Explain ranking cold-start strategies
Company: Google
Role: Machine Learning Engineer
Category: Machine Learning
Difficulty: medium
Interview Round: Technical Screen
Overview: This question evaluates an engineer's competency in handling cold-start for users and items, constructing and applying content-based embeddings, organizing feature groups (user, item, context, freshness, interaction), and distinguishing candidate generation from final ranking in large-scale video search and recommendation systems.
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