关键词: 集成学习, 分类器, 基分类器, 多样性, 分类器组合

Abstract: After analyzing different definitions of diversity, this paper firstly proposes three factors that should be considered when measuring the diversity. Then it presents a new definition and measurement criterion of diversity,taking the concept of margin into consideration. In the end, the experimental results show that when used in hill-climbing algorithm, this new criterion can pick out classifiers subset with higher accuracy, compared with existed classical definitions of diversity and other criterion.

Key words: ensemble learning, classifier, base classifier, diversity, classifiers combination