arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.03899cs.LGstat.ML
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密度固定:简单有效的基于类先验的正则化方法

Density Fixing: Simple yet Effective Regularization Method based on the Class Prior

Ridge-i Inc.(Ridge-i 公司)

Masanari Kimura, Ryohei Izawa

摘要:

机器学习模型存在过拟合问题,这是由于缺乏标记数据造成的。为了解决这个问题,我们提出了一个正则化方法的框架,称为密度固定,可用于监督和半监督学习。我们提出的正则化方法通过迫使模型近似类的先验分布或出现频率来提高泛化性能。这个正则化项是从极大似然估计公式中自然推导出来的,并且在理论上是合理的。我们进一步提供了所提出的方法,包括渐近行为的几个理论分析。我们在多个基准数据集上的实验结果足以支持我们的论点,我们认为这种简单有效的正则化方法在现实世界的机器学习问题中是有用的。

英文摘要:

Machine learning models suffer from overfitting, which is caused by a lack of labeled data. To tackle this problem, we proposed a framework of regularization methods, called density-fixing, that can be used commonly for supervised and semi-supervised learning. Our proposed regularization method improves the generalization performance by forcing the model to approximate the class's prior distribution or the frequency of occurrence. This regularization term is naturally derived from the formula of maximum likelihood estimation and is theoretically justified. We further provide the several theoretical analyses of the proposed method including asymptotic behavior. Our experimental results on multiple benchmark datasets are sufficient to support our argument, and we suggest that this simple and effective regularization method is useful in real-world machine learning 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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