def process(self, ellLayers): """Appends the ELL representation of the current layer to ellLayers.""" # Note that a single CNTK Linear 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_float_tensor_from_cntk_dense_weight_parameter( weightsParameter) biasVector = converters.get_float_vector_from_cntk_trainable_parameter( biasParameter) # Create the ell.LayerParameters for the various ELL layers firstLayerParameters = ell.LayerParameters( self.layer.ell_inputShape, self.layer.ell_inputPaddingParameters, self.layer.ell_outputShapeMinusPadding, ell.NoPadding()) middleLayerParameters = ell.LayerParameters(self.layer.ell_outputShapeMinusPadding, ell.NoPadding( ), self.layer.ell_outputShapeMinusPadding, ell.NoPadding()) lastLayerParameters = ell.LayerParameters(self.layer.ell_outputShapeMinusPadding, ell.NoPadding( ), self.layer.ell_outputShape, self.layer.ell_outputPaddingParameters) 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.FloatFullyConnectedLayer( layerParameters, weightsTensor)) # Create the ELL bias layer isSoftmaxActivation = utilities.is_softmax_activation(internalNodes) hasActivation = isSoftmaxActivation or activationType != None if (hasActivation): layerParameters = middleLayerParameters else: layerParameters = lastLayerParameters ellLayers.append(ell.FloatBiasLayer(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.FloatSoftmaxLayer(layerParameters)) else: ellLayers.append(ell.FloatActivationLayer( layerParameters, activationType))
def process(self, ellLayers): """Appends the ELL representation of the current layer to ellLayers.""" # Create the ell.LayerParameters for the ELL layer layerParameters = ell.LayerParameters( self.layer.ell_inputShape, self.layer.ell_inputPaddingParameters, self.layer.ell_outputShape, self.layer.ell_outputPaddingParameters) # Create the ELL activation layer ellLayers.append(ell.FloatActivationLayer( layerParameters, ell.ActivationType.leaky))
def get_activation_layer(layer, apply_padding): """Return an ELL activation layer from a darknet activation""" if (apply_padding): layerParameters = create_layer_parameters( layer['outputShapeMinusPadding'], 0, ell.PaddingScheme.zeros, layer['outputShape'], layer['outputPadding'], layer['outputPaddingScheme']) else: layerParameters = create_layer_parameters( layer['outputShapeMinusPadding'], 0, ell.PaddingScheme.zeros, layer['outputShapeMinusPadding'], 0, ell.PaddingScheme.zeros) activationType = get_activation_type(layer) return ell.FloatActivationLayer(layerParameters, activationType)
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_float_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.LayerParameters for the various ELL layers onlyLayerParameters = ell.LayerParameters( self.layer.ell_inputShape, self.layer.ell_inputPaddingParameters, self.layer.ell_outputShape, self.layer.ell_outputPaddingParameters) firstLayerParameters = ell.LayerParameters( self.layer.ell_inputShape, self.layer.ell_inputPaddingParameters, self.layer.ell_outputShapeMinusPadding, ell.NoPadding()) middleLayerParameters = ell.LayerParameters(self.layer.ell_outputShapeMinusPadding, ell.NoPadding( ), self.layer.ell_outputShapeMinusPadding, ell.NoPadding()) lastLayerParameters = ell.LayerParameters(self.layer.ell_outputShapeMinusPadding, ell.NoPadding( ), self.layer.ell_outputShape, self.layer.ell_outputPaddingParameters) # 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.ConvolutionalParameters( receptiveField, stride, self.convolution_method, filterBatchSize) # Create the ELL convolutional layer ellLayers.append(ell.FloatConvolutionalLayer( layerParameters, convolutionalParameters, weightsTensor)) # Create the ELL bias layer if hasBias: if hasActivation: layerParameters = middleLayerParameters else: layerParameters = lastLayerParameters biasVector = converters.get_float_vector_from_cntk_trainable_parameter( self.bias_parameter) ellLayers.append(ell.FloatBiasLayer(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.FloatSoftmaxLayer(layerParameters)) else: ellLayers.append(ell.FloatActivationLayer( layerParameters, activationType))