Your question is Top Entity for a Query. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Given query logs (user id, timestamp, country, query, clicked entity), design a module that outputs the top 1 entity for a query.
Asked in the round 3 stage.
Address the data representation, candidate generation or lookup strategy, model choice, training and serving flow, and how you would evaluate the top-1 prediction. Explain how the system handles unseen queries, sparse users, multiple clicked entities, noisy logs, and changing query behavior. Discuss latency, freshness, monitoring, and retraining decisions. State any assumptions you need because traffic, catalog size, and latency requirements are not provided.