# Core Layers ## KerasPermute [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/core/KerasPermute.java) Imports Permute layer from Keras **KerasPermute** ``` public KerasPermute(Map layerConfig) throws InvalidKerasConfigurationException, UnsupportedKerasConfigurationException ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **isInputPreProcessor** ``` public boolean isInputPreProcessor() ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * param enforceTrainingConfig whether to enforce training-related configuration options * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getInputPreprocessor** ``` public InputPreProcessor getInputPreprocessor(InputType... inputType) throws InvalidKerasConfigurationException ``` Gets appropriate DL4J InputPreProcessor for given InputTypes. * param inputType Array of InputTypes * return DL4J InputPreProcessor * throws InvalidKerasConfigurationException Invalid Keras config * see InputPreProcessor **getOutputType** ``` public InputType getOutputType(InputType... inputType) throws InvalidKerasConfigurationException ``` Get layer output type. * param inputType Array of InputTypes * return output type as InputType * throws InvalidKerasConfigurationException Invalid Keras config ## KerasFlatten [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/core/KerasFlatten.java) Imports a Keras Flatten layer as a DL4J {Cnn,Rnn}ToFeedForwardInputPreProcessor. **KerasFlatten** ``` public KerasFlatten(Map layerConfig) throws InvalidKerasConfigurationException, UnsupportedKerasConfigurationException ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **isInputPreProcessor** ``` public boolean isInputPreProcessor() ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * param enforceTrainingConfig whether to enforce training-related configuration options * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getInputPreprocessor** ``` public InputPreProcessor getInputPreprocessor(InputType... inputType) throws InvalidKerasConfigurationException ``` Gets appropriate DL4J InputPreProcessor for given InputTypes. * param inputType Array of InputTypes * return DL4J InputPreProcessor * throws InvalidKerasConfigurationException Invalid Keras config * see org.deeplearning4j.nn.conf.InputPreProcessor **getOutputType** ``` public InputType getOutputType(InputType... inputType) throws InvalidKerasConfigurationException ``` Get layer output type. * param inputType Array of InputTypes * return output type as InputType * throws InvalidKerasConfigurationException Invalid Keras config ## KerasReshape [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/core/KerasReshape.java) Imports Reshape layer from Keras **KerasReshape** ``` public KerasReshape(Map layerConfig) throws InvalidKerasConfigurationException, UnsupportedKerasConfigurationException ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **isInputPreProcessor** ``` public boolean isInputPreProcessor() ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * param enforceTrainingConfig whether to enforce training-related configuration options * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getInputPreprocessor** ``` public InputPreProcessor getInputPreprocessor(InputType... inputType) throws InvalidKerasConfigurationException ``` Gets appropriate DL4J InputPreProcessor for given InputTypes. * param inputType Array of InputTypes * return DL4J InputPreProcessor * throws InvalidKerasConfigurationException Invalid Keras config * see org.deeplearning4j.nn.conf.InputPreProcessor **getOutputType** ``` public InputType getOutputType(InputType... inputType) throws InvalidKerasConfigurationException ``` Get layer output type. * param inputType Array of InputTypes * return output type as InputType * throws InvalidKerasConfigurationException Invalid Keras config ## KerasMerge [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/core/KerasMerge.java) Imports a Keras Merge layer as a DL4J Merge (graph) vertex. TODO: handle axes arguments that alter merge behavior (requires changes to DL4J?) **KerasMerge** ``` public KerasMerge(Integer kerasVersion) throws UnsupportedKerasConfigurationException ``` Pass-through constructor from KerasLayer * param kerasVersion major keras version * throws UnsupportedKerasConfigurationException Unsupported Keras config **getOutputType** ``` public InputType getOutputType(InputType... inputType) ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration. * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config ## KerasDropout [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/core/KerasDropout.java) Imports a Dropout layer from Keras. **KerasDropout** ``` public KerasDropout(Map layerConfig) throws InvalidKerasConfigurationException, UnsupportedKerasConfigurationException ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getOutputType** ``` public InputType getOutputType(InputType... inputType) throws InvalidKerasConfigurationException ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * param enforceTrainingConfig whether to enforce training-related configuration options * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getDropoutLayer** ``` public DropoutLayer getDropoutLayer() ``` Get DL4J DropoutLayer. * return DropoutLayer ## KerasMasking [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/core/KerasMasking.java) Imports Keras masking layers. **KerasMasking** ``` public KerasMasking(Map layerConfig) throws InvalidKerasConfigurationException, UnsupportedKerasConfigurationException ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getOutputType** ``` public InputType getOutputType(InputType... inputType) throws InvalidKerasConfigurationException ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * param enforceTrainingConfig whether to enforce training-related configuration options * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getMaskingLayer** ``` public MaskZeroLayer getMaskingLayer() ``` Get DL4J MaskZeroLayer. * return MaskZeroLayer ## KerasSpatialDropout [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/core/KerasSpatialDropout.java) Keras wrapper for DL4J dropout layer with SpatialDropout, works 1D-3D. **KerasSpatialDropout** ``` public KerasSpatialDropout(Integer kerasVersion) throws UnsupportedKerasConfigurationException ``` Pass-through constructor from KerasLayer * param kerasVersion major keras version * throws UnsupportedKerasConfigurationException Unsupported Keras config **getOutputType** ``` public InputType getOutputType(InputType... inputType) throws InvalidKerasConfigurationException ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration. * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getSpatialDropoutLayer** ``` public DropoutLayer getSpatialDropoutLayer() ``` Get DL4J DropoutLayer with spatial dropout. * return DropoutLayer ## KerasLambda [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/core/KerasLambda.java) Wraps a DL4J SameDiffLambda into a KerasLayer **KerasLambda** ``` public KerasLambda(Map layerConfig, SameDiffLayer sameDiffLayer) throws InvalidKerasConfigurationException, UnsupportedKerasConfigurationException ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getOutputType** ``` public InputType getOutputType(InputType... inputType) throws InvalidKerasConfigurationException ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * param enforceTrainingConfig whether to enforce training-related configuration options * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getSameDiffLayer** ``` public SameDiffLayer getSameDiffLayer() ``` Get DL4J SameDiffLayer. * return SameDiffLayer ## KerasActivation [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/core/KerasActivation.java) Imports an Activation layer from Keras. **KerasActivation** ``` public KerasActivation(Map layerConfig) throws InvalidKerasConfigurationException, UnsupportedKerasConfigurationException ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getOutputType** ``` public InputType getOutputType(InputType... inputType) throws InvalidKerasConfigurationException ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * param enforceTrainingConfig whether to enforce training-related configuration options * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getActivationLayer** ``` public ActivationLayer getActivationLayer() ``` Get DL4J ActivationLayer. * return ActivationLayer ## KerasDense [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/core/KerasDense.java) Imports a Dense layer from Keras. **KerasDense** ``` public KerasDense(Integer kerasVersion) throws UnsupportedKerasConfigurationException ``` Pass-through constructor from KerasLayer * param kerasVersion major keras version * throws UnsupportedKerasConfigurationException Unsupported Keras config **getDenseLayer** ``` public DenseLayer getDenseLayer() ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getOutputType** ``` public InputType getOutputType(InputType... inputType) throws InvalidKerasConfigurationException ``` Get layer output type. * param inputType Array of InputTypes * return output type as InputType * throws InvalidKerasConfigurationException Invalid Keras config **getNumParams** ``` public int getNumParams() ``` Returns number of trainable parameters in layer. * return number of trainable parameters (2) **setWeights** ``` public void setWeights(Map weights) throws InvalidKerasConfigurationException ``` Set weights for layer. * param weights Dense layer weights ## KerasRepeatVector [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/core/KerasRepeatVector.java) Imports a Keras RepeatVector layer **KerasRepeatVector** ``` public KerasRepeatVector(Map layerConfig) throws InvalidKerasConfigurationException, UnsupportedKerasConfigurationException ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getOutputType** ``` public InputType getOutputType(InputType... inputType) throws InvalidKerasConfigurationException ``` Constructor from parsed Keras layer configuration dictionary. * param layerConfig dictionary containing Keras layer configuration * param enforceTrainingConfig whether to enforce training-related configuration options * throws InvalidKerasConfigurationException Invalid Keras config * throws UnsupportedKerasConfigurationException Unsupported Keras config **getRepeatVectorLayer** ``` public RepeatVector getRepeatVectorLayer() ``` Get DL4J RepeatVector. * return RepeatVector