Dynamic K in Retrieval Stage

Requirements In the retrieval layer of a recommender system, the number of candidates K forwarded to ranking is usually configured as a fixed hyperparameter. Propose a system or model that chooses K separately for each request instead of always using one constant value. This is intentionally open-ended, so you should establish the problem framing yourself. Address these areas: Success metric: how will you tell whether the selected K is appropriate? For instance, measure the…