4.5 Article

Pruning the Ensemble of ANN Based on Decision Tree Induction

Journal

NEURAL PROCESSING LETTERS
Volume 48, Issue 1, Pages 53-70

Publisher

SPRINGER
DOI: 10.1007/s11063-017-9703-6

Keywords

Neural network ensemble; Ordering-based ensemble pruning; Decision tree induction; Diversity; Margin distribution

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Ensemble learning is a powerful approach for achieving more accurate predictions compared with single classifier. However, this powerful classification ability is achieved at the expense of heavy storage requirements and computational burdens on the ensemble. Ensemble pruning is a crucial step for the reduction of the predictive overhead without worsening the performance of original ensemble. This paper suggests an efficient and effective ordering-based ensemble pruning based on the induction of decision tree. The suggested method maps the dataset and base classifiers to a new dataset where the ensemble pruning can be transformed to a feature selection problem. Furthermore, a set of accurate, diverse and complementary base classifiers can be selected by the induction of decision tree. Moreover, an evaluation function that deliberately favors the candidate sub-ensembles with an improved performance in classifying low margin instances has also been designed. The comparative experiments on 24 benchmark datasets demonstrate the effectiveness of our proposed method.

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