Evaluation and Analysis of Supervised Learning Algorithms and Classifiers
Niklas Lavesson · 2006
The fundamental question studied in this thesis is how to evaluate and analyse supervised learning algorithms and classifiers. As a first step, we analyse current evaluation methods. Each method is described and categorised according to a number of properties. One conclusion of the analysis is that performance is often only measured in terms of accuracy, e.g., through cross-validation tests. However, some researchers have questioned the validity of using accuracy as the only performance metric. Also, the number of instances available for evaluation is usually very limited. In order to deal with these issues, measure functions have been suggested as a promising approach. However, a limitation of current measure functions is that they can only handle two-dimensional instance spaces. We present the design and implementation of a generalised multi-dimensional