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Add multi-label support to the confusion matrix metric #3452

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arjoly opened this Issue Jul 20, 2014 · 7 comments

4 participants

@arjoly
scikit-learn member
arjoly commented Jul 20, 2014

Currently the confusion_matrix support binary and multi-class classification, but not multi-label data yet.

@jnothman
scikit-learn member
@arjoly
scikit-learn member
arjoly commented Jul 20, 2014

The same as in the multiclass case, but the notion of true positive, true negative, false negative are different the multi-label case.

For example, this is explained in http://www.cnts.ua.ac.be/~vincent/pdf/microaverage.pdf

@jnothman
scikit-learn member
@arjoly
scikit-learn member
arjoly commented Jul 20, 2014

Okay, not actually a confusion matrix in the multiclass sense (which label
is confused with which), but a binarized error analysis.

Then we might want to add a function. It might be binarized_confusion_matrix or multilabel_confusion_matrix.

@Magellanea Magellanea added a commit to Magellanea/scikit-learn that referenced this issue Aug 31, 2014
@Magellanea Magellanea Implementing multilabel confusion matrix - Issue #3452 514287c
@Magellanea

@arjoly @jnothman This implements the multilabel_confusion_matrix function which computes the values True positives, true negatives, false positives and false negatives for a multi-label classification problem, was that what you expected to be the behavior of the multilabel_confusion_matrix

@rvraghav93 rvraghav93 added a commit to rvraghav93/scikit-learn that referenced this issue Jan 19, 2015
@Magellanea Magellanea Implementing multilabel confusion matrix - Issue #3452 670d4ca
@rvraghav93 rvraghav93 referenced this issue Jan 19, 2015
Open

[WIP] ENH Multilabel confusion matrix #4126

6 of 6 tasks complete
@rvraghav93 rvraghav93 added a commit to rvraghav93/scikit-learn that referenced this issue Jan 20, 2015
@Magellanea Magellanea Implementing multilabel confusion matrix - Issue #3452 4152703
@rvraghav93 rvraghav93 added a commit to rvraghav93/scikit-learn that referenced this issue Jan 27, 2015
@Magellanea Magellanea Implementing multilabel confusion matrix - Issue #3452 792a42e
@rvraghav93 rvraghav93 added a commit to rvraghav93/scikit-learn that referenced this issue Feb 1, 2015
@Magellanea Magellanea Implementing multilabel confusion matrix - Issue #3452 199157b
@rvraghav93 rvraghav93 added a commit to rvraghav93/scikit-learn that referenced this issue Feb 4, 2015
@Magellanea Magellanea Implementing multilabel confusion matrix - Issue #3452 e1ecb2f
@Florents-Tselai

What's the status on this?

@arjoly
scikit-learn member
arjoly commented Sep 28, 2015

The pr #3452 has stalled feel free to continue if you want to finish it.

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