---
title: MPSNNForwardLossNode
framework: metalperformanceshaders
role: symbol
role_heading: Class
path: metalperformanceshaders/mpsnnforwardlossnode
---

# MPSNNForwardLossNode

## Declaration

```swift
class MPSNNForwardLossNode
```

## Topics

### Initializers

- [init(source:labels:lossDescriptor:)](metalperformanceshaders/mpsnnforwardlossnode/init(source:labels:lossdescriptor:).md)
- [init(source:labels:weights:lossDescriptor:)](metalperformanceshaders/mpsnnforwardlossnode/init(source:labels:weights:lossdescriptor:)-8c2l6.md)
- [init(source:labels:weights:lossDescriptor:)](metalperformanceshaders/mpsnnforwardlossnode/init(source:labels:weights:lossdescriptor:)-9bsd7.md)
- [init(sources:lossDescriptor:)](metalperformanceshaders/mpsnnforwardlossnode/init(sources:lossdescriptor:).md)

### Instance Properties

- [delta](metalperformanceshaders/mpsnnforwardlossnode/delta.md)
- [epsilon](metalperformanceshaders/mpsnnforwardlossnode/epsilon.md)
- [labelSmoothing](metalperformanceshaders/mpsnnforwardlossnode/labelsmoothing.md)
- [lossType](metalperformanceshaders/mpsnnforwardlossnode/losstype.md)
- [numberOfClasses](metalperformanceshaders/mpsnnforwardlossnode/numberofclasses.md)
- [propertyCallBack](metalperformanceshaders/mpsnnforwardlossnode/propertycallback.md)
- [reduceAcrossBatch](metalperformanceshaders/mpsnnforwardlossnode/reduceacrossbatch.md)
- [reductionType](metalperformanceshaders/mpsnnforwardlossnode/reductiontype.md)
- [weight](metalperformanceshaders/mpsnnforwardlossnode/weight.md)

### Instance Methods

- [gradientFilter(withSource:)](metalperformanceshaders/mpsnnforwardlossnode/gradientfilter(withsource:).md)
- [gradientFilter(withSources:)](metalperformanceshaders/mpsnnforwardlossnode/gradientfilter(withsources:).md)
- [gradientFilters(withSource:)](metalperformanceshaders/mpsnnforwardlossnode/gradientfilters(withsource:).md)
- [gradientFilters(withSources:)](metalperformanceshaders/mpsnnforwardlossnode/gradientfilters(withsources:).md)

## Relationships

### Inherits From

- [MPSNNFilterNode](metalperformanceshaders/mpsnnfilternode.md)

### Conforms To

- [CVarArg](swift/cvararg.md)
- [CustomDebugStringConvertible](swift/customdebugstringconvertible.md)
- [CustomStringConvertible](swift/customstringconvertible.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [NSObjectProtocol](objectivec/nsobjectprotocol.md)