def channel_conv(input, inner_ch, out_ch, name):
conv = fluid.layers.conv2d(
input=input,
num_filters=inner_ch,
filter_size=1,
stride=1,
padding=0,
param_attr=ParamAttr(name=name + "_conv1_weights"),
bias_attr=ParamAttr(name=name + "_conv1_bias"),
name=name + "_conv1", )
conv = fluid.layers.layer_norm(
conv,
begin_norm_axis=1,
param_attr=ParamAttr(name=name + "_ln_weights"),
bias_attr=ParamAttr(name=name + "_ln_bias"),
act="relu",
name=name + "_ln")
conv = fluid.layers.conv2d(
input=conv,
num_filters=out_ch,
filter_size=1,
stride=1,
padding=0,
param_attr=ParamAttr(
name=name + "_conv2_weights",
initializer=ConstantInitializer(value=0.0), ),
bias_attr=ParamAttr(
name=name + "_conv2_bias",
initializer=ConstantInitializer(value=0.0), ),
name=name + "_conv2")
return conv
def bn_param_config(name='', affine=False, op=None):
gama_name = name + "_" + str(op) + "_gama"
beta_name = name + "_" + str(op) + "_beta"
gama = ParamAttr(name=gama_name,
initializer=ConstantInitializer(value=1),
trainable=affine)
beta = ParamAttr(name=beta_name,
initializer=ConstantInitializer(value=0),
trainable=affine)
return gama, beta
def _init_alphas(self):
n_ops = sum(range(2, 2 + self.n_nodes))
self.alphas_normal = fluid.layers.create_parameter(shape=[n_ops, len(PRIMITIVES)],
dtype="float32",
default_initializer=ConstantInitializer(value=0))
self.alphas_reduce = fluid.layers.create_parameter(shape=[n_ops, len(PRIMITIVES)],
dtype="float32",
default_initializer=ConstantInitializer(value=0))
# setup alphas list
self._alphas = [self.alphas_normal, self.alphas_reduce]
def model(x,
y,
c_in,
num_classes,
layers,
steps=4,
multiplier=4,
stem_multiplier=3,
name="model"):
c_curr = stem_multiplier * c_in
k = (1. / x.shape[1] / 3 / 3)**0.5
x = fluid.layers.conv2d(
x,
c_curr,
3,
padding=1,
param_attr=fluid.ParamAttr(name=name + "_conv_0",
initializer=UniformInitializer(low=-k,
high=k)),
bias_attr=False)
x = fluid.layers.batch_norm(
x,
param_attr=fluid.ParamAttr(name=name + "_bn0_scale",
initializer=ConstantInitializer(value=1)),
bias_attr=fluid.ParamAttr(name=name + "_bn0_offset",
initializer=ConstantInitializer(value=0)),
moving_mean_name=name + "_bn0_mean",
moving_variance_name=name + "_bn0_variance")
s0 = s1 = x
reduction_prev = False
c_curr = c_in
for i in range(layers):
if i in [layers // 3, 2 * layers // 3]:
c_curr *= 2
reduction = True
else:
reduction = False
s0, s1 = s1, cell(s0, s1, steps, multiplier, c_curr, reduction,
reduction_prev, name + "_l" + str(i))
reduction_prev = reduction
out = fluid.layers.pool2d(s1, pool_type='avg', global_pooling=True)
out = fluid.layers.squeeze(out, axes=[2, 3])
k = (1. / out.shape[1])**0.5
logits = fluid.layers.fc(
out,
num_classes,
param_attr=fluid.ParamAttr(name=name + "_fc_weights",
initializer=UniformInitializer(low=-k,
high=k)),
bias_attr=fluid.ParamAttr(name=name + "_fc_bias",
initializer=UniformInitializer(low=-k,
high=k)))
train_loss = fluid.layers.reduce_mean(
fluid.layers.softmax_with_cross_entropy(logits, y))
return logits, train_loss
def __init__(self,
c_in,
num_classes,
layers,
method,
steps=4,
multiplier=4,
stem_multiplier=3):
super(Network, self).__init__()
self._c_in = c_in
self._num_classes = num_classes
self._layers = layers
self._steps = steps
self._multiplier = multiplier
self._primitives = PRIMITIVES
self._method = method
c_cur = stem_multiplier * c_in
self.stem = fluid.dygraph.Sequential(
Conv2D(num_channels=3,
num_filters=c_cur,
filter_size=3,
padding=1,
param_attr=fluid.ParamAttr(initializer=MSRAInitializer()),
bias_attr=False),
BatchNorm(num_channels=c_cur,
param_attr=fluid.ParamAttr(
initializer=ConstantInitializer(value=1)),
bias_attr=fluid.ParamAttr(
initializer=ConstantInitializer(value=0))))
c_prev_prev, c_prev, c_cur = c_cur, c_cur, c_in
cells = []
reduction_prev = False
for i in range(layers):
if i in [layers // 3, 2 * layers // 3]:
c_cur *= 2
reduction = True
else:
reduction = False
cell = Cell(steps, multiplier, c_prev_prev, c_prev, c_cur,
reduction, reduction_prev, method)
reduction_prev = reduction
cells.append(cell)
c_prev_prev, c_prev = c_prev, multiplier * c_cur
self.cells = fluid.dygraph.LayerList(cells)
self.global_pooling = Pool2D(pool_type='avg', global_pooling=True)
self.classifier = Linear(
input_dim=c_prev,
output_dim=num_classes,
param_attr=ParamAttr(initializer=MSRAInitializer()),
bias_attr=ParamAttr(initializer=MSRAInitializer()))
self._initialize_alphas()
def _create_mask_variables(cls, main_program, startup_program,
params_and_grads):
r"""
Create sparse mask Tensors according to supported layers in :attr:`main_program`.
This function is called in second step of `ASPHelper._minimize`
Args:
main_program (Program): Program with model definition and its parameters.
startup_program (Program): Program for initializing parameters.
params_and_grads (list): Variable pairs of parameters and their gradients.
"""
asp_info = cls._get_program_asp_info(main_program)
with program_guard(main_program, startup_program):
for param_and_grad in params_and_grads:
if ASPHelper._is_supported_layer(main_program,
param_and_grad[0].name):
mask_param = layers.create_parameter(
name=param_and_grad[0].name +
ASPHelper.MASK_APPENDDED_NAME,
shape=param_and_grad[0].shape,
dtype=param_and_grad[0].dtype,
default_initializer=ConstantInitializer(value=1.0))
mask_param.stop_gradient = True
mask_param.trainable = False
asp_info.update_mask_vars(param_and_grad[0].name,
mask_param)
def __init__(self, memory, base_name, input_dim, output_dim, bias=True):
super(Linear, self).__init__()
self.input_dim = input_dim
self.output_dim = output_dim
self.base_name = base_name
self.memory = memory
self.w_name = "%s_weight" % base_name
self.b_name = "%s_bias" % base_name
start_block = memory.startup_program.global_block()
main_block = memory.main_program.current_block()
self.weight = start_block.create_parameter(
name=self.w_name,
dtype='float32',
shape=[input_dim, output_dim],
with_initializer=True,
initializer=XavierInitializer(uniform=True,
fan_in=input_dim,
fan_out=output_dim))
self.memory.add_weight(self.weight)
self.main_weight = main_block.create_parameter(
name=self.w_name, dtype='float32', shape=[input_dim, output_dim])
if bias:
self.bias = start_block.create_parameter(
name=self.b_name,
dtype='float32',
shape=[output_dim],
with_initializer=True,
initializer=ConstantInitializer(value=0.0))
self.memory.add_weight(self.bias)
self.main_bias = main_block.create_parameter(name=self.b_name,
dtype='float32',
shape=[output_dim])
self.call_count = 0
def __init__(self,
memory,
base_name,
in_channels,
out_channels,
kernel_size,
stride=1,
padding=0,
dilation=1,
groups=1,
bias=False):
super(Conv2d, self).__init__()
self.memory = memory
self.base_name = base_name
self.in_channels = in_channels
self.out_channels = out_channels
self.kernel_size = kernel_size
self.stride = stride
self.padding = padding
self.dilation = dilation
self.groups = groups
self.bias = bias
start_block = memory.startup_program.global_block()
main_block = memory.main_program.current_block()
conv_name = "%s_w" % self.base_name
self.kernel_size = _pair(self.kernel_size)
self.stride = _pair(self.stride)
self.padding = _pair(self.padding)
self.dilation = _pair(self.dilation)
def _get_default_param_initializer():
std = (2.0 / (self.kernel_size[0]**2 * self.in_channels))**0.5
return Normal(0.0, std, 0)
weight_shape = [self.out_channels, self.in_channels] + self.kernel_size
self.conv_weight = start_block.create_parameter(
name=conv_name,
dtype='float32',
shape=weight_shape,
with_initlializer=True,
initializer=_get_default_param_initializer())
self.memory.add_weight(self.conv_weight)
self.main_conv_weight = main_block.create_parameter(name=conv_name,
dtype='float32',
shape=weight_shape)
if bias:
self.b_name = "%s_bias" % self.base_name
self.bias = start_block.create_parameter(
name=self.b_name,
dtype='float32',
shape=[self.out_channels],
with_initializer=True,
intializer=ConstantInitializer(value=0.0))
self.memory.add_weight(self.bias)
self.main_bias = main_block.create_parameter(
name=self.b_name, dtype='float32', shape=[self.out_channels])
self.call_count = 0
def conv_bn(x, c_out, kernel_size, padding, stride, name):
k = (1. / x.shape[1] / kernel_size / kernel_size)**0.5
conv1 = fluid.layers.conv2d(
x,
c_out,
kernel_size,
stride=stride,
padding=padding,
param_attr=fluid.ParamAttr(
name=name + "_conv", initializer=UniformInitializer(
low=-k, high=k)),
bias_attr=False)
bn1 = fluid.layers.batch_norm(
conv1,
param_attr=fluid.ParamAttr(
name=name + "_bn_scale", initializer=ConstantInitializer(value=1)),
bias_attr=fluid.ParamAttr(
name=name + "_bn_offset", initializer=ConstantInitializer(value=0)),
moving_mean_name=name + "_bn_mean",
moving_variance_name=name + "_bn_variance")
return bn1
def __init__(self, c_curr, c_out, kernel_size, padding, stride, name=None):
super(ConvBN, self).__init__()
self.conv = Conv2D(
num_channels=c_curr,
num_filters=c_out,
filter_size=kernel_size,
stride=stride,
padding=padding,
param_attr=fluid.ParamAttr(name=name +
"_conv" if name is not None else None,
initializer=MSRAInitializer()),
bias_attr=False)
self.bn = BatchNorm(
num_channels=c_out,
param_attr=fluid.ParamAttr(
name=name + "_bn_scale" if name is not None else None,
initializer=ConstantInitializer(value=1)),
bias_attr=fluid.ParamAttr(
name=name + "_bn_offset" if name is not None else None,
initializer=ConstantInitializer(value=0)),
moving_mean_name=name + "_bn_mean" if name is not None else None,
moving_variance_name=name +
"_bn_variance" if name is not None else None)
def set_program(cls):
data = fluid.layers.data(name=cls.data_desc[0][0],
shape=cls.data_desc[0][1])
out = fluid.layers.fc(input=data,
size=cls.hidden_size,
param_attr=WeightNormParamAttr(
dim=None,
name='weight_norm_param',
initializer=ConstantInitializer(1.0)),
bias_attr=False,
act=None)
loss = fluid.layers.reduce_sum(out)
fluid.backward.append_backward(loss=loss)
cls.fetch_list = [
'weight_norm_param_g', 'weight_norm_param_v',
'weight_norm_param_g@GRAD'
]
def test_param(self):
shape = [784, 100]
val = 1.0625
b = main_program.global_block()
param = b.create_parameter(name='fc.w',
shape=shape,
dtype='float32',
initializer=ConstantInitializer(val))
self.assertIsNotNone(param)
self.assertEqual('fc.w', param.name)
self.assertEqual((784, 100), param.shape)
self.assertEqual(core.VarDesc.VarType.FP32, param.dtype)
self.assertEqual(0, param.block.idx)
exe = Executor(core.CPUPlace())
p = exe.run(main_program, fetch_list=[param])[0]
self.assertTrue(np.allclose(p, np.ones(shape) * val))
p = io.get_parameter_value_by_name('fc.w', exe, main_program)
self.assertTrue(np.allclose(np.array(p), np.ones(shape) * val))
def space_nonlocal(input,
dim_in,
dim_out,
prefix,
dim_inner,
with_bias=False,
with_scale=True):
theta = fluid.layers.conv2d(
input=input,
num_filters=dim_inner,
filter_size=1,
stride=1,
padding=0,
param_attr=ParamAttr(name=prefix + '_theta_w'),
bias_attr=ParamAttr(name=prefix + '_theta_b',
initializer=ConstantInitializer(
value=0.)) if with_bias else False)
theta_shape = theta.shape
theta_shape_op = fluid.layers.shape(theta)
theta_shape_op.stop_gradient = True
# we have to use explicit batch size (to support arbitrary spacetime size)
# e.g. (8, 1024, 4, 14, 14) => (8, 1024, 784)
theta = fluid.layers.reshape(theta, shape=(0, 0, -1))
theta = fluid.layers.transpose(theta, [0, 2, 1])
phi = fluid.layers.conv2d(
input=input,
num_filters=dim_inner,
filter_size=1,
stride=1,
padding=0,
param_attr=ParamAttr(name=prefix + '_phi_w'),
bias_attr=ParamAttr(name=prefix + '_phi_b',
initializer=ConstantInitializer(
value=0.)) if with_bias else False,
name=prefix + '_phi')
phi = fluid.layers.reshape(phi, [0, 0, -1])
theta_phi = fluid.layers.matmul(theta, phi)
g = fluid.layers.conv2d(
input=input,
num_filters=dim_inner,
filter_size=1,
stride=1,
padding=0,
param_attr=ParamAttr(name=prefix + '_g_w'),
bias_attr=ParamAttr(name=prefix + '_g_b',
initializer=ConstantInitializer(
value=0.)) if with_bias else False,
name=prefix + '_g')
g = fluid.layers.reshape(g, [0, 0, -1])
# scale
if with_scale:
theta_phi = fluid.layers.scale(theta_phi, scale=dim_inner**-.5)
p = fluid.layers.softmax(theta_phi)
# note g's axis[2] corresponds to p's axis[2]
# e.g. g(8, 1024, 784_2) * p(8, 784_1, 784_2) => (8, 1024, 784_1)
p = fluid.layers.transpose(p, [0, 2, 1])
t = fluid.layers.matmul(g, p)
# reshape back
# e.g. (8, 1024, 784) => (8, 1024, 4, 14, 14)
n = fluid.layers.slice(theta_shape_op, axes=[0], starts=[0], ends=[1])
h = fluid.layers.slice(theta_shape_op, axes=[0], starts=[2], ends=[3])
w = fluid.layers.slice(theta_shape_op, axes=[0], starts=[3], ends=[4])
ch = int(theta_shape[1])
t_re = fluid.layers.reshape(t, shape=[n, ch, h, w])
blob_out = t_re
blob_out = fluid.layers.conv2d(
input=blob_out,
num_filters=dim_out,
filter_size=1,
stride=1,
padding=0,
param_attr=ParamAttr(name=prefix + '_out_w',
initializer=ConstantInitializer(value=0.0)),
bias_attr=ParamAttr(name=prefix + '_out_b',
initializer=ConstantInitializer(
value=0.0)) if with_bias else False,
name=prefix + '_out')
blob_out_shape = blob_out.shape
return blob_out
def create_mpc_parameter(self,
attr,
shape,
dtype,
is_bias=False,
default_initializer=None,
stop_gradient=False,
type=core.VarDesc.VarType.LOD_TENSOR):
"""
Create mpc parameters for this layers.
Refer to LayerHelper.create_parameter in Paddle 1.7.
:param attr:
:param shape:
:param dtype:
:param is_bias:
:param default_initializer:
:param stop_gradient:
:param type:
:return:
"""
# Deepcopy the attr so that parameters can be shared in program
attr = copy.deepcopy(attr)
attr = ParamAttr._to_attr(attr)
if not attr:
return None
assert isinstance(attr, ParamAttr)
suffix = 'b' if is_bias else 'w'
if attr.name is None:
attr.name = unique_name.generate(".".join([self.name, suffix]))
if default_initializer is None and attr.initializer is None:
if isinstance(dtype, core.VarDesc.VarType):
if dtype != core.VarDesc.VarType.INT64:
raise TypeError(
"Can not create mpc parameter with default initializer "
"when dtype is not int64 type. Set default_initializer "
"to fit the parameter dtype!")
else:
if not dtype == "int64":
raise TypeError(
"Can not create mpc parameter with default initializer when "
"dtype is not int64 type. Set default_initializer to "
"fit the parameter dtype!")
if is_bias:
attr._set_default_bias_initializer()
else:
attr._set_default_initializer(ConstantInitializer(0))
else:
attr._set_default_initializer(default_initializer)
# TODO(xukun07): not support WeightNormParamAttr in this first version
# Paddle1.7: If weight normalization is set, insert extra parameters and ops.
# Refer to https://arxiv.org/pdf/1602.07868.pdf
if isinstance(attr, WeightNormParamAttr):
# param = self._create_weight_normalize(attr, shape, dtype)
# WeightNormParamAttr.params_with_weight_norm.append(param)
# return param
raise NotImplementedError(
"The WeightNormParamAttr for attr is not "
"supported in this version")
startup_program_global_block = self.startup_program.global_block()
create_mpc_parameter(block=startup_program_global_block,
dtype=dtype,
shape=shape,
type=type,
**attr._to_kwargs(with_initializer=True))
main_program_global_block = self.main_program.global_block()
return create_mpc_parameter(block=main_program_global_block,
dtype=dtype,
shape=shape,
type=type,
**attr._to_kwargs())
from paddle.fluid import Program
from paddle.fluid import Operator
from paddle.fluid.initializer import XavierInitializer
from paddle.fluid.initializer import ConstantInitializer
use_mkldnn = False
my_program = Program()
cur_block = my_program.current_block()
# implement y = Wx + b layer, input variable: W, x, b, output variable: y
# initlizer W->Xavier initlization, b->Constant initialization
x_var = cur_block.create_var(name='fc_x', shape=[-1, 128], dtype='float32')
y_var = cur_block.create_var(name='fc_y', shape=[-1, 64], dtype='float32')
Wx_var = cur_block.create_var(name='fc_Wx', shape=[-1, 64], dtype='float32')
xavier_init = XavierInitializer(uniform=True, fan_in=128, fan_out=64)
const_init = ConstantInitializer(value=0.0)
W_var = cur_block.create_parameter(name='fc_W',
dtype='float32',
shape=[128, 64],
initializer=xavier_init)
b_var = cur_block.create_parameter(name='fc_b',
dtype='float32',
shape=[64],
initializer=const_init)
mul_op_desc = cur_block.desc.append_op()
mul_op = Operator(block=cur_block,
desc=mul_op_desc,
type='mul',
inputs={
'X': x_var,
'Y': W_var
},
outputs={'Out': Wx_var},
def bn_param_config(affine=False):
gama = ParamAttr(initializer=ConstantInitializer(value=1),
trainable=affine)
beta = ParamAttr(initializer=ConstantInitializer(value=0),
trainable=affine)
return gama, beta
def __init__(self, channels=1, params=[0, 1, 1, 1, 1], n_iter=10):
super(FlowLayer, self).__init__()
self.n_iter = n_iter
sobel = np.kron(np.resize(np.eye(channels),
[channels, channels, 1, 1]),
np.array([[[[-0.5, 0, 0.5], [-0.5, 0, 0.5],
[-0.5, 0, 0.5]]]])) # Sobel矩阵
wx = np.array([[[[-1, 1]]]]).repeat(channels, axis=0)
wy = np.array([[[[-1], [1]]]]).repeat(channels, axis=0)
if params[0]:
self.conv_img_grad = Conv2D(
num_channels=channels,
num_filters=channels,
filter_size=3,
padding=1,
stride=1,
bias_attr=False,
param_attr=fluid.ParamAttr(initializer=NumpyArrayInitializer(
value=sobel)))
self.conv_img_grad2 = Conv2D(
num_channels=channels,
num_filters=channels,
filter_size=3,
padding=1,
stride=1,
bias_attr=False,
param_attr=fluid.ParamAttr(initializer=NumpyArrayInitializer(
value=sobel.transpose([0, 1, 3, 2]))))
else:
self.conv_img_grad = Conv2D(
num_channels=channels,
num_filters=channels,
filter_size=3,
padding=1,
stride=1,
bias_attr=False,
param_attr=fluid.ParamAttr(
initializer=NumpyArrayInitializer(value=sobel),
trainable=False))
self.conv_img_grad2 = Conv2D(
num_channels=channels,
num_filters=channels,
filter_size=3,
padding=1,
stride=1,
bias_attr=False,
param_attr=fluid.ParamAttr(initializer=NumpyArrayInitializer(
value=sobel.transpose([0, 1, 3, 2])),
trainable=False))
if params[1]:
self.conv_f_grad = Conv2D(
num_channels=channels,
num_filters=channels,
filter_size=3,
padding=0,
stride=1,
bias_attr=False,
groups=channels,
param_attr=fluid.ParamAttr(initializer=NumpyArrayInitializer(
value=wx)))
self.conv_f_grad2 = Conv2D(
num_channels=channels,
num_filters=channels,
filter_size=3,
padding=0,
stride=1,
bias_attr=False,
groups=channels,
param_attr=fluid.ParamAttr(initializer=NumpyArrayInitializer(
value=wy)))
self.conv_div = Conv2D(
num_channels=channels,
num_filters=channels,
filter_size=(1, 2),
padding=0,
stride=1,
bias_attr=False,
groups=channels,
param_attr=fluid.ParamAttr(initializer=NumpyArrayInitializer(
value=wx)))
self.conv_div2 = Conv2D(
num_channels=channels,
num_filters=channels,
filter_size=(2, 1),
padding=0,
stride=1,
bias_attr=False,
groups=channels,
param_attr=fluid.ParamAttr(initializer=NumpyArrayInitializer(
value=wy)))
else:
self.conv_f_grad = Conv2D(
num_channels=channels,
num_filters=channels,
filter_size=3,
padding=0,
stride=1,
bias_attr=False,
groups=channels,
param_attr=fluid.ParamAttr(
initializer=NumpyArrayInitializer(value=wx),
trainable=False))
self.conv_f_grad2 = Conv2D(
num_channels=channels,
num_filters=channels,
filter_size=3,
padding=0,
stride=1,
bias_attr=False,
groups=channels,
param_attr=fluid.ParamAttr(
initializer=NumpyArrayInitializer(value=wy),
trainable=False))
self.conv_div = Conv2D(
num_channels=channels,
num_filters=channels,
filter_size=(1, 2),
padding=0,
stride=1,
bias_attr=False,
groups=channels,
param_attr=fluid.ParamAttr(
initializer=NumpyArrayInitializer(value=wx),
trainable=False))
self.conv_div2 = Conv2D(
num_channels=channels,
num_filters=channels,
filter_size=(2, 1),
padding=0,
stride=1,
bias_attr=False,
groups=channels,
param_attr=fluid.ParamAttr(
initializer=NumpyArrayInitializer(value=wy),
trainable=False))
self.channels = channels
self.t = 0.3 # theta
self.l = 0.15 # lambda
self.a = 0.25 # tau
if params[2]:
self.t = fluid.layers.create_parameter(
shape=[1],
dtype='float32',
attr=fluid.ParamAttr(initializer=ConstantInitializer(
value=self.t)))
if params[3]:
self.l = fluid.layers.create_parameter(
shape=[1],
dtype='float32',
attr=fluid.ParamAttr(initializer=ConstantInitializer(
value=self.l)))
if params[4]:
self.a = fluid.layers.create_parameter(
shape=[1],
dtype='float32',
attr=fluid.ParamAttr(initializer=ConstantInitializer(
value=self.a)))