMode.DATA_PARALLEL, | |||
| mirror_mean=True) | |||
| init() | |||
| dataset = create_dataset(args_opt.data_path, cfg.epoch_size) | |||
| batch_num = dataset.get_dataset_size() | |||
| net = GooGLeNet(num_classes=cfg.num_classes) | |||
| lr = lr_steps(0, lr_max=cfg.lr_init, total_epochs=cfg.epoch_size, steps_per_epoch=batch_num) | |||
| opt = Momentum(filter(lambda x: x.requires_grad, net.get_parameters()), Tensor(lr), cfg.momentum, | |||
| weight_decay=cfg.weight_decay) | |||
| loss = nn.SoftmaxCrossEntropyWithLogits(sparse=True, reduction='mean', is_grad=False) | |||
| model = Model(net, loss_fn=loss, optimizer=opt, metrics={'acc'}, | |||
| amp_level="O2", keep_batchnorm_fp32=False, loss_scale_manager=None) | |||
| config_ck = CheckpointConfig(save_checkpoint_steps=batch_num * 5, keep_checkpoint_max=cfg.keep_checkpoint_max) | |||
| time_cb = TimeMonitor(data_size=batch_num) | |||
| ckpoint_cb = ModelCheckpoint(prefix="train_googlenet_cifar10", directory="./", config=config_ck) | |||
| loss_cb = LossMonitor() | |||
| model.train(cfg.epoch_size, dataset, callbacks=[time_cb, ckpoint_cb, loss_cb]) | |||
| print("train success") | |||
| @@ -0,0 +1,143 @@ | |||
| # Copyright 2020 Huawei Technologies Co., Ltd | |||
| # | |||
| # Licensed under the Apache License, Version 2.0 (the "License"); | |||
| # 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. | |||
| # ============================================================================ | |||
| """GoogleNet""" | |||
| import mindspore.nn as nn | |||
| from mindspore.common.initializer import TruncatedNormal | |||
| from mindspore.ops import operations as P | |||
| def weight_variable(): | |||
| """Weight variable.""" | |||
| return TruncatedNormal(0.02) | |||
| class Conv2dBlock(nn.Cell): | |||
| """ | |||
| Basic convolutional block | |||
| Args: | |||
| in_channles (int): Input channel. | |||
| out_channels (int): Output channel. | |||
| kernel_size (int): Input kernel size. Default: 1 | |||
| stride (int): Stride size for the first convolutional layer. Default: 1. | |||
| padding (int): Implicit paddings on both sides of the input. Default: 0. | |||
| pad_mode (int): Padding mode. Optional values are "same", "valid", "pad". Default: "same". | |||
| Returns: | |||
| Tensor, output tensor. | |||
| """ | |||
| def __init__(self, in_channels, out_channels, kernel_size=1, stride=1, padding=0, pad_mode="same"): | |||
| super(Conv2dBlock, self).__init__() | |||
| self.conv = nn.Conv2d(in_channels, out_channels, kernel_size=kernel_size, stride=stride, | |||
| padding=padding, pad_mode=pad_mode, weight_init=weight_variable(), | |||
| bias_init=False) | |||
| self.bn = nn.BatchNorm2d(out_channels, eps=0.001) | |||
| self.relu = nn.ReLU() | |||
| def construct(self, x): | |||
| x = self.conv(x) | |||
| x = self.bn(x) | |||
| x = self.relu(x) | |||
| return x | |||
| class Inception(nn.Cell): | |||
| """ | |||
| Inception Block | |||
| """ | |||
| def __init__(self, in_channels, n1x1, n3x3red, n3x3, n5x5red, n5x5, pool_planes): | |||
| super(Inception, self).__init__() | |||
| self.b1 = Conv2dBlock(in_channels, n1x1, kernel_size=1) | |||
| self.b2 = nn.SequentialCell([Conv2dBlock(in_channels, n3x3red, kernel_size=1), | |||
| Conv2dBlock(n3x3red, n3x3, kernel_size=3, padding=0)]) | |||
| self.b3 = nn.SequentialCell([Conv2dBlock(in_channels, n5x5red, kernel_size=1), | |||
| Conv2dBlock(n5x5red, n5x5, kernel_size=3, padding=0)]) | |||
| self.maxpool = P.MaxPoolWithArgmax(ksize=3, strides=1, padding="same") | |||
| self.b4 = Conv2dBlock(in_channels, pool_planes, kernel_size=1) | |||
| self.concat = P.Concat(axis=1) | |||
| def construct(self, x): | |||
| branch1 = self.b1(x) | |||
| branch2 = self.b2(x) | |||
| branch3 = self.b3(x) | |||
| cell, argmax = self.maxpool(x) | |||
| branch4 = self.b4(cell) | |||
| _ = argmax | |||
| return self.concat((branch1, branch2, branch3, branch4)) | |||
| class GooGLeNet(nn.Cell): | |||
| """ | |||
| Googlenet architecture | |||
| """ | |||
| def __init__(self, num_classes): | |||
| super(GooGLeNet, self).__init__() | |||
| self.conv1 = Conv2dBlock(3, 64, kernel_size=7, stride=2, padding=0) | |||
| self.maxpool1 = P.MaxPoolWithArgmax(ksize=3, strides=2, padding="same") | |||
| self.conv2 = Conv2dBlock(64, 64, kernel_size=1) | |||
| self.conv3 = Conv2dBlock(64, 192, kernel_size=3, padding=0) | |||
| self.maxpool2 = P.MaxPoolWithArgmax(ksize=3, strides=2, padding="same") | |||
| self.block3a = Inception(192, 64, 96, 128, 16, 32, 32) | |||
| self.block3b = Inception(256, 128, 128, 192, 32, 96, 64) | |||
| self.maxpool3 = P.MaxPoolWithArgmax(ksize=3, strides=2, padding="same") | |||
| self.block4a = Inception(480, 192, 96, 208, 16, 48, 64) | |||
| self.block4b = Inception(512, 160, 112, 224, 24, 64, 64) | |||
| self.block4c = Inception(512, 128, 128, 256, 24, 64, 64) | |||
| self.block4d = Inception(512, 112, 144, 288, 32, 64, 64) | |||
| self.block4e = Inception(528, 256, 160, 320, 32, 128, 128) | |||
| self.maxpool4 = P.MaxPoolWithArgmax(ksize=2, strides=2, padding="same") | |||
| self.block5a = Inception(832, 256, 160, 320, 32, 128, 128) | |||
| self.block5b = Inception(832, 384, 192, 384, 48, 128, 128) | |||
| self.mean = P.ReduceMean(keep_dims=True) | |||
| self.dropout = nn.Dropout(keep_prob=0.8) | |||
| self.flatten = nn.Flatten() | |||
| self.classifier = nn.Dense(1024, num_classes, weight_init=weight_variable(), | |||
| bias_init=weight_variable()) | |||
| def construct(self, x): | |||
| x = self.conv1(x) | |||
| x, argmax = self.maxpool1(x) | |||
| x = self.conv2(x) | |||
| x = self.conv3(x) | |||
| x, argmax = self.maxpool2(x) | |||
| x = self.block3a(x) | |||
| x = self.block3b(x) | |||
| x, argmax = self.maxpool3(x) | |||
| x = self.block4a(x) | |||
| x = self.block4b(x) | |||
| x = self.block4c(x) | |||
| x = self.block4d(x) | |||
| x = self.block4e(x) | |||
| x, argmax = self.maxpool4(x) | |||
| x = self.block5a(x) | |||
| x = self.block5b(x) | |||
| x = self.mean(x, (2, 3)) | |||
| x = self.flatten(x) | |||
| x = self.classifier(x) | |||
| _ = argmax | |||
| return x | |||