def process(self, ellLayers): """Appends the ELL equivalent of the current layer to ellLayers.""" # Note that a single CNTK Dense function block is equivalent to the following 3 ELL layers: # - FullyConnectedLayer # - BiasLayer # - ActivationLayer. This layer is sometimes missing, depending on activation type. # # Therefore, make sure the output padding characteristics of the last layer reflect the next layer's # padding requirements. weightsParameter = utilities.find_parameter_by_name( self.layer.parameters, 'W', 0) biasParameter = utilities.find_parameter_by_name( self.layer.parameters, 'b', 1) weightsTensor = converters.get_tensor_from_cntk_dense_weight_parameter( weightsParameter) biasVector = converters.get_vector_from_cntk_trainable_parameter( biasParameter) # Create the ell.neural.LayerParameters for the various ELL layers firstLayerParameters = ell.neural.LayerParameters( self.layer.ell_inputShape, self.layer.ell_inputPaddingParameters, self.layer.ell_outputShapeMinusPadding, ell.neural.NoPadding(), ell.nodes.PortType.smallReal) middleLayerParameters = ell.neural.LayerParameters( self.layer.ell_outputShapeMinusPadding, ell.neural.NoPadding(), self.layer.ell_outputShapeMinusPadding, ell.neural.NoPadding(), ell.nodes.PortType.smallReal) lastLayerParameters = ell.neural.LayerParameters( self.layer.ell_outputShapeMinusPadding, ell.neural.NoPadding(), self.layer.ell_outputShape, self.layer.ell_outputPaddingParameters, ell.nodes.PortType.smallReal) layerParameters = firstLayerParameters internalNodes = utilities.get_model_layers(self.layer.block_root) activationType = utilities.get_ell_activation_type(internalNodes) # Create the ELL fully connected layer ellLayers.append(ell.neural.FullyConnectedLayer( layerParameters, weightsTensor)) # Create the ELL bias layer if (utilities.is_softmax_activation(internalNodes) or activationType is not None): layerParameters = middleLayerParameters else: layerParameters = lastLayerParameters ellLayers.append(ell.neural.BiasLayer(layerParameters, biasVector)) # Create the ELL activation layer if (utilities.is_softmax_activation(internalNodes) or activationType is not None): layerParameters = lastLayerParameters # Special case: if this is softmax activation, create an ELL Softmax layer. # Else, insert an ELL ActivationLayer if (utilities.is_softmax_activation(internalNodes)): ellLayers.append(ell.neural.SoftmaxLayer(layerParameters)) else: if (activationType is not None): ellLayers.append(ell.neural.ActivationLayer( layerParameters, activationType))
def __init__(self, layer): if not layer.is_block: raise ValueError( "Error: Convolution layer node is not in block node") self.op_name = 'Convolution' # initialize weights and input characteristics self.input_parameter = layer.arguments[0] self.weights_parameter = utilities.find_parameter_by_name( layer.parameters, 'W', 0) self.bias_parameter = utilities.find_parameter_by_name( layer.parameters, 'b', 1) # Get the hyper-parameters for the convolution. # They are on the convolution node inside this block. convolution_nodes = depth_first_search( layer.block_root, lambda x: utilities.op_name_equals(x, 'Convolution')) self.attributes = convolution_nodes[0].attributes self.convolution_method = 0 self.input_shape = self.input_parameter.shape super().__init__(layer) nodes = utilities.get_model_layers(layer.block_root) if utilities.is_softmax_activation(nodes): self.additional_layer_text = 'softmax' else: activation_type = utilities.get_cntk_activation_name(nodes) if activation_type: self.additional_layer_text = activation_type
def process(self, ellLayers): """Helper to convert a convolutional layer to the ELL equivalent.""" # Note that a single CNTK Convolutional function block is equivalent to the following 3 ELL layers: # - ConvolutionalLayer # - BiasLayer. This layer is sometimes missing, depending on whether bias is included. # - ActivationLayer. This layer is sometimes missing, depending on activation type. # # Therefore, make sure the output padding characteristics of the last layer reflect the next layer's # padding requirements. weightsTensor = converters.get_tensor_from_cntk_convolutional_weight_parameter( self.weights_parameter) internalNodes = utilities.get_model_layers(self.layer.block_root) activationType = utilities.get_ell_activation_type(internalNodes) isSoftmaxActivation = utilities.is_softmax_activation(internalNodes) hasActivation = isSoftmaxActivation or activationType != None hasBias = self.bias_parameter != None # Create the ell.neural.LayerParameters for the various ELL layers onlyLayerParameters = ell.neural.LayerParameters( self.layer.ell_inputShape, self.layer.ell_inputPaddingParameters, self.layer.ell_outputShape, self.layer.ell_outputPaddingParameters, ell.nodes.PortType.smallReal) firstLayerParameters = ell.neural.LayerParameters( self.layer.ell_inputShape, self.layer.ell_inputPaddingParameters, self.layer.ell_outputShapeMinusPadding, ell.neural.NoPadding(), ell.nodes.PortType.smallReal) middleLayerParameters = ell.neural.LayerParameters( self.layer.ell_outputShapeMinusPadding, ell.neural.NoPadding(), self.layer.ell_outputShapeMinusPadding, ell.neural.NoPadding(), ell.nodes.PortType.smallReal) lastLayerParameters = ell.neural.LayerParameters( self.layer.ell_outputShapeMinusPadding, ell.neural.NoPadding(), self.layer.ell_outputShape, self.layer.ell_outputPaddingParameters, ell.nodes.PortType.smallReal) # Choose the layer parameters for the convolutional layer. If there is # bias or activation, then the convolution is the first of two or more, # otherwise it is the only layer if hasActivation or hasBias: layerParameters = firstLayerParameters else: layerParameters = onlyLayerParameters # Fill in the convolutional parameters weightsShape = self.weights_parameter.shape receptiveField = weightsShape[2] stride = self.attributes['strides'][2] filterBatchSize = layerParameters.outputShape.channels convolutionalParameters = ell.neural.ConvolutionalParameters( receptiveField, stride, self.convolution_method, filterBatchSize) # Create the ELL convolutional layer ellLayers.append( ell.neural.ConvolutionalLayer(layerParameters, convolutionalParameters, weightsTensor)) # Create the ELL bias layer if hasBias: if hasActivation: layerParameters = middleLayerParameters else: layerParameters = lastLayerParameters biasVector = converters.get_vector_from_cntk_trainable_parameter( self.bias_parameter) ellLayers.append(ell.neural.BiasLayer(layerParameters, biasVector)) # Create the ELL activation layer if hasActivation: layerParameters = lastLayerParameters # Special case: if this is softmax activation, create an ELL Softmax layer. # Else, insert an ELL ActivationLayer if (isSoftmaxActivation): ellLayers.append(ell.neural.SoftmaxLayer(layerParameters)) else: ellLayers.append( ell.neural.ActivationLayer(layerParameters, activationType))