# Pooling Layers ## KerasPooling1D [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/pooling/KerasPooling1D.java) Imports a Keras 1D Pooling layer as a DL4J Subsampling layer. **KerasPooling1D** ``` public KerasPooling1D(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 **getSubsampling1DLayer** ``` public Subsampling1DLayer getSubsampling1DLayer() ``` 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 **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 ## KerasPoolingUtils [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/pooling/KerasPoolingUtils.java) Utility functionality for Keras pooling layers. **mapPoolingType** ``` public static PoolingType mapPoolingType(String className, KerasLayerConfiguration conf) throws UnsupportedKerasConfigurationException ``` Map Keras pooling layers to DL4J pooling types. * param className name of the Keras pooling class * return DL4J pooling type * throws UnsupportedKerasConfigurationException Unsupported Keras config ## KerasPooling3D [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/pooling/KerasPooling3D.java) Imports a Keras 3D Pooling layer as a DL4J Subsampling3D layer. **KerasPooling3D** ``` public KerasPooling3D(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 **getSubsampling3DLayer** ``` public Subsampling3DLayer getSubsampling3DLayer() ``` 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 **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 ## KerasGlobalPooling [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/pooling/KerasGlobalPooling.java) Imports a Keras Pooling layer as a DL4J Subsampling layer. **KerasGlobalPooling** ``` public KerasGlobalPooling(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 **getGlobalPoolingLayer** ``` public GlobalPoolingLayer getGlobalPoolingLayer() ``` 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 ## KerasPooling2D [\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/deeplearning4j/deeplearning4j-modelimport/src/main/java/org/deeplearning4j/nn/modelimport/keras/layers/pooling/KerasPooling2D.java) Imports a Keras 2D Pooling layer as a DL4J Subsampling layer. **KerasPooling2D** ``` public KerasPooling2D(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 **getSubsampling2DLayer** ``` public SubsamplingLayer getSubsampling2DLayer() ``` 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 **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