# enumerateTokenVectors(in:using:) Iterates over the embedding vectors corresponding to the subword tokens within the specified range of the input string. ``` @nonobjc func enumerateTokenVectors(in range: Range, using block: ([Double], Range) -> Bool) ``` ## Parameters `range` The range in the string to enumerate. `block` A block that contains each token’s embedding vector and its corresponding character range in the string. ## Discussion Use this method to access the individual (subword) token embeddings. You can apply pooling or combination techniques to aggregate these subword vectors into a single representation for a word, phrase, or entire input. Common pooling techniques include: - Mean pooling to take the average of subword vectors. - Max pooling for finding the element-wise maximum across tokens. - Use the embeddings of the first or last subword tokens to represent the entire input. --- 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)