Explain the challenges and solutions for ML model personalization at scale.
Instruction: Discuss the technical and operational challenges of delivering personalized ML model predictions at scale, and potential solutions.
Context: This question tests the candidate's ability to scale personalized ML solutions, addressing the balance between customization and scalability challenges.
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Personalization at scale is hard because the system needs to learn from many users or entities while still delivering individualized behavior under tight latency, storage, and...