def __init__(self, num_classes=10, classifier_activation=None):
super(LeNetDygraph, self).__init__()
self.num_classes = num_classes
self.features = Sequential(Conv2d(1, 6, 3, stride=1,
padding=1), ReLU(),
Pool2D(2, 'max', 2),
Conv2d(6, 16, 5, stride=1, padding=0),
ReLU(), Pool2D(2, 'max', 2))
if num_classes > 0:
self.fc = Sequential(Linear(400, 120), Linear(120, 84),
Linear(84, 10),
Softmax()) #Todo: accept any activation
def __init__(self,
num_channels: int,
num_filters: int,
filter_size: int,
stride: int = 1,
groups: int = 1,
act: str = None,
name: str = None):
super(ConvBNLayer, self).__init__()
self._conv = Conv2d(in_channels=num_channels,
out_channels=num_filters,
kernel_size=filter_size,
stride=stride,
padding=(filter_size - 1) // 2,
groups=groups,
weight_attr=ParamAttr(name=name + "_weights"),
bias_attr=False)
if name == "conv1":
bn_name = "bn_" + name
else:
bn_name = "bn" + name[3:]
self._batch_norm = BatchNorm(
num_filters,
act=act,
param_attr=ParamAttr(name=bn_name + '_scale'),
bias_attr=ParamAttr(bn_name + '_offset'),
moving_mean_name=bn_name + '_mean',
moving_variance_name=bn_name + '_variance')
def __init__(self,
num_channels: int,
filter_size: int,
num_filters: int,
stride: int,
padding: int,
channels: int = None,
num_groups: int = 1,
act: str = 'relu',
name: str = None):
super(ConvBNLayer, self).__init__()
self._conv = Conv2d(in_channels=num_channels,
out_channels=num_filters,
kernel_size=filter_size,
stride=stride,
padding=padding,
groups=num_groups,
weight_attr=ParamAttr(initializer=MSRA(),
name=name + "_weights"),
bias_attr=False)
self._batch_norm = BatchNorm(num_filters,
act=act,
param_attr=ParamAttr(name + "_bn_scale"),
bias_attr=ParamAttr(name + "_bn_offset"),
moving_mean_name=name + "_bn_mean",
moving_variance_name=name +
"_bn_variance")
def __init__(self,
num_channels,
num_filters,
filter_size,
stride=1,
padding=0,
stddev=0.02,
norm=True,
act='leaky_relu',
relufactor=0.0,
use_bias=False):
super(ConvBN, self).__init__()
pattr = paddle.ParamAttr(
initializer=nn.initializer.Normal(loc=0.0, scale=stddev))
self.conv = Conv2d(in_channels=num_channels,
out_channels=num_filters,
kernel_size=filter_size,
stride=stride,
padding=padding,
weight_attr=pattr,
bias_attr=use_bias)
if norm:
self.bn = BatchNorm(
num_filters,
param_attr=paddle.ParamAttr(
initializer=nn.initializer.Normal(1.0, 0.02)),
bias_attr=paddle.ParamAttr(
initializer=nn.initializer.Constant(0.0)),
is_test=False,
trainable_statistics=True)
self.relufactor = relufactor
self.norm = norm
self.act = act
def __init__(self,
input_channels: int,
output_channels: int,
stride: int = 2,
name: str = None,
relu_first: bool = False):
super(EntryFlowBottleneckBlock, self).__init__()
self.relu_first = relu_first
self._short = Conv2d(in_channels=input_channels,
out_channels=output_channels,
kernel_size=1,
stride=stride,
padding=0,
weight_attr=ParamAttr(name + "_branch1_weights"),
bias_attr=False)
self._conv1 = SeparableConv(input_channels,
output_channels,
stride=1,
name=name + "_branch2a_weights")
self._conv2 = SeparableConv(output_channels,
output_channels,
stride=1,
name=name + "_branch2b_weights")
self._pool = MaxPool2d(kernel_size=3, stride=stride, padding=1)
def __init__(self,
in_c: int,
out_c: int,
filter_size: int,
stride: int,
padding: int,
num_groups: int = 1,
if_act: bool = True,
act: str = None,
name: str = ""):
super(ConvBNLayer, self).__init__()
self.if_act = if_act
self.act = act
self.conv = Conv2d(in_channels=in_c,
out_channels=out_c,
kernel_size=filter_size,
stride=stride,
padding=padding,
groups=num_groups,
weight_attr=ParamAttr(name=name + "_weights"),
bias_attr=False)
self.bn = BatchNorm(num_channels=out_c,
act=None,
param_attr=ParamAttr(name=name + "_bn_scale",
regularizer=L2Decay(0.0)),
bias_attr=ParamAttr(name=name + "_bn_offset",
regularizer=L2Decay(0.0)),
moving_mean_name=name + "_bn_mean",
moving_variance_name=name + "_bn_variance")
def make_layers(cfg, batch_norm=False):
layers = []
in_channels = 3
for v in cfg:
if v == 'M':
layers += [Pool2D(pool_size=2, pool_stride=2)]
else:
if batch_norm:
conv2d = Conv2d(in_channels, v, kernel_size=3, padding=1)
layers += [conv2d, BatchNorm(v), ReLU()]
else:
conv2d = Conv2d(in_channels, v, kernel_size=3, padding=1)
layers += [conv2d, ReLU()]
in_channels = v
return Sequential(*layers)
def __init__(self,
num_channels: int,
filter_size: int,
num_filters: int,
stride: int,
padding: int,
channels: int = None,
num_groups: int = 1,
if_act: bool = True,
act: str = 'relu',
name: str = None):
super(ConvBNLayer, self).__init__()
self._if_act = if_act
assert act in ['relu', 'swish'], \
"supported act are {} but your act is {}".format(
['relu', 'swish'], act)
self._act = act
self._conv = Conv2d(in_channels=num_channels,
out_channels=num_filters,
kernel_size=filter_size,
stride=stride,
padding=padding,
groups=num_groups,
weight_attr=ParamAttr(initializer=MSRA(),
name=name + "_weights"),
bias_attr=False)
self._batch_norm = BatchNorm(
num_filters,
param_attr=ParamAttr(name=name + "_bn_scale"),
bias_attr=ParamAttr(name=name + "_bn_offset"),
moving_mean_name=name + "_bn_mean",
moving_variance_name=name + "_bn_variance")
def __init__(self, channel: int, reduction: int = 4, name: str = ""):
super(SEModule, self).__init__()
self.avg_pool = AdaptiveAvgPool2d(1)
self.conv1 = Conv2d(in_channels=channel,
out_channels=channel // reduction,
kernel_size=1,
stride=1,
padding=0,
weight_attr=ParamAttr(name=name + "_1_weights"),
bias_attr=ParamAttr(name=name + "_1_offset"))
self.conv2 = Conv2d(in_channels=channel // reduction,
out_channels=channel,
kernel_size=1,
stride=1,
padding=0,
weight_attr=ParamAttr(name + "_2_weights"),
bias_attr=ParamAttr(name=name + "_2_offset"))
def __init__(self,
input_channels: int,
output_channels: int,
filter_size: int,
stride: int = 1,
padding: int = 0,
groups: int = None,
name: str = "conv2d",
act: str = None,
use_bias: bool = False,
padding_type: str = None,
model_name: str = None,
cur_stage: str = None):
super(Conv2ds, self).__init__()
assert act in [None, "swish", "sigmoid"]
self.act = act
param_attr, bias_attr = initial_type(name=name, use_bias=use_bias)
def get_padding(filter_size, stride=1, dilation=1):
padding = ((stride - 1) + dilation * (filter_size - 1)) // 2
return padding
inps = 1 if model_name == None and cur_stage == None else inp_shape[
model_name][cur_stage]
self.need_crop = False
if padding_type == "SAME":
top_padding, bottom_padding = cal_padding(inps, stride,
filter_size)
left_padding, right_padding = cal_padding(inps, stride,
filter_size)
height_padding = bottom_padding
width_padding = right_padding
if top_padding != bottom_padding or left_padding != right_padding:
height_padding = top_padding + stride
width_padding = left_padding + stride
self.need_crop = True
padding = [height_padding, width_padding]
elif padding_type == "VALID":
height_padding = 0
width_padding = 0
padding = [height_padding, width_padding]
elif padding_type == "DYNAMIC":
padding = get_padding(filter_size, stride)
else:
padding = padding_type
groups = 1 if groups is None else groups
self._conv = Conv2d(input_channels,
output_channels,
filter_size,
groups=groups,
stride=stride,
padding=padding,
weight_attr=param_attr,
bias_attr=bias_attr)
def __init__(self, input_channels: int, output_channels1: int, output_channels2: int, name: str):
super(ExitFlowBottleneckBlock, self).__init__()
self._short = Conv2d(
in_channels=input_channels,
out_channels=output_channels2,
kernel_size=1,
stride=2,
padding=0,
weight_attr=ParamAttr(name + "_branch1_weights"),
bias_attr=False)
self._conv_1 = SeparableConv(input_channels, output_channels1, stride=1, name=name + "_branch2a_weights")
self._conv_2 = SeparableConv(output_channels1, output_channels2, stride=1, name=name + "_branch2b_weights")
self._pool = MaxPool2d(kernel_size=3, stride=2, padding=1)
def __init__(self,
num_channels: int,
num_filters: int,
filter_size: int,
stride: int = 1,
groups: int = 1,
name: str = None):
super(ConvLayer, self).__init__()
self._conv = Conv2d(in_channels=num_channels,
out_channels=num_filters,
kernel_size=filter_size,
stride=stride,
padding=(filter_size - 1) // 2,
groups=groups,
weight_attr=ParamAttr(name=name + "_weights"),
bias_attr=False)
def __init__(self,
dropout_prob: float = 0.2,
class_dim: int = 1000,
load_checkpoint: str = None):
super(MobileNetV3Small, self).__init__()
inplanes = 16
self.cfg = [
# k, exp, c, se, nl, s,
[3, 16, 16, True, "relu", 2],
[3, 72, 24, False, "relu", 2],
[3, 88, 24, False, "relu", 1],
[5, 96, 40, True, "hard_swish", 2],
[5, 240, 40, True, "hard_swish", 1],
[5, 240, 40, True, "hard_swish", 1],
[5, 120, 48, True, "hard_swish", 1],
[5, 144, 48, True, "hard_swish", 1],
[5, 288, 96, True, "hard_swish", 2],
[5, 576, 96, True, "hard_swish", 1],
[5, 576, 96, True, "hard_swish", 1],
]
self.cls_ch_squeeze = 576
self.cls_ch_expand = 1280
self.conv1 = ConvBNLayer(in_c=3,
out_c=make_divisible(inplanes),
filter_size=3,
stride=2,
padding=1,
num_groups=1,
if_act=True,
act="hard_swish",
name="conv1")
self.block_list = []
i = 0
inplanes = make_divisible(inplanes)
for (k, exp, c, se, nl, s) in self.cfg:
self.block_list.append(
ResidualUnit(in_c=inplanes,
mid_c=make_divisible(exp),
out_c=make_divisible(c),
filter_size=k,
stride=s,
use_se=se,
act=nl,
name="conv" + str(i + 2)))
self.add_sublayer(sublayer=self.block_list[-1],
name="conv" + str(i + 2))
inplanes = make_divisible(c)
i += 1
self.last_second_conv = ConvBNLayer(in_c=inplanes,
out_c=make_divisible(
self.cls_ch_squeeze),
filter_size=1,
stride=1,
padding=0,
num_groups=1,
if_act=True,
act="hard_swish",
name="conv_last")
self.pool = AdaptiveAvgPool2d(1)
self.last_conv = Conv2d(
in_channels=make_divisible(self.cls_ch_squeeze),
out_channels=self.cls_ch_expand,
kernel_size=1,
stride=1,
padding=0,
weight_attr=ParamAttr(name="last_1x1_conv_weights"),
bias_attr=False)
self.dropout = Dropout(p=dropout_prob, mode="downscale_in_infer")
self.out = Linear(self.cls_ch_expand,
class_dim,
weight_attr=ParamAttr("fc_weights"),
bias_attr=ParamAttr(name="fc_offset"))
if load_checkpoint is not None:
model_dict = paddle.load(load_checkpoint)[0]
self.set_dict(model_dict)
print("load custom checkpoint success")
else:
checkpoint = os.path.join(self.directory,
'mobilenet_v3_small_ssld.pdparams')
if not os.path.exists(checkpoint):
os.system(
'wget https://paddlehub.bj.bcebos.com/dygraph/image_classification/mobilenet_v3_small_ssld.pdparams -O '
+ checkpoint)
model_dict = paddle.load(checkpoint)[0]
self.set_dict(model_dict)
print("load pretrained checkpoint success")
