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# init(type:reductionType:weight:)

Creates a loss descriptor with the loss function, reduction type, and weight you specify.

```
convenience init(type lossType: MLCLossType, reductionType: MLCReductionType, weight: Float)
```

## Parameters

`lossType`

The loss function type.

`reductionType`

The reduction operation type.

`weight`

A scalar floating-point weight value.

## Discussion

---

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