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arXiv 2402.04465cs.CV
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BAdaCost:带代价的多类提升算法

BAdaCost: Multi-class Boosting with Costs

Universidad Rey Juan Carlos(胡安·卡洛斯国王大学);Universidad Politécnica de Madrid(马德里理工大学)

Antonio Fernández-Baldera, José M. Buenaposada, Luis Baumela

AI总结:

提出BAdaCost多类代价敏感提升算法,通过引入CMEL损失统一多种提升方法,实验显示其在非对称分类及人脸、汽车检测中性能显著提升。

摘要:

我们提出BAdaCost,一种多类代价敏感分类算法。它结合一组代价敏感的多类弱学习器,在提升(Boosting)框架内获得强分类规则。为推导该算法,我们引入CMEL(代价敏感多类指数损失),该损失泛化了多种分类算法(如AdaBoost、SAMME、代价敏感AdaBoost和PIBoost)所优化的损失函数,从而在统一的理论框架下将它们联系起来。在实验中,我们证明BAdaCost相比以往的多类代价敏感方法取得了显著的性能提升。所提算法在非对称多类分类中的优势也在实际的多视角人脸和汽车检测问题中得到了评估。

英文摘要:

We present BAdaCost, a multi-class cost-sensitive classification algorithm. It combines a set of cost-sensitive multi-class weak learners to obtain a strong classification rule within the Boosting framework. To derive the algorithm we introduce CMEL, a Cost-sensitive Multi-class Exponential Loss that generalizes the losses optimized in various classification algorithms such as AdaBoost, SAMME, Cost-sensitive AdaBoost and PIBoost. Hence unifying them under a common theoretical framework. In the experiments performed we prove that BAdaCost achieves significant gains in performance when compared to previous multi-class cost-sensitive approaches. The advantages of the proposed algorithm in asymmetric multi-class classification are also evaluated in practical multi-view face and car detection problems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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