White Papers

Magical Thinking in Data Mining: Lessons From CoIL Challenge 2000

Overview CoIL challenge 2000 was a supervised learning contest that attracted 43 entries. The authors of 29 entries later wrote explanations of their work. This paper discusses these reports and reaches three main conclusions. First, naive Bayesian classifiers remain competitive in practice: they were used by both the winning entry and the next best entry. Second, identifying feature interactions correctly is important for maximizing predictive accuracy: this was the difference between the winning classifier and all others. Third and most important, too many researchers and practitioners in data mining do not appreciate properly the issue of statistical significance and the danger of overfitting.

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Publisher: University of California
File Format: PDF
Date Published: Oct 7, 2008
Format: White Papers
Topics: Knowledge and Data Management, Data Mining - Analysis

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