ConceptNormalized Discounted Cumulative Gain / 归一化折损累计增益
NDCG@K
A retrieval evaluation metric that jointly considers the relevance strength and ranking position of documents, measuring overall ranking quality through normalized discounted cumulative gain.
Timeline (last 90 days)
Oct 13
NDCG@K takes into account both relevance strength and ranking position, assigning a relevance score to the document at each position and applying logarithmic discounting by ranking position, and finally dividing by the ideal ranking score for normalization so that the result falls between 0 and 1.
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