# Overview The Normalized Discounted Cumulative Gain (NDCG) is... #flashcard Discounts relevance by log-rank; good all-rounder. - Intuition: "How well are the most relevant items ranked at the top?" - Calculation: Sum the relevance scores of results, discounted by position (items lower in the ranking contribute less), then normalize by the "ideal" ranking - Higher positions matter much more than lower ones <!--ID: 1751507777228--> # Key Considerations # Pros # Cons # Use Cases # Related Topics