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| Seminar Schedule (Seminar Organizer: Prof. Ziv Bar-Joseph) | |
Machine Learning Lunchtime Chats
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Fall 2006 Seminar
Date: September 26, 2006 Time: 12:00 PM - 1:00 PM Location: 1305 Newell-Simon Hall Speaker: Robert C. Holte Professor Title: Cost-sensitive Classifier Evaluation Using Cost Curves Abstract: The evaluation of classifier performance in a cost-sensitive setting is straightforward if the operating conditions (misclassification costs and class distributions) are fixed and known. When this is not the case, evaluation requires a method of visualizing classifier performance across the full range of possible operating conditions. This talk argues that the classic technique for classifier performance visualization -- the ROC curve -- is inadequate for the needs of researchers and practitioners in several important respects. It then describes a different way of visualizing classifier performance -- the cost curve -- that overcomes these deficiencies. No familiarity with ROC curves or cost curves is necessary, they will be fully explained. Joint work with Chris Drummond (National Research Council, Ottawa)