Design a Dish Recommender System for Zomato (Case Study)

Case Study: How would you design a recommender system for Zomato to recommend dishes to a user? Approach: Clarify objective (engagement vs order conversion), then discuss candidate generation (collaborative filtering on order history, content-based signals from dish/cuisine attributes, popularity/trending signals) and ranking (a model blending relevance, freshness, price sensitivity, restaurant availability). Cover data pipeline, feature freshness, and how to A/B test recommendation quality against a baseline (e.g. popularity-based).