The Lemur Project / Bugs / #219 LambdaRank(with AP optimization) error

#219 LambdaRank(with AP optimization) error

Milestone: v1.x

Status: closed

Owner: David Fisher

Labels: RankLib (15)

Priority: 1

Updated: 2013-12-12

Created: 2013-10-10

Creator: David Fisher

Private: No

Reported in https://sourceforge.net/p/lemur/discussion/ranklib/thread/c913786c/?limit=25#af0d/4509

In source code, delta AP values for rank_i and rank_j are being calculated according to papers I read so far. Nevertheless, for the documents between rank_i and rank_j, you are adding the number of relevant documents to diff value till rank_k which is wrong according to those papers.

To ship in 12/2013 release

Discussion

David Pane - 2013-12-12

status: open --> closed
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LambdaRank(with AP optimization) error

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#219 LambdaRank(with AP optimization) error

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