What is semantic tokenization in a recommender system?
It represents items through short sequences of learned tokens that encode content and engagement patterns, rather than assigning each item only a unique opaque identifier. Related items can share parts of the representation.
Answered in
Meta’s Recommender Tokens Turn Product Meaning Into Reusable VocabularyMeta’s GenRecs approach replaces one-item IDs with semantic token sequences. The promise is better generalization; the hard part is measuring it fairly.
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