NDCG Class Reference

Normalized discounted cumulative gain (NDCG) of a list of ranked items. More...

List of all members.

Static Public Member Functions

static double Compute (IList< int > ranked_items, ICollection< int > correct_items, ICollection< int > ignore_items=null)
 Compute the normalized discounted cumulative gain (NDCG) of a list of ranked items.

Detailed Description

Normalized discounted cumulative gain (NDCG) of a list of ranked items.

See http://recsyswiki.com/wiki/Discounted_Cumulative_Gain


Member Function Documentation

static double Compute ( IList< int >  ranked_items,
ICollection< int >  correct_items,
ICollection< int >  ignore_items = null 
) [inline, static]

Compute the normalized discounted cumulative gain (NDCG) of a list of ranked items.

See http://recsyswiki.com/wiki/Discounted_Cumulative_Gain

Parameters:
ranked_items a list of ranked item IDs, the highest-ranking item first
correct_items a collection of positive/correct item IDs
ignore_items a collection of item IDs which should be ignored for the evaluation
Returns:
the NDCG for the given data

The documentation for this class was generated from the following file:
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