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2009

Evaluating Algorithms for Concept Description

9 years 1 months ago
Evaluating Algorithms for Concept Description
When performing concept description, models need to be evaluated both on accuracy and comprehensibility. A comprehensible concept description model should present the most important relationships in the data in an accurate and understandable way. Two natural representations for this are decision trees and decision lists. In this study, the two decision list algorithms RIPPER and Chipper, and the decision tree algorithm C4.5, are evaluated for concept description, using publicly available datasets. The experiments show that C4.5 performs very well regarding accuracy and brevity, i.e. the ability to classify instances with few tests, but also produces large models that are hard to survey and contain many extremely specific rules, thus not being good concept descriptions. The decision list algorithms perform reasonably well on accuracy, and are mostly able to produce small models with relatively good predictive performance. Regarding brevity, Chipper is better than RIPPER, using on averag...
Cecilia Sönströd, Ulf Johansson, Tuve L&
Added 17 Feb 2011
Updated 17 Feb 2011
Type Journal
Year 2009
Where DMIN
Authors Cecilia Sönströd, Ulf Johansson, Tuve Löfström
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