Discounted cumulative gain - Revision history

Zeno Gantner: /* External links */ change MyMediaLite link

2011-09-24T10:07:29Z

External links: change MyMediaLite link

Zeno Gantner: moved Discounted Cumulative Gain to Discounted cumulative gain

2011-09-24T10:06:31Z

moved Discounted Cumulative Gain to Discounted cumulative gain

Zeno Gantner at 14:50, 10 August 2011

2011-08-10T14:50:24Z

Zeno Gantner: link fix

2011-08-10T14:49:33Z

link fix

Zeno Gantner at 14:09, 10 August 2011

2011-08-10T14:09:03Z

Zeno Gantner at 16:21, 6 June 2011

2011-06-06T16:21:59Z

Zeno Gantner at 16:21, 6 June 2011

2011-06-06T16:21:00Z

Zeno Gantner at 13:43, 6 June 2011

2011-06-06T13:43:59Z

Zeno Gantner at 12:52, 22 February 2011

2011-02-22T12:52:36Z

Sherry: Created page with "'''Discounted Cumulative Gain''' is a measure for ranking quality and measures the usefulness (gain) of an item based on its relevance and position in the provided list. For comp..."

2011-02-20T03:36:25Z

Created page with "'''Discounted Cumulative Gain''' is a measure for ranking quality and measures the usefulness (gain) of an item based on its relevance and position in the provided list. For comp..."

New page

'''Discounted Cumulative Gain''' is a measure for ranking quality and measures the usefulness (gain) of an item based on its relevance and position in the provided list. For comparing different lists of recommendations with various lengths, '''normalized Discounted Cumulative Gain''' or '''nDCG''' is used. It is based on dividing DCG by '''Ideal Discounted Cumulative Gain''' or '''IDCG'''. The more nDCG is, the better ranked list is provided.

[[Wikipedia: Discounted cumulative gain]]
[[Category:Evaluation measure]]

@@ Line 8: / Line 8: @@
 == External links ==
 * [[Wikipedia: Discounted cumulative gain]]
-* [http://github.com/zenogantner/MyMediaLite/blob/master/src/MyMediaLite/Eval/Items.cs C# implementation of DCG, IDCG, and nDCG] for binary responses (part of the [[MyMediaLite]] library)
+* [https://github.com/zenogantner/MyMediaLite/blob/master/src/MyMediaLite/Eval/Measures/NDCG.cs C# implementation of DCG, IDCG, and nDCG] for binary responses (part of the [[MyMediaLite]] library)
 * [http://www.cofirank.org/ CofiRank] contains an implementation of an algorithm that optimizes NDCG (for ratings).
 [[Category:Evaluation measure]]

@@ Line 8: / Line 8: @@
 == External links ==
 * [[Wikipedia: Discounted cumulative gain]]
-* [http://github.com/zenogantner/MyMediaLite/blob/master/src/MyMediaLite/Eval/Items.cs C# implementation of DCG, IDCG, and nDCG] (part of the [[MyMediaLite]] library)
+* [http://github.com/zenogantner/MyMediaLite/blob/master/src/MyMediaLite/Eval/Items.cs C# implementation of DCG, IDCG, and nDCG] for binary responses (part of the [[MyMediaLite]] library)
 * [http://www.cofirank.org/ CofiRank] contains an implementation of an algorithm that optimizes NDCG (for ratings).
 [[Category:Evaluation measure]]

@@ Line 8: / Line 8: @@
 == External links ==
 * [[Wikipedia: Discounted cumulative gain]]
-* [http://github.com/zenogantner/MyMediaLite/blob/master/src/MyMediaLite/Eval/ItemPredictionEval.cs C# implementation of DCG, IDCG, and nDCG] (part of the [[MyMediaLite]] library)
+* [http://github.com/zenogantner/MyMediaLite/blob/master/src/MyMediaLite/Eval/Items.cs C# implementation of DCG, IDCG, and nDCG] (part of the [[MyMediaLite]] library)
-* [http://www.cofirank.org/ CofiRank] contains an implementation of an algorithm that optimizes NDCG.
+* [http://www.cofirank.org/ CofiRank] contains an implementation of an algorithm that optimizes NDCG (for ratings).
 [[Category:Evaluation measure]]

@@ Line 2: / Line 2: @@
 For comparing different lists of recommendations with various lengths, '''normalized Discounted Cumulative Gain''' ('''nDCG'''/'''NDCG''') is used.
 It is computed by dividing the DCG by the '''Ideal Discounted Cumulative Gain''' or '''IDCG'''. The higher the nDCG, the better ranked list.
 == External links ==
 * [[Wikipedia: Discounted cumulative gain]]
 * [http://github.com/zenogantner/MyMediaLite/blob/master/src/MyMediaLite/Eval/ItemPredictionEval.cs C# implementation of DCG, IDCG, and nDCG] (part of the [[MyMediaLite]] library)
 [[Category:Evaluation measure]]

@@ Line 1: / Line 1: @@
-'''Discounted Cumulative Gain''' is a measure for ranking quality and measures the usefulness (gain) of an item based on its relevance and position in the provided list. For comparing different lists of recommendations with various lengths, '''normalized Discounted Cumulative Gain''' or '''nDCG''' is used.
+'''Discounted Cumulative Gain''' ('''DCG''') is a measure for ranking quality and measures the usefulness (gain) of an item based on its relevance and position in the provided list.
-It is based on dividing the DCG by the '''Ideal Discounted Cumulative Gain''' or '''IDCG'''. The higher the nDCG, the better ranked list.
+For comparing different lists of recommendations with various lengths, '''normalized Discounted Cumulative Gain''' ('''nDCG'''/'''NDCG''') is used.
 == External links ==