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# Recurrent Neural Networks

Create recurrent neural networks.

## Topics

### Recurrent Neural Networks

[`MPSRNNImageInferenceLayer`](/documentation/MetalPerformanceShaders/MPSRNNImageInferenceLayer)

A recurrent neural network layer for inference on Metal Performance Shaders images.

[`MPSRNNMatrixInferenceLayer`](/documentation/MetalPerformanceShaders/MPSRNNMatrixInferenceLayer)

A recurrent neural network layer for inference on Metal Performance Shaders matrices.

[`MPSRNNSingleGateDescriptor`](/documentation/MetalPerformanceShaders/MPSRNNSingleGateDescriptor)

A description of a simple recurrent block or layer.

[`MPSGRUDescriptor`](/documentation/MetalPerformanceShaders/MPSGRUDescriptor)

A description of a gated recurrent unit block or layer.

[`MPSLSTMDescriptor`](/documentation/MetalPerformanceShaders/MPSLSTMDescriptor)

A description of a long short-term memory block or layer.

[`MPSRNNSequenceDirection`](/documentation/MetalPerformanceShaders/MPSRNNSequenceDirection)

Directions that a sequence of inputs can be processed by a recurrent neural network layer.

[`MPSRNNMatrixTrainingLayer`](/documentation/MetalPerformanceShaders/MPSRNNMatrixTrainingLayer)

A layer for training recurrent neural networks on Metal Performance Shaders matrices.

[`MPSRNNMatrixTrainingState`](/documentation/MetalPerformanceShaders/MPSRNNMatrixTrainingState)

A class that holds data from a forward pass to be used in a backward pass.


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