http://thinknook.com/testing-diagnosing-a-text-classification-algorithm-2013-01-19/?utm_source=rss&utm_medium=rss&utm_campaign=testing-diagnosing-a-text-classification-algorithm Because the world needs another Business Intelligence blog! Fri, 14 Sep 2018 19:30:18 +0000 hourly 1 https://wordpress.org/?v=4.1.41 http://thinknook.com/testing-diagnosing-a-text-classification-algorithm-2013-01-19/#comment-1230 Mon, 21 Jan 2013 13:05:54 +0000 http://thinknook.com/?p=922#comment-1230 […] have written an article that discusses precision and recall in the context of the Confusion Matrix. The idea here is to tweak the system so when it fails, it does so in a manner that is […]

]]> http://thinknook.com/testing-diagnosing-a-text-classification-algorithm-2013-01-19/#comment-1222 Sun, 20 Jan 2013 20:21:55 +0000 http://thinknook.com/?p=922#comment-1222 […] You could extend this solution and assign different threshold based on the classification results, for example you could say that if the returned classification is Art then our threshold is 0.5, but if the returned classification is Business then our threshold should be 0.6 instead, because we know that our Business classification returns a higher level of False Positives (low precision). If you are attempting variable threshold like that I recommend reading the article on the confusion matrix and precision in classification. […]

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