# TemporalEstimator An estimator that creates a transformer by fitting to a sequence of temporal features. ``` protocol TemporalEstimator ``` ## Topics ### Reading and writing [`func read(from: URL) throws -> Self.Transformer`](/documentation/CreateMLComponents/TemporalEstimator/read(from:)) Reads the encoded transformer from a file. [`func write(Self.Transformer, to: URL, overwrite: Bool) throws`](/documentation/CreateMLComponents/TemporalEstimator/write(_:to:overwrite:)) Writes the encoded transformer to a file. ### Appending [`func appending(_:)`](/documentation/CreateMLComponents/TemporalEstimator/appending(_:)) Composes this temporal estimator with a supervised temporal estimator. ### Adapting and fitting [`func adaptedAsSupervised(annotationType: Annotation.Type) -> TemporalEstimatorToSupervisedAdaptor`](/documentation/CreateMLComponents/TemporalEstimator/adaptedAsSupervised(annotationType:)) Exposes this temporal estimator as a supervised temporal estimator. [`func fitted(to: InputSequence) async throws -> Self.Transformer`](/documentation/CreateMLComponents/TemporalEstimator/fitted(to:)) [`func fitted(to: InputSequence, eventHandler: EventHandler?) async throws -> Self.Transformer`](/documentation/CreateMLComponents/TemporalEstimator/fitted(to:eventHandler:)) Fits a transformer to a sequence of examples. [`associatedtype Transformer : TemporalTransformer`](/documentation/CreateMLComponents/TemporalEstimator/Transformer) The transformer type created by this estimator. ### Encoding and decoding [`func encode(Self.Transformer, to: inout any EstimatorEncoder) throws`](/documentation/CreateMLComponents/TemporalEstimator/encode(_:to:)) Encodes a fitted transformer. [`func decode(from: inout any EstimatorDecoder) throws -> Self.Transformer`](/documentation/CreateMLComponents/TemporalEstimator/decode(from:)) Decodes a previously fitted transformer. ## Relationships ### Conforming Types [`PreprocessingUpdatableTemporalEstimator`](/documentation/CreateMLComponents/PreprocessingUpdatableTemporalEstimator) [`UpdatableEstimatorToTemporalAdaptor`](/documentation/CreateMLComponents/UpdatableEstimatorToTemporalAdaptor) [`EstimatorToTemporalAdaptor`](/documentation/CreateMLComponents/EstimatorToTemporalAdaptor) [`TemporalTransformerToEstimatorAdaptor`](/documentation/CreateMLComponents/TemporalTransformerToEstimatorAdaptor) [`PreprocessingTemporalEstimator`](/documentation/CreateMLComponents/PreprocessingTemporalEstimator) [`TemporalTransformerToUpdatableEstimatorAdaptor`](/documentation/CreateMLComponents/TemporalTransformerToUpdatableEstimatorAdaptor) ### Inherited By [`UpdatableTemporalEstimator`](/documentation/CreateMLComponents/UpdatableTemporalEstimator) --- 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)