def __init__(self, params):
specs = ResNet.specs[params['model']]
Model.check_parameters(
params, {
'name': specs['name'],
'input_shape': (3, 224, 224),
'num_classes': 1000,
'phase': 'training',
'dtype': 'float32'
})
Model.__init__(self, params)
# Adapted from https://github.com/tornadomeet/ResNet/blob/master/train_resnet.py
# Original author Wei Wu
if specs['num_layers'] >= 50:
filter_list = [64, 256, 512, 1024, 2048]
bottle_neck = True
else:
filter_list = [64, 64, 128, 256, 512]
bottle_neck = False
self.__output = self.resnet(units=specs['units'],
num_stages=4,
filter_list=filter_list,
bottle_neck=bottle_neck,
workspace=256)
def __init__(self, params):
Model.check_parameters(
params,
{'input_shape': (3, 299, 299), 'num_classes': 1000,
'phase': 'training',
'dtype': 'float32'}
)
Model.__init__(self, params)
self.counts = defaultdict(lambda: 0)
def __init__(self, params):
Model.check_parameters(
params,
{'name': 'EngAcousticModel', 'input_shape':(540),
'num_classes': 8192, 'phase': 'training',
'dtype': 'float32'}
)
Model.__init__(self, params)
v = self.add_data_node()
for _ in range(5):
v = mx.sym.FullyConnected(data=v, num_hidden=2048)
v = mx.symbol.Activation(data=v, act_type="relu")
self.__output = self.add_head_nodes(v)
def __init__(self, params):
Model.check_parameters(
params,
{'name': 'DeepMNIST', 'input_shape': (784, ), 'num_classes': 10,
'phase': 'training',
'dtype': 'float32'}
)
Model.__init__(self, params)
v = self.add_data_node()
for layer_size in [2500, 2000, 1500, 1000, 500]:
v = mx.sym.FullyConnected(data=v, num_hidden=layer_size)
v = mx.symbol.Activation(data=v, act_type="relu")
self.__output = self.add_head_nodes(v)
def __init__(self, params):
specs = VGG.specs[params['model']]
Model.check_parameters(
params, {
'name': specs['name'],
'input_shape': (3, 224, 224),
'num_classes': 1000,
'phase': 'training',
'dtype': 'float32'
})
Model.__init__(self, params)
training = self.phase == 'training'
v = self.add_data_node()
layers, filters = specs['specs']
for i, num in enumerate(layers):
for j in range(num):
v = mx.symbol.Convolution(name='conv%d_%d' % (i + 1, j + 1),
data=v,
kernel=(3, 3),
pad=(1, 1),
num_filter=filters[i])
v = mx.symbol.Activation(name='relu%d_%d' % (i + 1, j + 1),
data=v,
act_type="relu")
v = mx.sym.Pooling(name='pool%d' % (i + 1),
data=v,
pool_type="max",
kernel=(2, 2),
stride=(2, 2))
v = mx.sym.Flatten(name='flatten', data=v)
for i in range(2):
v = mx.sym.FullyConnected(name='fc%d' % (6 + i),
data=v,
num_hidden=4096)
v = mx.symbol.Activation(name='relu%d' % (6 + i),
data=v,
act_type="relu")
v = mx.symbol.Dropout(name='drop%d' %
(6 + i), data=v, p=0.5) if training else v
self.__output = self.add_head_nodes(v)
def __init__(self, params):
Model.check_parameters(
params,
{'name': 'AlexNet', 'input_shape':(3, 227, 227), 'num_classes': 1000,
'phase': 'training',
'dtype': 'float32'}
)
Model.__init__(self, params)
if self.dtype == 'float16':
print("[WARNING] MxNet does not provide half precision kernel for LRN layer. It will be disabled. "\
"Thus, comparison with single precision version or other frameworks will not be totally fair.")
training = self.phase == 'training'
data = self.add_data_node()
conv1 = mx.symbol.Convolution(name='conv1', data=data, kernel=(11, 11), stride=(4, 4), num_filter=96)
relu1 = mx.symbol.Activation(name='relu1', data=conv1, act_type='relu')
norm1 = self.maybe_lrn(relu1, 'norm1')
pool1 = mx.symbol.Pooling(name='pool1', data=norm1, pool_type="max", kernel=(3, 3), stride=(2, 2))
conv2 = mx.symbol.Convolution(name='conv2', data=pool1, kernel=(5, 5), pad=(2, 2), num_filter=256, num_group=1)
relu2 = mx.symbol.Activation(name='relu2', data=conv2, act_type="relu")
norm2 = self.maybe_lrn(relu2, 'norm2')
pool2 = mx.symbol.Pooling(name='pool2', data=norm2, kernel=(3, 3), stride=(2, 2), pool_type="max")
conv3 = mx.symbol.Convolution(name='conv3', data=pool2, kernel=(3, 3), pad=(1, 1), num_filter=384)
relu3 = mx.symbol.Activation(name='relu3', data=conv3, act_type="relu")
conv4 = mx.symbol.Convolution(name='conv4', data=relu3, kernel=(3, 3), pad=(1, 1), num_filter=384, num_group=1)
relu4 = mx.symbol.Activation(name='relu4', data=conv4, act_type="relu")
conv5 = mx.symbol.Convolution(name='conv5', data=relu4, kernel=(3, 3), pad=(1, 1), num_filter=256, num_group=1)
relu5 = mx.symbol.Activation(name='relu5', data=conv5, act_type="relu")
pool5 = mx.symbol.Pooling(name='pool5', data=relu5, kernel=(3, 3), stride=(2, 2), pool_type="max")
flatten = mx.symbol.Flatten(data=pool5)
fc6 = mx.symbol.FullyConnected(name='fc6', data=flatten, num_hidden=4096)
relu6 = mx.symbol.Activation(name='relu6', data=fc6, act_type="relu")
drop6 = mx.symbol.Dropout(name='drop6', data=relu6, p=0.5) if training else relu6
fc7 = mx.symbol.FullyConnected(name='fc7', data=drop6, num_hidden=4096)
relu7 = mx.symbol.Activation(name='relu7', data=fc7, act_type="relu")
drop7 = mx.symbol.Dropout(name='drop7', data=relu7, p=0.5) if training else relu7
self.__output = self.add_head_nodes(drop7)
def __init__(self, params):
Model.check_parameters(
params,
{'name': 'AlexNet', 'input_shape':(3, 227, 227), 'num_classes': 1000,
'phase': 'training',
'dtype': 'float32'}
)
Model.__init__(self, params)
training = self.phase == 'training'
data = self.add_data_node()
conv1 = mx.symbol.Convolution(name='conv1', data=data, kernel=(11, 11), stride=(4, 4), num_filter=96)
relu1 = mx.symbol.Activation(name='relu1', data=conv1, act_type='relu')
norm1 = self.maybe_lrn(relu1, 'norm1')
pool1 = mx.symbol.Pooling(name='pool1', data=norm1, pool_type="max", kernel=(3, 3), stride=(2, 2))
conv2 = mx.symbol.Convolution(name='conv2', data=pool1, kernel=(5, 5), pad=(2, 2), num_filter=256, num_group=1)
relu2 = mx.symbol.Activation(name='relu2', data=conv2, act_type="relu")
norm2 = self.maybe_lrn(relu2, 'norm2')
pool2 = mx.symbol.Pooling(name='pool2', data=norm2, kernel=(3, 3), stride=(2, 2), pool_type="max")
conv3 = mx.symbol.Convolution(name='conv3', data=pool2, kernel=(3, 3), pad=(1, 1), num_filter=384)
relu3 = mx.symbol.Activation(name='relu3', data=conv3, act_type="relu")
conv4 = mx.symbol.Convolution(name='conv4', data=relu3, kernel=(3, 3), pad=(1, 1), num_filter=384, num_group=1)
relu4 = mx.symbol.Activation(name='relu4', data=conv4, act_type="relu")
conv5 = mx.symbol.Convolution(name='conv5', data=relu4, kernel=(3, 3), pad=(1, 1), num_filter=256, num_group=1)
relu5 = mx.symbol.Activation(name='relu5', data=conv5, act_type="relu")
pool5 = mx.symbol.Pooling(name='pool5', data=relu5, kernel=(3, 3), stride=(2, 2), pool_type="max")
flatten = mx.symbol.Flatten(data=pool5)
fc6 = mx.symbol.FullyConnected(name='fc6', data=flatten, num_hidden=4096)
relu6 = mx.symbol.Activation(name='relu6', data=fc6, act_type="relu")
drop6 = mx.symbol.Dropout(name='drop6', data=relu6, p=0.5) if training else relu6
fc7 = mx.symbol.FullyConnected(name='fc7', data=drop6, num_hidden=4096)
relu7 = mx.symbol.Activation(name='relu7', data=fc7, act_type="relu")
drop7 = mx.symbol.Dropout(name='drop7', data=relu7, p=0.5) if training else relu7
self.__output = self.add_head_nodes(drop7)
def __init__(self, params):
specs = ResNet.specs[params['model']]
Model.check_parameters(
params, {
'name': specs['name'],
'num_classes': 1000,
'phase': 'training',
'dtype': 'float32',
'input_layout': 'NCHW',
'model_layout': 'NCHW',
'nvidia_layers': False,
'workspace': 1024
})
params['input_shape'] = Model.conv_shape(3, (224, 224),
params['input_layout'])
Model.__init__(self, params)
self.params = params
self.layers = Layers(params)
# Adapted from https://github.com/tornadomeet/ResNet/blob/master/train_resnet.py
# Original author Wei Wu
# Some optimizations are taken from NVIDIA code from NGC containers.
if specs['num_layers'] >= 50:
filter_list = [64, 256, 512, 1024, 2048]
bottle_neck = True
else:
filter_list = [64, 64, 128, 256, 512]
bottle_neck = False
self.__output = self.resnet(units=specs['units'],
num_stages=4,
filter_list=filter_list,
bottle_neck=bottle_neck,
workspace=params['workspace'],
fuse_bn_add_relu=params['nvidia_layers'],
fuse_bn_relu=params['nvidia_layers'])
def __init__(self, params):
Model.check_parameters(
params, {
'name': 'Overfeat',
'input_shape': (3, 231, 231),
'num_classes': 1000,
'phase': 'training',
'dtype': 'float32'
})
Model.__init__(self, params)
training = self.phase == 'training'
data = self.add_data_node()
# Layer1
conv1 = mx.symbol.Convolution(name='conv1',
data=data,
kernel=(11, 11),
stride=(4, 4),
num_filter=96)
relu1 = mx.symbol.Activation(name='relu1', data=conv1, act_type='relu')
pool1 = mx.symbol.Pooling(name='pool1',
data=relu1,
pool_type="max",
kernel=(2, 2),
stride=(2, 2))
# Layer2
conv2 = mx.symbol.Convolution(name='conv2',
data=pool1,
kernel=(5, 5),
num_filter=256)
relu2 = mx.symbol.Activation(name='relu2', data=conv2, act_type="relu")
pool2 = mx.symbol.Pooling(name='pool2',
data=relu2,
kernel=(2, 2),
stride=(2, 2),
pool_type="max")
# Layer3
conv3 = mx.symbol.Convolution(name='conv3',
data=pool2,
kernel=(3, 3),
pad=(1, 1),
num_filter=512)
relu3 = mx.symbol.Activation(name='relu3', data=conv3, act_type="relu")
# Layer4
conv4 = mx.symbol.Convolution(name='conv4',
data=relu3,
kernel=(3, 3),
pad=(1, 1),
num_filter=1024)
relu4 = mx.symbol.Activation(name='relu4', data=conv4, act_type="relu")
# Layer5
conv5 = mx.symbol.Convolution(name='conv5',
data=relu4,
kernel=(3, 3),
pad=(1, 1),
num_filter=1024)
relu5 = mx.symbol.Activation(name='relu5', data=conv5, act_type="relu")
pool5 = mx.symbol.Pooling(name='pool5',
data=relu5,
kernel=(2, 2),
stride=(2, 2),
pool_type="max")
# Layer6
flatten = mx.symbol.Flatten(data=pool5)
fc6 = mx.symbol.FullyConnected(name='fc6',
data=flatten,
num_hidden=3072)
relu6 = mx.symbol.Activation(name='relu6', data=fc6, act_type="relu")
drop6 = mx.symbol.Dropout(name='drop6', data=relu6,
p=0.5) if training else relu6
# Layer7
fc7 = mx.symbol.FullyConnected(name='fc7', data=drop6, num_hidden=4096)
relu7 = mx.symbol.Activation(name='relu7', data=fc7, act_type="relu")
drop7 = mx.symbol.Dropout(name='drop7', data=relu7,
p=0.5) if training else relu7
self.__output = self.add_head_nodes(drop7)
def __init__(self, params):
# Common parameters for all models
Model.check_parameters(
params,
{
'name': 'DeepSpeech2',
'input_shape': (1, 200, 161),
'num_classes':
29 * 29 + 1, # Alphabet size + BLANK character (which is 0)
'phase': 'training',
'dtype': 'float32',
'model_opts': {}
})
# Specific parameters for DeepSpeech2
Model.check_parameters(
params['model_opts'],
{
'conv_batch_norm': True, # Use BatchNorm in Conv layers
'conv_arch': '2-layer-2D-v2', # Conv layers architecture
'num_rnn_layers': 3, # Number of RNN layers
'rnn_layer_size': 2048, # Hidden size of each RNN
'bidirectional': True, # Use bidirectional RNN
'rnn_type': 'rnn_relu', # One of RNN_TYPES
'rnn_batch_norm':
False, # Use Batch norm in RNNs after i2h matrix. DOES NOT WORK NOW.
'brnn_share_i2h':
False, # Share i2h weights in RNNs. DOES NOT WORK NOW.
'brnn_output':
'concat', # Aggregate method for BRNN outputs. One of BRNN_OUTPUT
'rnn_dropout': 0.0, # Use dropout in RNNs. Value from [0, 1).
'ctc_loss':
'mxnet_ctc_loss' # CTC Loss implementation, one of CTC_LOSSES
})
Model.__init__(self, params)
self.__batch_size = params['batch_size']
self.__output_length = 0 # [output] Length of output sequence
self.__data_shape = (
self.batch_size, ) + self.input_shape # For debugging purposses
self.__debug = logging.getLogger().isEnabledFor(
logging.DEBUG) or os.environ.get('DLBS_DEBUG', '0') == '1'
if self.model_opts['conv_arch'] not in DeepSpeech2.CONV_ARCHS:
raise "Invalid conv arch ('%s'), must be one of '%s'" % \
(self.model_opts['conv_arch'], str(DeepSpeech2.CONV_ARCHS))
if self.model_opts['rnn_type'] not in DeepSpeech2.RNN_TYPES:
raise "Invalid RNN type ('%s'), must be one of '%s'" % \
(self.model_opts['rnn_type'], str(DeepSpeech2.RNN_TYPES))
if self.model_opts['brnn_output'] not in DeepSpeech2.BRNN_OUTPUT:
raise "Invalid BRNN output function ('%s'), must be one of '%s'" % \
(self.model_opts['brnn_output'], str(DeepSpeech2.BRNN_OUTPUT))
if self.model_opts['ctc_loss'] not in DeepSpeech2.CTC_LOSSES:
raise "Invalid ctc loss ('%s'), must be one of '%s'" % \
(self.model_opts['ctc_loss'], str(DeepSpeech2.CTC_LOSSES))
if self.model_opts['rnn_batch_norm'] is True:
self.model_opts['rnn_batch_norm'] = False
print("[WARNING] Batch norm is not supported in RNNs.")
if self.model_opts['brnn_share_i2h'] is True:
self.model_opts['brnn_share_i2h'] = False
print(
"[WARNING] Sharing input2hidden weights in BRNNs is not supported."
)
print("Model options: " + str(self.model_opts))
# This helps debugging shapes
logging.debug("Batch size: %d", self.batch_size)
logging.debug("Input length: %d", self.input_shape[1])
logging.debug("Num input features: %d", self.input_shape[2])
# Input data v is a spectrogram
v = self.add_data_node() # [Batch, 1, DatumLen, DatumFeatures]
self.log_shape("Input shape: %s", v)
# 1-3 layers of 1D or 2D convolutions
v, length = self.add_conv_layers(v) # [Batch, 1, CnnLen, CnnFeatures]
# Add RNN layers
v, nrnn_features = self.add_rnn_layers(
v, length) # [CnnLen, Batch, RnnFeatures]
# Compute CTC loss
v = mx.sym.Reshape(
data=v, shape=(-1, nrnn_features)) # [CnnLen*Batch, RnnFeatures]
self.log_shape("FC input shape: %s", v)
v = mx.sym.FullyConnected(
data=v,
num_hidden=self.num_classes) # [CnnLen*Batch, self.num_classes]
self.log_shape("FC output shape: %s", v)
if self.dtype == 'float16':
print("Casting logits to np.float32")
v = mx.sym.cast(data=v, dtype=np.float32)
if self.phase == 'training':
# [CnnLen, Batch, NumClasses(alphabet+1)]
v_ctc = mx.sym.Reshape(data=v,
shape=(length, self.batch_size,
self.num_classes))
labels = mx.sym.Variable(name="softmax_label",
shape=(self.batch_size, length),
init=mx.init.Zero())
self.log_shape("CTC input shape: %s", v_ctc)
if self.model_opts['ctc_loss'] == 'warp_ctc_loss':
print("Using Baidu's Warp CTC Loss.")
print("[WARNING] WarpCTC was not tested and may not work.")
try:
v = mx.symbol.WarpCTC(data=v_ctc, label=labels)
except AttributeError:
print(
"[ERROR] WarpCTC symbol is not available. Recompile MXNET with WarpCTC support."
)
raise
else:
print("Using CTCLoss from mx.symbol.contrib.")
# data: (sequence_length, batch_size, alphabet_size + 1)
# The 0th element of this vector is reserved for the special blank character.
# label: (batch_size, label_sequence_length)
# Is a tensor of integers between 1 and alphabet_size.
# out: (batch_size)
# Is a list of CTC loss values, one per example in the batch.
ctc_loss = mx.sym.MakeLoss(
mx.symbol.contrib.CTCLoss(data=v_ctc,
label=labels,
name='ctc'))
predictions = mx.sym.MakeLoss(
mx.sym.SoftmaxActivation(data=v, name='softmax'))
v = mx.sym.Group([mx.sym.BlockGrad(predictions), ctc_loss])
else:
v = mx.symbol.softmax(data=v, name='softmax')
self.log_shape("Output shape: %s", v)
self.__output = v
self.__output_length = length # We have this many labels per input sequence.
self._labels_shape = (self.__output_length,
) # K labels for every batch
self._labels_range = (
1, self.num_classes
) # The class '0' is reserved for BLANK character.
self.__ctc_metrics = CtcMetrics(seq_len=self.__output_length)
self._eval_metric = mx.metric.CustomMetric(
feval=self.__ctc_metrics.accuracy,
name='ctc_metric',
allow_extra_outputs=True)
def __init__(self, params):
""" Naming and topology according to: http://ethereon.github.io/netscope/#/gist/f2e4825a8d4f8a3609cefd7ffadc910a
Based on: https://github.com/dmlc/mxnet/blob/master/example/image-classification/symbols/alexnet.py
"""
Model.check_parameters(
params, {
'name': 'GoogleNet',
'input_shape': (3, 224, 224),
'num_classes': 1000,
'phase': 'training',
'dtype': 'float32'
})
Model.__init__(self, params)
training = self.phase == 'training'
data = self.add_data_node()
conv1 = ConvFactory(data,
64,
kernel=(7, 7),
stride=(2, 2),
pad=(3, 3),
name="conv1/7x7_s2")
pool1 = mx.sym.Pooling(conv1,
kernel=(3, 3),
stride=(2, 2),
pool_type="max",
name="pool1/3x3_s2")
norm1 = mx.symbol.LRN(data=pool1,
alpha=0.0001,
beta=0.75,
knorm=2,
nsize=5,
name='pool1/norm1')
conv2_reduce = ConvFactory(norm1,
64,
kernel=(1, 1),
stride=(1, 1),
name="conv2/3x3_reduce")
conv2 = ConvFactory(conv2_reduce,
192,
kernel=(3, 3),
stride=(1, 1),
pad=(1, 1),
name="conv2/3x3")
norm2 = mx.symbol.LRN(data=conv2,
alpha=0.0001,
beta=0.75,
knorm=2,
nsize=5,
name='conv2/norm2')
pool2 = mx.sym.Pooling(norm2,
kernel=(3, 3),
stride=(2, 2),
pool_type="max",
name='pool2/3x3_s2')
in3a = InceptionFactory(pool2,
64,
96,
128,
16,
32,
"max",
32,
name="inception_3a")
in3b = InceptionFactory(in3a,
128,
128,
192,
32,
96,
"max",
64,
name="inception_3b")
pool3 = mx.sym.Pooling(in3b,
kernel=(3, 3),
stride=(2, 2),
pool_type="max",
name='pool3/3x3_s2')
in4a = InceptionFactory(pool3,
192,
96,
208,
16,
48,
"max",
64,
name="inception_4a")
in4b = InceptionFactory(in4a,
160,
112,
224,
24,
64,
"max",
64,
name="inception_4b")
in4c = InceptionFactory(in4b,
128,
128,
256,
24,
64,
"max",
64,
name="inception_4c")
in4d = InceptionFactory(in4c,
112,
144,
288,
32,
64,
"max",
64,
name="inception_4d")
in4e = InceptionFactory(in4d,
256,
160,
320,
32,
128,
"max",
128,
name="inception_4e")
pool4 = mx.sym.Pooling(in4e,
kernel=(3, 3),
stride=(2, 2),
pad=(1, 1),
pool_type="max",
name='pool4/3x3_s2')
in5a = InceptionFactory(pool4,
256,
160,
320,
32,
128,
"max",
128,
name="inception_5a")
in5b = InceptionFactory(in5a,
384,
192,
384,
48,
128,
"max",
128,
name="inception_5b")
pool5 = mx.sym.Pooling(in5b,
kernel=(7, 7),
stride=(1, 1),
pool_type="avg",
name='pool5/7x7_s1')
flatten5 = mx.sym.Flatten(data=pool5)
drop5 = mx.symbol.Dropout(
data=flatten5, p=0.5,
name='pool5/drop_7x7_s1') if training else flatten5
self.__output = self.add_head_nodes(drop5)
def __init__(self, params):
Model.check_parameters(
params, {
'name': 'AlexNetOWT',
'num_classes': 1000,
'phase': 'training',
'dtype': 'float32',
'input_layout': 'NCHW',
'model_layout': 'NCHW',
'nvidia_layers': False
})
params['input_shape'] = Model.conv_shape(3, (227, 227),
params['input_layout'])
Model.__init__(self, params)
layers = Layers(params)
data = self.add_data_node()
data = Layers.conv_transform_layout(data, params['input_layout'],
params['model_layout'])
conv1 = layers.Convolution(name='conv1',
data=data,
kernel=(11, 11),
stride=(4, 4),
num_filter=64)
relu1 = layers.Activation(name='relu1', data=conv1, act_type='relu')
pool1 = layers.Pooling(name='pool1',
data=relu1,
pool_type="max",
kernel=(3, 3),
stride=(2, 2))
conv2 = layers.Convolution(name='conv2',
data=pool1,
kernel=(5, 5),
pad=(2, 2),
num_filter=192)
relu2 = layers.Activation(name='relu2', data=conv2, act_type="relu")
pool2 = layers.Pooling(name='pool2',
data=relu2,
kernel=(3, 3),
stride=(2, 2),
pool_type="max")
conv3 = layers.Convolution(name='conv3',
data=pool2,
kernel=(3, 3),
pad=(1, 1),
num_filter=384)
relu3 = layers.Activation(name='relu3', data=conv3, act_type="relu")
conv4 = layers.Convolution(name='conv4',
data=relu3,
kernel=(3, 3),
pad=(1, 1),
num_filter=256)
relu4 = layers.Activation(name='relu4', data=conv4, act_type="relu")
conv5 = layers.Convolution(name='conv5',
data=relu4,
kernel=(3, 3),
pad=(1, 1),
num_filter=256)
relu5 = layers.Activation(name='relu5', data=conv5, act_type="relu")
pool5 = layers.Pooling(name='pool5',
data=relu5,
kernel=(3, 3),
stride=(2, 2),
pool_type="max")
flatten = mx.symbol.Flatten(data=pool5)
fc6 = mx.symbol.FullyConnected(name='fc6',
data=flatten,
num_hidden=4096)
relu6 = layers.Activation(name='relu6', data=fc6, act_type="relu")
drop6 = layers.Dropout(name='drop6', data=relu6, p=0.5)
fc7 = mx.symbol.FullyConnected(name='fc7', data=drop6, num_hidden=4096)
relu7 = layers.Activation(name='relu7', data=fc7, act_type="relu")
drop7 = layers.Dropout(name='drop7', data=relu7, p=0.5)
self.__output = self.add_head_nodes(drop7)
def __init__(self, params):
""" """
Model.check_parameters(
params, {
'name': 'InceptionResNetV2',
'input_shape': (3, 299, 299),
'num_classes': 1000,
'phase': 'training',
'dtype': 'float32'
})
Model.__init__(self, params)
data = self.add_data_node()
conv1a_3_3 = ConvFactory(data=data,
num_filter=32,
kernel=(3, 3),
stride=(2, 2))
conv2a_3_3 = ConvFactory(conv1a_3_3, 32, (3, 3))
conv2b_3_3 = ConvFactory(conv2a_3_3, 64, (3, 3), pad=(1, 1))
maxpool3a_3_3 = mx.symbol.Pooling(data=conv2b_3_3,
kernel=(3, 3),
stride=(2, 2),
pool_type='max')
conv3b_1_1 = ConvFactory(maxpool3a_3_3, 80, (1, 1))
conv4a_3_3 = ConvFactory(conv3b_1_1, 192, (3, 3))
maxpool5a_3_3 = mx.symbol.Pooling(data=conv4a_3_3,
kernel=(3, 3),
stride=(2, 2),
pool_type='max')
tower_conv = ConvFactory(maxpool5a_3_3, 96, (1, 1))
tower_conv1_0 = ConvFactory(maxpool5a_3_3, 48, (1, 1))
tower_conv1_1 = ConvFactory(tower_conv1_0, 64, (5, 5), pad=(2, 2))
tower_conv2_0 = ConvFactory(maxpool5a_3_3, 64, (1, 1))
tower_conv2_1 = ConvFactory(tower_conv2_0, 96, (3, 3), pad=(1, 1))
tower_conv2_2 = ConvFactory(tower_conv2_1, 96, (3, 3), pad=(1, 1))
tower_pool3_0 = mx.symbol.Pooling(data=maxpool5a_3_3,
kernel=(3, 3),
stride=(1, 1),
pad=(1, 1),
pool_type='avg')
tower_conv3_1 = ConvFactory(tower_pool3_0, 64, (1, 1))
tower_5b_out = mx.symbol.Concat(
*[tower_conv, tower_conv1_1, tower_conv2_2, tower_conv3_1])
net = repeat(tower_5b_out,
10,
block35,
scale=0.17,
input_num_channels=320)
tower_conv = ConvFactory(net, 384, (3, 3), stride=(2, 2))
tower_conv1_0 = ConvFactory(net, 256, (1, 1))
tower_conv1_1 = ConvFactory(tower_conv1_0, 256, (3, 3), pad=(1, 1))
tower_conv1_2 = ConvFactory(tower_conv1_1, 384, (3, 3), stride=(2, 2))
tower_pool = mx.symbol.Pooling(net,
kernel=(3, 3),
stride=(2, 2),
pool_type='max')
net = mx.symbol.Concat(*[tower_conv, tower_conv1_2, tower_pool])
net = repeat(net, 20, block17, scale=0.1, input_num_channels=1088)
tower_conv = ConvFactory(net, 256, (1, 1))
tower_conv0_1 = ConvFactory(tower_conv, 384, (3, 3), stride=(2, 2))
tower_conv1 = ConvFactory(net, 256, (1, 1))
tower_conv1_1 = ConvFactory(tower_conv1, 288, (3, 3), stride=(2, 2))
tower_conv2 = ConvFactory(net, 256, (1, 1))
tower_conv2_1 = ConvFactory(tower_conv2, 288, (3, 3), pad=(1, 1))
tower_conv2_2 = ConvFactory(tower_conv2_1, 320, (3, 3), stride=(2, 2))
tower_pool = mx.symbol.Pooling(net,
kernel=(3, 3),
stride=(2, 2),
pool_type='max')
net = mx.symbol.Concat(
*[tower_conv0_1, tower_conv1_1, tower_conv2_2, tower_pool])
net = repeat(net, 9, block8, scale=0.2, input_num_channels=2080)
net = block8(net, with_act=False, input_num_channels=2080)
net = ConvFactory(net, 1536, (1, 1))
net = mx.symbol.Pooling(net,
kernel=(1, 1),
global_pool=True,
stride=(2, 2),
pool_type='avg')
net = mx.symbol.Flatten(net)
if self.phase == 'training':
net = mx.symbol.Dropout(data=net, p=0.2)
self.__output = self.add_head_nodes(net)
def __init__(self, params):
""" Naming and topology according to: http://ethereon.github.io/netscope/#/gist/f2e4825a8d4f8a3609cefd7ffadc910a
Based on: https://github.com/dmlc/mxnet/blob/master/example/image-classification/symbols/alexnet.py
"""
Model.check_parameters(
params, {
'name': 'GoogleNet',
'input_shape': (3, 224, 224),
'num_classes': 1000,
'phase': 'training',
'dtype': 'float32'
})
Model.__init__(self, params)
if self.dtype == 'float16':
print("[WARNING] MxNet does not provide half precision kernel for LRN layer. It will be disabled. "\
"Thus, comparison with single precision version or other frameworks will not be totally fair.")
training = self.phase == 'training'
data = self.add_data_node()
conv1 = ConvFactory(data,
64,
kernel=(7, 7),
stride=(2, 2),
pad=(3, 3),
name="conv1/7x7_s2")
pool1 = mx.sym.Pooling(conv1,
kernel=(3, 3),
stride=(2, 2),
pool_type="max",
name="pool1/3x3_s2")
norm1 = self.maybe_lrn(pool1, 'pool1/norm1')
conv2_reduce = ConvFactory(norm1,
64,
kernel=(1, 1),
stride=(1, 1),
name="conv2/3x3_reduce")
conv2 = ConvFactory(conv2_reduce,
192,
kernel=(3, 3),
stride=(1, 1),
pad=(1, 1),
name="conv2/3x3")
norm2 = self.maybe_lrn(conv2, 'conv2/norm2')
pool2 = mx.sym.Pooling(norm2,
kernel=(3, 3),
stride=(2, 2),
pool_type="max",
name='pool2/3x3_s2')
in3a = InceptionFactory(pool2,
64,
96,
128,
16,
32,
"max",
32,
name="inception_3a")
in3b = InceptionFactory(in3a,
128,
128,
192,
32,
96,
"max",
64,
name="inception_3b")
pool3 = mx.sym.Pooling(in3b,
kernel=(3, 3),
stride=(2, 2),
pool_type="max",
name='pool3/3x3_s2')
in4a = InceptionFactory(pool3,
192,
96,
208,
16,
48,
"max",
64,
name="inception_4a")
in4b = InceptionFactory(in4a,
160,
112,
224,
24,
64,
"max",
64,
name="inception_4b")
in4c = InceptionFactory(in4b,
128,
128,
256,
24,
64,
"max",
64,
name="inception_4c")
in4d = InceptionFactory(in4c,
112,
144,
288,
32,
64,
"max",
64,
name="inception_4d")
in4e = InceptionFactory(in4d,
256,
160,
320,
32,
128,
"max",
128,
name="inception_4e")
pool4 = mx.sym.Pooling(in4e,
kernel=(3, 3),
stride=(2, 2),
pad=(1, 1),
pool_type="max",
name='pool4/3x3_s2')
in5a = InceptionFactory(pool4,
256,
160,
320,
32,
128,
"max",
128,
name="inception_5a")
in5b = InceptionFactory(in5a,
384,
192,
384,
48,
128,
"max",
128,
name="inception_5b")
pool5 = mx.sym.Pooling(in5b,
kernel=(7, 7),
stride=(1, 1),
pool_type="avg",
name='pool5/7x7_s1')
flatten5 = mx.sym.Flatten(data=pool5)
drop5 = mx.symbol.Dropout(
data=flatten5, p=0.5,
name='pool5/drop_7x7_s1') if training else flatten5
self.__output = self.add_head_nodes(drop5)
