RankingMetrics.NormalizedDiscountedCumulativeGains Property
Definition
Important
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List of normalized discounted cumulative gains (NDCG), where the N-th element represents NDCG@N. Search resuls vary in length depending on query, so different rankers cannot be consistently compared using DCG alone unless the DCG is normalized. This is done by calculating the maximum DCG (also known as Ideal DCG), which is the DCG for the ideal ordering of search results sorted by their relative relevance.
$NDCG@N = \frac{DCG@N}{MaxDCG@N}$
public System.Collections.Generic.IReadOnlyList<double> NormalizedDiscountedCumulativeGains { get; }member this.NormalizedDiscountedCumulativeGains : System.Collections.Generic.IReadOnlyList<double>Public ReadOnly Property NormalizedDiscountedCumulativeGains As IReadOnlyList(Of Double)Property Value
Remarks
Normalized Discounted Cumulative Gain