Model type of User-Personalization recipe

Question

What is the model family/type behind Amazon Personalize's User-Personalization recipe?

Answer

The underlying technology is decribed [in the paper "Temporal-contextual recommendation in real-time"](https://www.amazon.science/blog/amazon-researchers-win-best-paper-award-at-kdd).

However the recipe also has other additional features descibed in the documentation, such as [optimizing recommendations for a business metric](https://aws.amazon.com/blogs/machine-learning/optimize-personalized-recommendations-for-a-business-metric-of-your-choice-with-amazon-personalize/) and native processing [unstructured text data using NLP](https://aws.amazon.com/blogs/machine-learning/unlock-information-in-unstructured-text-to-personalize-product-and-content-recommendations-with-amazon-personalize/) among others.

Model type of User-Personalization recipe

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