> For the complete documentation index, see [llms.txt](https://deeplearning4j.konduit.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://deeplearning4j.konduit.ai/en-1.0.0-beta6/arbiter/layer-spaces.md).

# Layer Spaces

### ActivationLayerSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/ActivationLayerSpace.java)

### AutoEncoderLayerSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/AutoEncoderLayerSpace.java)

Layer space for autoencoder layers

### BatchNormalizationSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/BatchNormalizationSpace.java)

LayerSpace for batch normalization layers

### Bidirectional

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/Bidirectional.java)

Bidirectional layer wrapper. Can be used wrap an existing layer space, in the same way that

### ConvolutionLayerSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/ConvolutionLayerSpace.java)

Layer space for convolutional layers

### DenseLayerSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/DenseLayerSpace.java)

layer hyperparameter configuration space for dense layers (i.e., multi-layer perceptron layers)

### EmbeddingLayerSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/EmbeddingLayerSpace.java)

### GlobalPoolingLayerSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/GlobalPoolingLayerSpace.java)

### GravesBidirectionalLSTMLayerSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/GravesBidirectionalLSTMLayerSpace.java)

Layer space for Bidirectional LSTM layers

### GravesLSTMLayerSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/GravesLSTMLayerSpace.java)

Layer space for LSTM layers

### LSTMLayerSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/LSTMLayerSpace.java)

Layer space for LSTM layers

### OCNNLayerSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/OCNNLayerSpace.java)

Use hiddenLayerSize instead

#### **numHidden**

```
public Builder numHidden(int numHidden) 
```

Use hiddenLayerSize instead

* param numHidden
* return

### OutputLayerSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/OutputLayerSpace.java)

Layer hyperparameter configuration space for output layers

### RnnOutputLayerSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/RnnOutputLayerSpace.java)

Layer hyperparametor configuration space for RnnOutputLayer

### SubsamplingLayerSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/SubsamplingLayerSpace.java)

Layer hyperparameter configuration space for subsampling layers

### VariationalAutoencoderLayerSpace

[\[source\]](https://github.com/eclipse/deeplearning4j/tree/master/arbiter/arbiter-deeplearning4j/src/main/java/org/deeplearning4j/arbiter/layers/VariationalAutoencoderLayerSpace.java)<br>


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