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Ensemble Selection based on Classifier Prediction Confidence
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DOI：10.1016/j.patcog.2019.107104.png)
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摘要
En 中文
Ensemble selection is one of the most studied topics in ensemble learning because a selected subset of base classifiers may perform better than the whole ensemble system. In recent years, a great many ensemble selection methods have been introduced. However, many of these lack flexibility: either a fixed subset of classifiers is pre-selected for all test samples (static approach), or the selection of classifiers depends upon the performance of techniques that define the region of competence (dynamic approach). In this paper, we propose an ensemble selection method that takes into account each base classifier's confidence during classification and the overall credibility of the base classifier in the ensemble. In other words, a base classifier is selected to predict for a test sample if the confidence in its prediction is higher than its credibility threshold. The credibility thresholds of the base classifiers are found by minimizing the empirical 0-1 loss on the entire training observations. In this way, our approach integrates both the static and dynamic aspects of ensemble selection. Experiments on 62 datasets demonstrate that the proposed method achieves much better performance in comparison to some ensemble methods. (C) 2019 Elsevier Ltd. All rights reserved.
Keyword:
Ensemble method
Multiple classifier system
Ensemble selection
Classifier selection
Artificial bee colony
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IF:
7.6
论文数:
1.3W
被引数:
4.5W
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