# TabularEstimatorToSupervisedAdaptor An adaptor that exposes a tabular estimator as a tabular supervised estimator. ``` struct TabularEstimatorToSupervisedAdaptor where Estimator : TabularEstimator ``` ## Topics ### Creating an adaptor [`init(Estimator, annotationColumnID: ColumnID)`](/documentation/CreateMLComponents/TabularEstimatorToSupervisedAdaptor/init(_:annotationColumnID:)) Creates a tabular estimator supervised adaptor. ### Getting the properties [`var annotationColumnID: ColumnID`](/documentation/CreateMLComponents/TabularEstimatorToSupervisedAdaptor/annotationColumnID) The annotation column identifier. [`let estimator: Estimator`](/documentation/CreateMLComponents/TabularEstimatorToSupervisedAdaptor/estimator) The wrapped estimator. ### Encoding and decoding [`func encode(Estimator.Transformer, to: inout any EstimatorEncoder) throws`](/documentation/CreateMLComponents/TabularEstimatorToSupervisedAdaptor/encode(_:to:)) Encodes a fitted transformer. [`func decode(from: inout any EstimatorDecoder) throws -> Estimator.Transformer`](/documentation/CreateMLComponents/TabularEstimatorToSupervisedAdaptor/decode(from:)) Decodes a previously fitted transformer. ### Fitting [`func fitted(to: DataFrame, validateOn: DataFrame?, eventHandler: EventHandler?) async throws -> Estimator.Transformer`](/documentation/CreateMLComponents/TabularEstimatorToSupervisedAdaptor/fitted(to:validateOn:eventHandler:)) Returns the tabular transformer fitted using the provided tabular estimator. [`protocol Transformer`](/documentation/CreateMLComponents/Transformer) A transformer that takes an input and produces an output. ## Relationships ### Conforms To [`SupervisedTabularEstimator`](/documentation/CreateMLComponents/SupervisedTabularEstimator) [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`Sendable`](/documentation/Swift/Sendable) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)