def Minus(self, cntk_op, inputs):
"""
Returns input[0] - input[1] element-wise.
Arguments:
cntk_op: CNTK operation to be imported.
inputs: List of inputs to this node.
Returns:
A ngraph Op.
"""
cast_0, cast_1 = self._cast_for_binary_op(inputs)
return ng.subtract(cast_0, cast_1).named(cntk_op.uid)
def Floor(self, cntk_op, inputs):
"""
Returns element-wise value rounded to the largest integer less than or equal to inputs[0].
Arguments:
cntk_op: CNTK operation to be imported.
inputs: List of inputs to this node.
Returns:
A ngraph Op.
"""
assert len(inputs) == 1
return ng.subtract(inputs[0], ng.mod(inputs[0], 1)).named(cntk_op.uid)
def construct_batchnorm_fprop_pattern(self):
"""
Generate graph op that represents a pattern for batchnorm fprop operation.
self.gamma * ((in_obj - xmean) * ng.reciprocal(ng.sqrt(xvar + self.eps))) + self.beta
Returns:
Single pattern that matches batchnorm fprop op
"""
self.batchnorm_fprop_input_tensor_label = "in_obj"
self.batchnorm_fprop_gamma_label = "gamma"
self.batchnorm_fprop_beta_label = "beta"
self.batchnorm_fprop_variance_label = "variance"
self.batchnorm_fprop_epsilon_label = "epsilon"
self.batchnorm_fprop_mean_label = "mean"
# bind the label to the op's which needed to be updated in the dict
in_obj = PatternLabelOp(self.batchnorm_fprop_input_tensor_label,
(lambda op: isinstance(op, ContiguousOp)))
flatten_tensor = PatternSkipOp(in_obj,
(lambda op: isinstance(op, Flatten)))
gamma = PatternLabelOp(self.batchnorm_fprop_gamma_label,
(lambda op: isinstance(op, BroadcastOp)))
beta = PatternLabelOp(self.batchnorm_fprop_beta_label,
(lambda op: isinstance(op, BroadcastOp)))
variance = PatternLabelOp(self.batchnorm_fprop_variance_label,
(lambda op: isinstance(op, Divide)))
epsilon = PatternLabelOp(self.batchnorm_fprop_epsilon_label,
(lambda op: isinstance(op, BroadcastOp)))
mean = PatternLabelOp(self.batchnorm_fprop_mean_label,
(lambda op: isinstance(op, Divide)))
# construct the fprop batchnorm pattern matching the computation graph
# ng.sqrt(xvar + self.eps)
SqrtofVarianceAndEps = ng.sqrt(ng.add(variance, epsilon))
# ng.reciprocal(ng.sqrt(xvar + self.eps))
reciprocal_op = ng.reciprocal(SqrtofVarianceAndEps)
reciprocal_op_w_braodcast = ng.PatternSkipOp(reciprocal_op,
lambda op: isinstance(op, BroadcastOp))
mean_bcast = ng.PatternSkipOp(mean, lambda op: isinstance(op, BroadcastOp))
# (in_obj - xmean) * ng.reciprocal(ng.sqrt(xvar + self.eps))
mul_op_1 = ng.multiply(ng.subtract(flatten_tensor, mean_bcast), reciprocal_op_w_braodcast)
# "self.gamma * ((in_obj - xmean) * ng.reciprocal(ng.sqrt(xvar + self.eps)))
MultiplyGamma = ng.multiply(mul_op_1, gamma)
# self.gamma * ((in_obj - xmean) * ng.reciprocal(ng.sqrt(xvar + self.eps))) + self.beta
AddBeta = ng.Unflatten(ng.Add(MultiplyGamma, beta))
return AddBeta
def binary_op(op_str, a, b):
if op_str == '+':
return a + b
elif op_str == 'Add':
return ng.add(a, b)
elif op_str == '-':
return a - b
elif op_str == 'Sub':
return ng.subtract(a, b)
elif op_str == '*':
return a * b
elif op_str == 'Mul':
return ng.multiply(a, b)
elif op_str == '/':
return a / b
elif op_str == 'Div':
return ng.divide(a, b)
elif op_str == 'Dot':
return Dot(a, b)
elif op_str == 'Equal':
return ng.equal(a, b)
elif op_str == 'Greater':
return ng.greater(a, b)
elif op_str == 'GreaterEq':
return ng.greater_equal(a, b)
elif op_str == 'Less':
return ng.less(a, b)
elif op_str == 'LessEq':
return ng.less_equal(a, b)
elif op_str == 'Maximum':
return ng.maximum(a, b)
elif op_str == 'Minimum':
return ng.minimum(a, b)
elif op_str == 'NotEqual':
return ng.not_equal(a, b)
elif op_str == 'Power':
return ng.power(a, b)
def binary_op(op_str, a, b):
if op_str == "+":
return a + b
elif op_str == "Add":
return ng.add(a, b)
elif op_str == "-":
return a - b
elif op_str == "Sub":
return ng.subtract(a, b)
elif op_str == "*":
return a * b
elif op_str == "Mul":
return ng.multiply(a, b)
elif op_str == "/":
return a / b
elif op_str == "Div":
return ng.divide(a, b)
elif op_str == "Equal":
return ng.equal(a, b)
elif op_str == "Greater":
return ng.greater(a, b)
elif op_str == "GreaterEq":
return ng.greater_equal(a, b)
elif op_str == "Less":
return ng.less(a, b)
elif op_str == "LessEq":
return ng.less_equal(a, b)
elif op_str == "Maximum":
return ng.maximum(a, b)
elif op_str == "Minimum":
return ng.minimum(a, b)
elif op_str == "NotEqual":
return ng.not_equal(a, b)
elif op_str == "Power":
return ng.power(a, b)
def Sub(onnx_node, ng_inputs): # type: (NodeWrapper, List[NgraphNode]) -> NgraphNode
"""Perform element-wise binary subtraction."""
left, right = broadcast_for_binary_operation(onnx_node, ng_inputs)
return ng.subtract(left, right)
def Sub(onnx_node, ng_inputs): # type: (NodeWrapper, List[TensorOp]) -> Op
left, right = cast_axes_for_binary_broadcast(onnx_node, ng_inputs)
return ng.subtract(left, right)
def Sub(onnx_node, ng_inputs): # type: (NodeWrapper, List[TensorOp]) -> Op
verify_axes_binary_broadcast_compatible(onnx_node, ng_inputs)
return ng.subtract(ng_inputs[0], ng_inputs[1])
