def test_conv2d_transpose(self):
tf.compat.v1.reset_default_graph()
K = np.reshape(np.array([[[1, 1, 1], [1, 2, 1], [1, 1, 1]]],
dtype=np.float32),
(1, 1, 3, 3))
B = np.array([1], dtype=np.float32)
X = xlayer.XLayer(
name='tconv',
type=['TransposeConv2D'],
shapes=[1, 1, 6, 6],
sizes=[25],
bottoms=['input'],
tops=[],
data=xlayer.ConvData(K, B),
attrs={
'data_layout': 'NCHW',
'kernel_layout': 'OIHW',
'padding': [[0, 0], [0, 0], [0, 0], [0, 0]],
'strides': [2, 2],
'dilation': [1, 1],
'groups': 1
},
targets=[]
)
input_shapes = {
'input': TensorShape([1, 1, 3, 3])
}
data = np.reshape(np.array([[1, 2, 3],
[4, 5, 6],
[7, 8, 9]], dtype=np.float32),
(1, 1, 3, 3))
inputs = {
'input': data
}
params = {
'tconv_kernel': K,
'tconv_biases': B
}
layers = base.get_conv2d_transpose_layer(
Conv2DTransposeLayer, ConstantLayer)(X, input_shapes, params)
assert(len(layers) == 3)
inputs.update(params)
for layer in layers:
inpts = [inputs[name] for name in layer.inputs]
outpt = layer.forward_exec(inpts)
expected_outpt = np.array([1], dtype=np.float32) +\
np.array([[[[1, 1, 3, 2, 5, 3],
[1, 2, 3, 4, 5, 6],
[5, 5, 12, 7, 16, 9],
[4, 8, 9, 10, 11, 12],
[11, 11, 24, 13, 28, 15],
[7, 14, 15, 16, 17, 18]]]],
dtype=np.float32)
np.testing.assert_array_almost_equal(outpt, expected_outpt)
def merge_batchnorm_into_conv(xgraph, bottom_Xs, X, top_Xs, **kwargs):
# type: (XGraph, List[XLayer], XLayer, List[XLayer]) -> XLayer
"""
Try to merge batch normalization layer into preceding Convolution
Conv = Conv + BN
= Gamma*((Wx+B) - Mu)/Sigma + Beta
= Gamma*(W/Sigma)x + Gamma*(-Mu+B)/Sigma + Beta
"""
changes = False
if 'BatchNorm' in X.type:
if not all(['Convolution' in b_X.type for b_X in bottom_Xs]):
# Batch norm can only be merged with preceding Convolution
return changes
changes = True
if not isinstance(X.data, xlayer.BatchData):
raise ValueError("Invalid batch normalization data type: {}, "
" should be of type: xlayer.BatchData".format(
type(X.data)))
for bottom_X in bottom_Xs:
if not isinstance(bottom_X.data, xlayer.ConvData):
raise ValueError(
"Invalid convolution parameters data type:"
" {}, should be of type: xlayer.ConvData".format(
type(bottom_X.data)))
# Weights should have layout: OIHW at this point
conv_weights = bottom_X.data.weights
conv_biases = bottom_X.data.biases
bn_mu, bn_sigma_square = X.data.mu, X.data.sigma_square
bn_gamma, bn_beta = X.data.gamma, X.data.beta
shape = (conv_weights.shape[0], 1, 1, 1)
epsilon = X.attrs['epsilon']
assert (conv_weights.shape[0] == conv_biases.shape[0] ==
bn_mu.shape[0] == bn_sigma_square.shape[0])
conv_weights = bn_gamma.reshape(shape) *\
(conv_weights /
np.sqrt(bn_sigma_square.reshape(shape) + epsilon))
conv_biases = bn_gamma * \
((conv_biases - bn_mu) / np.sqrt(bn_sigma_square + epsilon)) +\
bn_beta
bottom_X.data = xlayer.ConvData(conv_weights, conv_biases)
bottom_X.layer = bottom_X.layer[:] + [X.name]
# bottom_X = bottom_X._replace(
# data=xlayer.ConvData(conv_weights, conv_biases),
# layer=bottom_X.layer[:] + [X.name]
# )
# xgraph.update(bottom_X)
# Remove the batch norm node
xgraph.remove(X.name)
return changes
def test_conv2d(self):
tf.compat.v1.reset_default_graph()
K = np.reshape(
np.array([[[1, 2], [3, 4]], [[5, 6], [7, 8]]], dtype=np.float32),
(2, 1, 2, 2))
B = np.array([0, 0], dtype=np.float32)
X = xlayer.XLayer(name='test_conv2d',
type=['Convolution'],
shapes=[1, 2, 3, 3],
sizes=[18],
bottoms=['input'],
tops=[],
data=xlayer.ConvData(K, B),
attrs={
'data_layout': 'NCHW',
'kernel_layout': 'OIHW',
'padding': [[0, 0], [0, 0], [0, 0], [0, 0]],
'strides': [1, 1],
'dilation': [1, 1],
'groups': 1
},
targets=[])
input_shapes = {'input': TensorShape([1, 1, 4, 4])}
inputs = {'input': np.ones((1, 1, 4, 4), dtype=np.float32)}
params = {
'test_conv2d_kernel':
np.reshape(
np.array([[[1, 2], [3, 4]], [[5, 6], [7, 8]]],
dtype=np.float32), (2, 1, 2, 2)),
'test_conv2d_biases':
np.array([0, 0], dtype=np.float32)
}
layers = base.get_conv2d_layer(ConvLayer,
ConstantLayer)(X, input_shapes, params)
assert (len(layers) == 3)
inputs.update(params)
for layer in layers:
# print("-----------------------")
# print("Run layer: {}".format(layer.name))
inpts = [inputs[name] for name in layer.inputs]
outpt = layer.forward_exec(inpts)
# print("Output:", outpt.shape, outpt)
inputs[layer.name] = outpt
expected_outpt = np.array([[[[10., 10., 10.], [10., 10., 10.],
[10., 10., 10.]],
[[26., 26., 26.], [26., 26., 26.],
[26., 26., 26.]]]])
np.testing.assert_array_equal(outpt, expected_outpt)
def merge_bias(xgraph, bottom_Xs, X, top_Xs, **kwargs):
# type: (XGraph, List[XLayer], XLayer, List[XLayer]) -> XLayer
"""
Try to merge bias layer into preceding Convolution or Dense layer
"""
changes = False
# Eltwise operation with bias add
if 'BiasAdd' in X.type or ('Eltwise' in X.type and X.data != []):
if len(bottom_Xs) != 1:
raise ValueError("Impossible to merge bias layer. Bias layer"
" must always be preceded by exactly one layer,"
" but found: {}.".format(len(bottom_Xs)))
bottom_X = bottom_Xs[0]
if bottom_X.type[0] in ['Convolution', 'Dense', 'Conv2DTranspose']:
bias = bottom_X.data.biases + X.data[0]
# if bottom_X.bias and X.data is not None else X.data
changes = True
# TODO: remove Relay specific code in core functionality
if 'relay_id' in bottom_X.attrs and 'relay_id' in X.attrs:
bottom_X.attrs['relay_id'] += X.attrs['relay_id']
bottom_X.data = xlayer.ConvData(bottom_X.data.weights, bias)
bottom_X.layer = bottom_X.layer[:] + [X.name]
# bottom_X = bottom_X._replace(
# data=xlayer.ConvData(bottom_X.data.weights, bias),
# layer=bottom_X.layer[:] + [X.name]
# )
# xgraph.update(bottom_X)
# Remove the bias addition node
xgraph.remove(X.name)
return changes
def merge_scale_into_conv_bn(xgraph, bottom_Xs, X, top_Xs, **kwargs):
# type: (XGraph, List[XLayer], XLayer, List[XLayer]) -> XLayer
"""
Try to merge scaling layer into preceding Convolution(s) or BatchNorm(s)
Conv = Conv + Scale : (Wx+B)*gamma + beta = (W*gamma)x + B*gamma + beta
Scale = BN + Scale :
((x- mu)/sigma)*gamma + beta = x*(gamma/sigma) +
(beta - mu * gamma / sigma)
"""
changes = False
if 'Scale' in X.type:
# TODO: Scale + Scale
if not all(
[b_X.type[0] in ['Convolution', 'BatchNorm']
for b_X in bottom_Xs]):
# Scaling can only be merged into Convolution and BatchNorm
return changes
changes = True
if not isinstance(X.data, xlayer.ScaleData):
raise ValueError("Invalid batch normalization data type: {}, "
" should be of type: xlayer.ScaleData".format(
type(X.data)))
for bottom_X in bottom_Xs:
if bottom_X.type[0] == 'Convolution':
if not isinstance(bottom_X.data, xlayer.ConvData):
raise ValueError("Invalid convolution parameters data"
" type: {}, should be of type:"
" xlayer.ConvData".format(
type(bottom_X.data)))
# Weights should have layout: OIHW at this point
conv_weights = bottom_X.data.weights
conv_biases = bottom_X.data.biases
gamma, beta = X.data.gamma, X.data.beta
shape = (conv_weights.shape[0], 1, 1, 1)
assert (conv_weights.shape[0] == conv_biases.shape[0] ==
gamma.shape[0] == beta.shape[0])
conv_weights = conv_weights * gamma.reshape(shape)
conv_biases = conv_biases * gamma + beta
# bottom_X = bottom_X._replace(
# data=xlayer.ConvData(conv_weights, conv_biases),
# layer=bottom_X.layer[:] + [X.name]
# )
bottom_X.data = xlayer.ConvData(conv_weights, conv_biases)
bottom_X.layer = bottom_X.layer[:] + [X.name]
elif bottom_X.type[0] == 'BatchNorm':
if not isinstance(bottom_X.data, xlayer.BatchData):
raise ValueError(
"Invalid BatchNorm parameters data type:"
" {}, should be of type: xlayer.BatchData".format(
type(bottom_X.data)))
if not isinstance(X.data, xlayer.ScaleData):
raise ValueError(
"Invalid scaling layer data type: {},"
" should be of type: xlayer.ScaleData".format(
type(X.data)))
# Weights should have layout: OIHW at this point
gamma, beta = X.data.gamma, X.data.beta
bn_mu, bn_sigma_square = \
bottom_X.data.mu, bottom_X.data.sigma_square
bn_gamma, bn_beta = \
bottom_X.data.gamma, bottom_X.data.beta
epsilon = bottom_X.attrs['epsilon']
assert (bn_mu.shape[0] == bn_sigma_square.shape[0] ==
bn_gamma.shape[0] == bn_beta.shape[0] == gamma.shape[0]
== beta.shape[0])
new_gamma = gamma * bn_gamma
new_beta = gamma * bn_beta + beta
bottom_X.data = xlayer.BatchData(bn_mu, bn_sigma_square,
new_gamma, new_beta)
bottom_X.layer = bottom_X.layer[:] + [X.name]
# Remove the Scale node
xgraph.remove(X.name)
return changes
