# UpdatableEstimator Implementations ## Topics ### Instance Methods [`func decodeWithOptimizer(from: inout any EstimatorDecoder) throws -> OrdinalEncoder.Transformer`](/documentation/CreateMLComponents/OrdinalEncoder/decodeWithOptimizer(from:)) Reads the encoded transformer with a decoder. [`func encodeWithOptimizer(OrdinalEncoder.Transformer, to: inout any EstimatorEncoder) throws`](/documentation/CreateMLComponents/OrdinalEncoder/encodeWithOptimizer(_:to:)) Encodes the transformer to an encoder. [`func makeTransformer() -> OrdinalEncoder.Transformer`](/documentation/CreateMLComponents/OrdinalEncoder/makeTransformer()) Creates a default-initialized transformer suitable for incremental fitting. [`func update(inout OrdinalEncoder.Transformer, with: some Sequence>, eventHandler: EventHandler?) throws`](/documentation/CreateMLComponents/OrdinalEncoder/update(_:with:eventHandler:)) Updates a transformer with a new sequence of examples. --- 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)