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# MLObjectDetector.ModelParameters.FeatureExtractorType

The underlying base model that extracts image features for an object-detector training session.

```
enum FeatureExtractorType
```

## Topics

### Designating a feature extractor

[`case objectPrint(revision: Int)`](/documentation/CreateML/MLObjectDetector/ModelParameters-swift.struct/FeatureExtractorType/objectPrint(revision:))

A feature extractor you use with a transfer-learning algorithm for object detectors.

## Relationships

### Conforms To

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Sendable`](/documentation/Swift/Sendable)

---

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