Optimizing Gini coefficient of probabilistic rough set regions using Game-Theoretic Rough Sets
Zhang Yan · 2013
Probabilistic rough sets define positive, negative and boundary regions, and the probabilistic thresholds determine the Gini coefficient of three regions. We use Game-Theoretic Rough Sets to investigate the relationship between changes in probabilistic thresholds and their impacts on the Gini coefficient of rough set regions. The example shows that effective probabilistic thresholds values corresponding to applicable Gini coefficient of probabilistic regions can be derived by repeatedly tuning the thresholds values.