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# BNNSOptimizer

```
protocol BNNSOptimizer
```

## Topics

### Instance Properties

[`var accumulatorCountMultiplier: Int`](/documentation/Accelerate/BNNSOptimizer/accumulatorCountMultiplier)

[`var bnnsOptimizerFunction: BNNSOptimizerFunction`](/documentation/Accelerate/BNNSOptimizer/bnnsOptimizerFunction)

### Instance Methods

[`func step(parameters: [BNNSNDArrayDescriptor], gradients: [BNNSNDArrayDescriptor], accumulators: [BNNSNDArrayDescriptor], filterParameters: BNNSFilterParameters?) throws`](/documentation/Accelerate/BNNSOptimizer/step(parameters:gradients:accumulators:filterParameters:))

## Relationships

### Conforming Types

[`SGDMomentumOptimizer`](/documentation/Accelerate/BNNS/SGDMomentumOptimizer)

[`AdamWOptimizer`](/documentation/Accelerate/BNNS/AdamWOptimizer)

[`AdamOptimizer`](/documentation/Accelerate/BNNS/AdamOptimizer)

[`RMSPropOptimizer`](/documentation/Accelerate/BNNS/RMSPropOptimizer)

---

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