# UpdatableTabularEstimator A tabular estimator that can be incrementally updated. ``` protocol UpdatableTabularEstimator : TabularEstimator ``` ## Topics ### Appending [`func appending(_:)`](/documentation/CreateMLComponents/UpdatableTabularEstimator/appending(_:)) Composes this updatable tabular estimator with an updatable supervised tabular estimator. ### Adapting [`func adaptedAsSupervised(annotationColumnID: ColumnID) -> UpdatableTabularEstimatorToSupervisedAdaptor`](/documentation/CreateMLComponents/UpdatableTabularEstimator/adaptedAsSupervised(annotationColumnID:)) Exposes this updatable tabular estimator as a supervised tabular estimator. ### Encoding and decoding [`func encodeWithOptimizer(Self.Transformer, to: inout any EstimatorEncoder) throws`](/documentation/CreateMLComponents/UpdatableTabularEstimator/encodeWithOptimizer(_:to:)) Encodes the transformer and optimizer to an encoder. [`func decodeWithOptimizer(from: inout any EstimatorDecoder) throws -> Self.Transformer`](/documentation/CreateMLComponents/UpdatableTabularEstimator/decodeWithOptimizer(from:)) Reads the encoded transformer and optimizer with a decoder. ### Transforming [`func makeTransformer() -> Self.Transformer`](/documentation/CreateMLComponents/UpdatableTabularEstimator/makeTransformer()) Creates a default-initialized transformer suitable for incremental fitting. [`func update(inout Self.Transformer, with: DataFrame) async throws`](/documentation/CreateMLComponents/UpdatableTabularEstimator/update(_:with:)) [`func update(inout Self.Transformer, with: DataFrame, eventHandler: EventHandler?) async throws`](/documentation/CreateMLComponents/UpdatableTabularEstimator/update(_:with:eventHandler:)) Updates a transformer with a new sequence of examples. ## Relationships ### Conforming Types [`TabularTransformerToUpdatableEstimatorAdaptor`](/documentation/CreateMLComponents/TabularTransformerToUpdatableEstimatorAdaptor) [`PreprocessingUpdatableTabularEstimator`](/documentation/CreateMLComponents/PreprocessingUpdatableTabularEstimator) [`ColumnSelector`](/documentation/CreateMLComponents/ColumnSelector) ### Inherits From [`TabularEstimator`](/documentation/CreateMLComponents/TabularEstimator) --- 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)