# EstimatorDecoder A type that can decode values from a model representation. ``` protocol EstimatorDecoder ``` ## Topics ### Decoding values [`func decode(T.Type) throws -> T`](/documentation/CreateMLComponents/EstimatorDecoder/decode(_:)) Decodes a value. [`func decodeOptimizer(T.Type) throws -> T`](/documentation/CreateMLComponents/EstimatorDecoder/decodeOptimizer(_:)) Decodes an optimizer value. --- 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)