def __init__(self, input_shape, arc='celeba'):
super(GlobalDiscriminator, self).__init__()
self.arc = arc
self.input_shape = input_shape
self.output_shape = (1024, )
self.img_c = input_shape[0]
self.img_h = input_shape[1]
self.img_w = input_shape[2]
# input_shape: (None, img_c, img_h, img_w)
self.conv1 = nn.Conv2d(self.img_c,
64,
kernel_size=5,
stride=2,
padding=2)
self.bn1 = nn.BatchNorm2d(64)
self.act1 = nn.ReLU()
# input_shape: (None, 64, img_h//2, img_w//2)
self.conv2 = nn.Conv2d(64, 128, kernel_size=5, stride=2, padding=2)
self.bn2 = nn.BatchNorm2d(128)
self.act2 = nn.ReLU()
# input_shape: (None, 128, img_h//4, img_w//4)
self.conv3 = nn.Conv2d(128, 256, kernel_size=5, stride=2, padding=2)
self.bn3 = nn.BatchNorm2d(256)
self.act3 = nn.ReLU()
# input_shape: (None, 256, img_h//8, img_w//8)
self.conv4 = nn.Conv2d(256, 512, kernel_size=5, stride=2, padding=2)
self.bn4 = nn.BatchNorm2d(512)
self.act4 = nn.ReLU()
# input_shape: (None, 512, img_h//16, img_w//16)
self.conv5 = nn.Conv2d(512, 512, kernel_size=5, stride=2, padding=2)
self.bn5 = nn.BatchNorm2d(512)
self.act5 = nn.ReLU()
# input_shape: (None, 512, img_h//32, img_w//32)
if arc == 'celeba':
in_features = 512 * (self.img_h // 32) * (self.img_w // 32)
self.flatten6 = Flatten()
self.linear6 = nn.Linear(in_features, 1024)
self.act6 = nn.ReLU()
elif arc == 'places2' or arc == 'pascal':
self.conv6 = nn.Conv2d(512,
512,
kernel_size=5,
stride=2,
padding=2)
self.bn6 = nn.BatchNorm2d(512)
self.act6 = nn.ReLU()
# input_shape (None, 512, img_h//64, img_w//64)
in_features = 512 * (self.img_h // 64) * (self.img_w // 64)
self.flatten7 = Flatten()
self.linear7 = nn.Linear(in_features, 1024)
self.act7 = nn.ReLU()
else:
raise ValueError('Unsupported architecture \'%s\'.' % self.arc)
def load_model(self):
self.backbone = densenet121(False).features
self.head = nn.Sequential(nn.AdaptiveAvgPool2d(1), Flatten(),
nn.Linear(1024, 14))
model_name = 'chexnet.h5'
state_dict = torch.load(model_name)
self.load_state_dict(state_dict)
def Inference(in_op,num_labels):
conv1 = Conv(in_op,'conv1',3,1,80)
conv2 = Conv(conv1,'conv2',3,1,64)
pool1 = Maxpool(conv2,'pool1',2,2)
conv3 = Conv(pool1,'conv3',3,1,64)
# conv4 = Conv(conv3,'conv4',3,1,64)
pool2 = Maxpool(conv3,'pool2',2,2)
# conv5 = Conv(pool2,'conv5',3,1,32)
# conv6 = Conv(conv5,'conv6',3,1,32)
# pool3 = Maxpool(conv6,'pool3',2,2)
##
# conv7 = Conv(pool3,'conv7',3,1,246)
# conv8 = Conv(conv7,'conv8',3,1,256)
# pool4 = Maxpool(conv8,'pool4',2,2)
#
# conv9 = Conv(pool4,'conv9',3,1,128)
# conv10= Conv(conv9,'conv10',3,1,128)
# pool5 = Maxpool(conv10,'pool5',2,2)
flat = Flatten(pool2)
fc1 = Fc(flat, 'fc1', 128, activation = 'relu')
# drop1 = tf.nn.dropout(fc1,0.75)
# fc2 = Fc(drop1,'fc2',32)
# drop2 = tf.nn.dropout(fc2,0.5)
logit = Fc(fc1, 'logit', num_labels)
return logit
def __init__(self, context: PyTorchTrialContext) -> None:
self.context = context
# Create a unique download directory for each rank so they don't overwrite each other.
self.download_directory = f"/tmp/data-rank{self.context.distributed.get_rank()}"
self.data_downloaded = False
self.model = self.context.wrap_model(nn.Sequential(
nn.Conv2d(1, self.context.get_hparam("n_filters1"), 3, 1),
nn.ReLU(),
nn.Conv2d(
self.context.get_hparam("n_filters1"), self.context.get_hparam("n_filters2"), 3,
),
nn.ReLU(),
nn.MaxPool2d(2),
nn.Dropout2d(self.context.get_hparam("dropout1")),
Flatten(),
nn.Linear(144 * self.context.get_hparam("n_filters2"), 128),
nn.ReLU(),
nn.Dropout2d(self.context.get_hparam("dropout2")),
nn.Linear(128, 10),
nn.LogSoftmax(),
))
self.optimizer = self.context.wrap_optimizer(torch.optim.Adadelta(
self.model.parameters(), lr=self.context.get_hparam("learning_rate"))
)
def __init__(self, context: PyTorchTrialContext) -> None:
self.context = context
self.download_directory = f"/tmp/data-rank{self.context.distributed.get_rank()}"
self.data_downloaded = False
self.model = self.context.wrap_model(
nn.Sequential(
nn.Conv2d(1, self.context.get_hparam("n_filters1"), 3, 1),
nn.ReLU(),
nn.Conv2d(
self.context.get_hparam("n_filters1"),
self.context.get_hparam("n_filters2"),
3,
),
nn.ReLU(),
nn.MaxPool2d(2),
nn.Dropout2d(self.context.get_hparam("dropout1")),
Flatten(),
nn.Linear(144 * self.context.get_hparam("n_filters2"), 128),
nn.ReLU(),
nn.Dropout2d(self.context.get_hparam("dropout2")),
nn.Linear(128, 10),
nn.LogSoftmax(),
))
self.optimizer = self.context.wrap_optimizer(
torch.optim.Adadelta(self.model.parameters(),
lr=self.context.get_hparam("learning_rate")))
# We let name=None (by not specifiying name) to return a dictionary of metrics from a
# single reducer (one f1_score per class). If we were going to return a single metric
# (rather than a dictionary of multiple metrics) we would have to specify the name here.
self.f1_score = self.context.experimental.wrap_reducer(
PerClassF1Score())
def __init__(self, device, dataset, input_channel, input_size, width,
linear_size):
super(cnn_2layer, self).__init__()
mean, sigma = get_mean_sigma(device, dataset, IBP=True)
self.normalizer = Normalization(mean, sigma)
self.layers = [
Normalization(mean, sigma),
Conv2d(input_channel,
4 * width,
4,
stride=2,
padding=1,
dim=input_size),
ReLU((4 * width, input_size // 2, input_size // 2)),
Conv2d(4 * width,
8 * width,
4,
stride=2,
padding=1,
dim=input_size // 2),
ReLU((8 * width, input_size // 4, input_size // 4)),
Flatten(),
Linear(8 * width * (input_size // 4) * (input_size // 4),
linear_size),
ReLU(linear_size),
Linear(linear_size, 10),
]
def load_model(self, model_name):
self.backbone = densenet121(False).features
self.head = nn.Sequential(nn.AdaptiveAvgPool2d(1), Flatten(),
nn.Linear(1024, 14))
path = Path('/content/drive/My Drive/SRP/Project/chestX-ray-14')
state_dict = torch.load(path / model_name / 'chexnet.h5')
self.load_state_dict(state_dict)
def __init__(self, d, h, w, activation, hidden_size, num_layers, recurrent=False):
super(CNNBase, self).__init__(recurrent, hidden_size, hidden_size)
self.main = nn.Sequential(
init_(nn.Conv2d(d, hidden_size, kernel_size=1)),
activation,
*[
nn.Sequential(
init_(
nn.Conv2d(hidden_size, hidden_size, kernel_size=1), activation
),
activation,
)
for _ in range(num_layers)
],
# init_(nn.Conv2d(d, 32, 8, stride=4)), nn.ReLU(),
# init_(nn.Conv2d(32, 64, kernel_size=4, stride=2)), nn.ReLU(),
# init_(nn.Conv2d(32, 64, kernel_size=4, stride=2)), nn.ReLU(),
# init_(nn.Conv2d(64, 32, kernel_size=3, stride=1)),
activation,
Flatten(),
# init_(nn.Linear(32 * 7 * 7, hidden_size)), nn.ReLU())
init_(nn.Linear(hidden_size * h * w, hidden_size)),
activation,
)
self.critic_linear = init_(nn.Linear(hidden_size, 1))
self.train()
def load_model(self, model_name):
self.backbone = densenet121(False).features
self.head = nn.Sequential(nn.AdaptiveAvgPool2d(1), Flatten(),
nn.Linear(1024, 14))
path = Path('/home/dattran/data/xray-thesis/chestX-ray14/models')
state_dict = torch.load(path / model_name / 'best.h5')
self.load_state_dict(state_dict)
def vgg_bn():
return [
Conv2D([3, 3], 32, [1, 1, 1, 1], padding='SAME'),
Conv2DBatchNorm(32),
Activation(tf.nn.relu),
Conv2D([3, 3], 32, [1, 1, 1, 1], padding='SAME'),
Conv2DBatchNorm(32),
Activation(tf.nn.relu),
Conv2D([3, 3], 64, [1, 2, 2, 1]),
Conv2DBatchNorm(64),
Activation(tf.nn.relu),
Conv2D([3, 3], 64, [1, 1, 1, 1], padding='SAME'),
Conv2DBatchNorm(64),
Activation(tf.nn.relu),
Conv2D([3, 3], 128, [1, 2, 2, 1]),
Conv2DBatchNorm(128),
Activation(tf.nn.relu),
Conv2D([3, 3], 128, [1, 1, 1, 1], padding='SAME'),
Conv2DBatchNorm(128),
Activation(tf.nn.relu),
Flatten(),
Dense(128),
Activation(tf.sigmoid),
Dropout(0.5),
Dense(10),
Activation(tf.nn.softmax),
]
def generate_sequential_network():
net = torch.nn.Sequential(torch.nn.Conv2d(1, 6,
kernel_size=(5, 5),
padding=(2, 2)),
torch.nn.ReLU(),
torch.nn.MaxPool2d(kernel_size=(2, 2),
stride=(2, 2)),
torch.nn.Conv2d(6, 16,
kernel_size=(5, 5),
padding=(0, 0)),
torch.nn.ReLU(),
torch.nn.MaxPool2d(kernel_size=(2, 2),
stride=(2, 2)),
torch.nn.Conv2d(16, 120,
kernel_size=(5, 5),
padding=(0, 0)),
torch.nn.ReLU(),
Flatten(),
torch.nn.Linear(120, 84),
torch.nn.ReLU(),
torch.nn.Linear(84, 10),
torch.nn.Sigmoid()
)
return net
def __init__(self, input_shape):
super(LocalDiscriminator, self).__init__()
self.input_shape = input_shape
self.output_shape = (1024,)
self.img_c = input_shape[0]
self.img_h = input_shape[1]
self.img_w = input_shape[2]
# input_shape: (None, img_c, img_h, img_w)
self.conv1 = nn.Conv2d(self.img_c, 64, kernel_size=5, stride=2, padding=2)
self.bn1 = nn.BatchNorm2d(64)
self.act1 = nn.ReLU()
# input_shape: (None, 64, img_h//2, img_w//2)
self.conv2 = nn.Conv2d(64, 128, kernel_size=5, stride=2, padding=2)
self.bn2 = nn.BatchNorm2d(128)
self.act2 = nn.ReLU()
# input_shape: (None, 128, img_h//4, img_w//4)
self.conv3 = nn.Conv2d(128, 256, kernel_size=5, stride=2, padding=2)
self.bn3 = nn.BatchNorm2d(256)
self.act3 = nn.ReLU()
# input_shape: (None, 256, img_h//8, img_w//8)
self.conv4 = nn.Conv2d(256, 512, kernel_size=5, stride=2, padding=2)
self.bn4 = nn.BatchNorm2d(512)
self.act4 = nn.ReLU()
# input_shape: (None, 512, img_h//16, img_w//16)
self.conv5 = nn.Conv2d(512, 512, kernel_size=5, stride=2, padding=2)
self.bn5 = nn.BatchNorm2d(512)
self.act5 = nn.ReLU()
# input_shape: (None, 512, img_h//32, img_w//32)
in_features = 512 * (max(self.img_h//32,1)) * (max(self.img_w//32,1))
self.flatten6 = Flatten()
# input_shape: (None, 512 * img_h//32 * img_w//32)
self.linear6 = nn.Linear(in_features, 1024)
self.act6 = nn.ReLU()
def __init__(self,
width_coeff,
depth_coeff,
depth_div=8,
min_depth=None,
dropout_rate=0.2,
drop_connect_rate=0.2,
num_classes=1000):
super().__init__()
min_depth = min_depth or depth_div
def renew_ch(x):
if not width_coeff:
return x
x *= width_coeff
new_x = max(min_depth,
int(x + depth_div / 2) // depth_div * depth_div)
if new_x < 0.9 * x:
new_x += depth_div
return int(new_x)
def renew_repeat(x):
return int(math.ceil(x * depth_coeff))
self.stem = conv_bn_act(3,
renew_ch(32),
kernel_size=3,
stride=2,
bias=False)
self.blocks = nn.Sequential(
# input channel output expand k s skip se
MBBlock(renew_ch(32), renew_ch(16), 1, 3, 1, renew_repeat(1), True,
0.25, drop_connect_rate),
MBBlock(renew_ch(16), renew_ch(24), 6, 3, 2, renew_repeat(2), True,
0.25, drop_connect_rate),
MBBlock(renew_ch(24), renew_ch(40), 6, 5, 2, renew_repeat(2), True,
0.25, drop_connect_rate),
MBBlock(renew_ch(40), renew_ch(80), 6, 3, 2, renew_repeat(3), True,
0.25, drop_connect_rate),
MBBlock(renew_ch(80), renew_ch(112), 6, 5, 1, renew_repeat(3),
True, 0.25, drop_connect_rate),
MBBlock(renew_ch(112), renew_ch(192), 6, 5, 2, renew_repeat(4),
True, 0.25, drop_connect_rate),
MBBlock(renew_ch(192), renew_ch(320), 6, 3, 1, renew_repeat(1),
True, 0.25, drop_connect_rate))
self.head = nn.Sequential(
*conv_bn_act(renew_ch(320),
renew_ch(1280),
kernel_size=1,
bias=False), nn.AdaptiveAvgPool2d(1),
nn.Dropout2d(dropout_rate, True)
if dropout_rate > 0 else nn.Identity(), Flatten(),
nn.Linear(renew_ch(1280), num_classes))
self.init_weights()
def __init__(self): super(ConvNet, self).__init__() self.conv_layers == nn.ModuleList() self.flat = Flatten() self.conv_layers.append(ConvBlock(CHANNELS, 32, 8, 4, act = nn.ReLU())) self.conv_layers.append(ConvBlock(32, 64, 4, 2, act = nn.ReLU())) self.conv_layers.append(ConvBlock(64, 64, 3, 1, act = nn.ReLU()))
def __init__(self, config):
super(MLP_VAE, self).__init__()
self.__dict__.update(config)
self.flat = Flatten()
self.dense1 = nn.Linear(self.timesteps * self.input_dim, 64)
self.densemu = nn.Linear(64, self.latent_dim)
self.denselogvar = nn.Linear(64, self.latent_dim)
self.dense2 = nn.Linear(self.latent_dim, 64)
self.dense3 = nn.Linear(64, self.timesteps * self.input_dim)
self.reshape = Reshape((self.timesteps, self.input_dim))
def load_pretrained(self, torch=False):
if torch:
# torch vision, train the same -> ~0.75 AUC on test
self.backbone = densenet121(True).features
else:
# pretrainmodel, train -> 0.85 AUC on test
self.backbone = pretrainedmodels.__dict__['densenet121']().features
self.head = nn.Sequential(nn.AdaptiveAvgPool2d(1), Flatten(),
nn.Linear(1024, 14))
def IBP_large(in_ch, in_dim, linear_size=512):
model = nn.Sequential(
nn.Conv2d(in_ch, 64, 3, stride=1, padding=1), nn.ReLU(),
nn.Conv2d(64, 64, 3, stride=1, padding=1), nn.ReLU(),
nn.Conv2d(64, 128, 3, stride=2, padding=1), nn.ReLU(),
nn.Conv2d(128, 128, 3, stride=1, padding=1), nn.ReLU(),
nn.Conv2d(128, 128, 3, stride=1, padding=1), nn.ReLU(), Flatten(),
nn.Linear((in_dim // 2) * (in_dim // 2) * 128, linear_size), nn.ReLU(),
nn.Linear(linear_size, 10))
return model
def __init__(self, config):
super(MLP_AE,self).__init__()
self.__dict__.update(config)
self.encoder = nn.Sequential(
Flatten(),
nn.Linear(self.timesteps * self.input_dim, self.units_enc),
nn.Linear(self.units_enc, self.latent_dim),
)
self.decoder = nn.Sequential(
nn.Linear(self.latent_dim,self.units_dec),
nn.Linear(self.units_dec, self.timesteps * self.input_dim),
Reshape((self.timesteps, self.input_dim))
)
def model_cnn_2layer(in_ch, in_dim, width, linear_size=128):
"""
CNN, small 2-layer (default kernel size is 4 by 4)
Parameter:
in_ch: input image channel, 1 for MNIST and 3 for CIFAR
in_dim: input dimension, 28 for MNIST and 32 for CIFAR
width: width multiplier
"""
model = nn.Sequential(
nn.Conv2d(in_ch, 4 * width, 4, stride=2, padding=1), nn.ReLU(),
nn.Conv2d(4 * width, 8 * width, 4, stride=2, padding=1), nn.ReLU(),
Flatten(),
nn.Linear(8 * width * (in_dim // 4) * (in_dim // 4), linear_size),
nn.ReLU(), nn.Linear(linear_size, 10))
return model
def _build_encoder(self):
"""
CNN encoder
Conv1 -> ReLU -> MaxPool1 -> Conv2 -> ReLU -> MaxPool2 ->
Flatten -> FC1 -> ReLU -> FC2
"""
self.encoder = OrderedDict()
self.encoder["Conv1"] = Conv2D(
act_fn=ReLU(),
init=self.init,
pad=self.enc_conv1_pad,
optimizer=self.optimizer,
out_ch=self.enc_conv1_out_ch,
stride=self.enc_conv1_stride,
kernel_shape=self.enc_conv1_kernel_shape,
)
self.encoder["Pool1"] = Pool2D(
mode="max",
optimizer=self.optimizer,
stride=self.enc_pool1_stride,
kernel_shape=self.enc_pool1_kernel_shape,
)
self.encoder["Conv2"] = Conv2D(
act_fn=ReLU(),
init=self.init,
pad=self.enc_conv2_pad,
optimizer=self.optimizer,
out_ch=self.enc_conv2_out_ch,
stride=self.enc_conv2_stride,
kernel_shape=self.enc_conv2_kernel_shape,
)
self.encoder["Pool2"] = Pool2D(
mode="max",
optimizer=self.optimizer,
stride=self.enc_pool2_stride,
kernel_shape=self.enc_pool2_kernel_shape,
)
self.encoder["Flatten3"] = Flatten(optimizer=self.optimizer)
self.encoder["FC4"] = FullyConnected(
n_out=self.latent_dim, act_fn=ReLU(), optimizer=self.optimizer
)
self.encoder["FC5"] = FullyConnected(
n_out=self.T * 2,
optimizer=self.optimizer,
act_fn=Affine(slope=1, intercept=0),
init=self.init,
)
def add(self, layer_type, **kwargs):
layer = None
# send the layer the output shape of the last layer, or the input shape if it's the first
kwargs['input_shape'] = self._layers[-1].output_shape if len(self._layers) else self._input_shape
if layer_type == 'conv':
layer = Conv2D(**kwargs)
elif layer_type == 'dense':
layer = Dense(**kwargs)
elif layer_type == 'pool':
layer = MaxPooling2D(**kwargs)
elif layer_type == 'flat':
layer = Flatten(**kwargs)
self._layers.append(layer)
def __init__(self,
device,
dataset,
n_class=10,
input_size=32,
input_channel=3,
width1=1,
width2=1,
width3=1,
linear_size=100):
super(ConvMedBig, self).__init__()
mean, sigma = get_mean_sigma(device, dataset)
self.normalizer = Normalization(mean, sigma)
layers = [
Normalization(mean, sigma),
Conv2d(input_channel,
16 * width1,
3,
stride=1,
padding=1,
dim=input_size),
ReLU((16 * width1, input_size, input_size)),
Conv2d(16 * width1,
16 * width2,
4,
stride=2,
padding=1,
dim=input_size // 2),
ReLU((16 * width2, input_size // 2, input_size // 2)),
Conv2d(16 * width2,
32 * width3,
4,
stride=2,
padding=1,
dim=input_size // 2),
ReLU((32 * width3, input_size // 4, input_size // 4)),
Flatten(),
Linear(32 * width3 * (input_size // 4) * (input_size // 4),
linear_size),
ReLU(linear_size),
Linear(linear_size, n_class),
]
self.blocks = Sequential(*layers)
def model_cnn_4layer(in_ch, in_dim, width, linear_size):
"""
CNN, relatively large 4-layer
Parameter:
in_ch: input image channel, 1 for MNIST and 3 for CIFAR
in_dim: input dimension, 28 for MNIST and 32 for CIFAR
width: width multiplier
"""
model = nn.Sequential(
nn.Conv2d(in_ch, 4 * width, 3, stride=1, padding=1), nn.ReLU(),
nn.Conv2d(4 * width, 4 * width, 4, stride=2, padding=1), nn.ReLU(),
nn.Conv2d(4 * width, 8 * width, 3, stride=1, padding=1), nn.ReLU(),
nn.Conv2d(8 * width, 8 * width, 4, stride=2, padding=1), nn.ReLU(),
Flatten(),
nn.Linear(8 * width * (in_dim // 4) * (in_dim // 4), linear_size),
nn.ReLU(), nn.Linear(linear_size, linear_size), nn.ReLU(),
nn.Linear(linear_size, 10))
return model
def vgg_bn():
return [
#1
Conv2D([7, 7], 64, [1, 3, 3, 1]),
Conv2DBatchNorm(64),
Activation(tf.nn.relu),
MaxPool([1,4,4,1],[1,1,1,1]),
#2
Convolutional_block(f = 3, filters = [64,64,256],s = 1),
MaxPool([1,5,5,1],[1,1,1,1]),
Dropout(0.5),
Identity_block(f = 3, filters=[64,64,256]),
Dropout(0.5),
Identity_block(f = 3, filters=[64,64,256]),
Dropout(0.5),
MaxPool([1,2,2,1],[1,1,1,1]),
#3
Convolutional_block(f = 3, filters = [128,128,512],s = 2),
Dropout(0.5),
Identity_block(f = 3, filters=[128,128,512]),
Dropout(0.5),
Identity_block(f = 3, filters=[128,128,512]),
Dropout(0.5),
MaxPool([1,2,2,1],[1,1,1,1]),
#4
Convolutional_block(f = 3, filters = [256,256,1024],s = 2),
Identity_block(f = 3, filters=[256,256,1024]),
Identity_block(f = 3, filters=[256,256,1024]),
Identity_block(f = 3, filters=[256,256,1024]),
Identity_block(f = 3, filters=[256,256,1024]),
Identity_block(f = 3, filters=[256,256,1024]),
Flatten(),
Dense(128),
Activation(tf.sigmoid),
Dropout(0.5),
Dense(10),
#Fully_connected(),
Activation(tf.nn.softmax),
]
def make_cnn(X_dim, num_class):
conv = Conv(X_dim,
n_filter=16,
h_filter=5,
w_filter=5,
stride=1,
padding=2)
relu = ReLU()
maxpool = Maxpool(conv.out_dim, size=2, stride=2)
conv2 = Conv(maxpool.out_dim,
n_filter=20,
h_filter=5,
w_filter=5,
stride=1,
padding=2)
relu2 = ReLU()
maxpool2 = Maxpool(conv2.out_dim, size=2, stride=2)
flat = Flatten()
fc = FullyConnected(np.prod(maxpool2.out_dim), num_class)
return [conv, relu, maxpool, conv2, relu2, maxpool2, flat, fc]
def modFC(): # {{{
inRep = Representation(shape=(3, 32, 32))
flow = Flatten()(inRep)
for w in fcwidths:
flow = fcModule(flow, w, baseDropout)
if mirroring:
flow = CReLU()(flow)
outRep = FC(10, initialisation=init, initKWArgs=initKWArgs, reg=regP, regFunction=regF)(flow)
if observing and not resNet:
outRep = Observation()(outRep)
return NN(
inRep
, outRep
, archiver=arc
, optimiser=opt
, objective=obj
, postEpochFunctions=pefs
) # }}}
def build_model(self) -> nn.Module:
model = nn.Sequential(
nn.Conv2d(1, self.context.get_hparam("n_filters1"), 3, 1),
nn.ReLU(),
nn.Conv2d(
self.context.get_hparam("n_filters1"), self.context.get_hparam("n_filters2"), 3,
),
nn.ReLU(),
nn.MaxPool2d(2),
nn.Dropout2d(self.context.get_hparam("dropout1")),
Flatten(),
nn.Linear(144 * self.context.get_hparam("n_filters2"), 128),
nn.ReLU(),
nn.Dropout2d(self.context.get_hparam("dropout2")),
nn.Linear(128, 10),
nn.LogSoftmax(),
)
# If loading backbone weights, do not call reset_parameters() or
# call before loading the backbone weights.
reset_parameters(model)
return model
def build_model():
tf.compat.v1.reset_default_graph()
x = tf.compat.v1.placeholder(tf.float32, [None, 32, 32, 3])
t = tf.compat.v1.placeholder(tf.float32, [None, 10])
is_training = tf.compat.v1.placeholder(tf.bool)
layers = [
Conv((3, 3, 3, 64), tf.nn.relu),
Conv((3, 3, 64, 64), tf.nn.relu),
Pooling((1, 2, 2, 1)),
Conv((3, 3, 64, 128), tf.nn.relu),
Conv((3, 3, 128, 128), tf.nn.relu),
Pooling((1, 2, 2, 1)),
Flatten(),
Dense(3200, 256, tf.nn.relu),
Dense(256, 256, tf.nn.relu),
Dense(256, 10, tf.nn.softmax)
]
y = f_props(layers, x)
params = get_params(layers)
cost = - tf.reduce_mean(tf.reduce_sum(t * tf_log(y), axis=1))
return x, t, is_training, y, cost, params
def __init__(self, context: det.TrialContext) -> None:
super().__init__()
# Set hyperparameters that influence the model architecture.
self.n_filters1 = context.get_hparam("n_filters1")
self.n_filters2 = context.get_hparam("n_filters2")
self.dropout = context.get_hparam("dropout")
# Define the central model.
self.model = nn.Sequential(
nn.Conv2d(1, self.n_filters1, kernel_size=5),
nn.MaxPool2d(2),
nn.ReLU(),
nn.Conv2d(self.n_filters1, self.n_filters2, kernel_size=5),
nn.MaxPool2d(2),
nn.ReLU(),
Flatten(),
nn.Linear(16 * self.n_filters2, 50),
nn.ReLU(),
nn.Dropout2d(self.dropout),
) # type: nn.Sequential
# Predict digit labels from self.model.
self.digit = nn.Sequential(nn.Linear(50, 10), nn.Softmax(dim=0))
# Predict binary labels from self.model.
self.binary = nn.Sequential(nn.Linear(50, 1), nn.Sigmoid(), Squeeze())
def build_model(self) -> nn.Module:
model = nn.Sequential(
nn.Conv2d(1, pedl.get_hyperparameter("n_filters1"), kernel_size=5),
nn.MaxPool2d(2),
nn.ReLU(),
nn.Conv2d(
pedl.get_hyperparameter("n_filters1"),
pedl.get_hyperparameter("n_filters2"),
kernel_size=5,
),
nn.MaxPool2d(2),
nn.ReLU(),
Flatten(),
nn.Linear(16 * pedl.get_hyperparameter("n_filters2"), 50),
nn.ReLU(),
nn.Dropout2d(pedl.get_hyperparameter("dropout")),
nn.Linear(50, 10),
nn.LogSoftmax(),
)
# If loading backbone weights, do not call reset_parameters() or
# call before loading the backbone weights.
reset_parameters(model)
return model