Outlier Detection with Innovative Explanation Facility over a Very Large Financial Database

M. Mejía-Lavalle
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引用次数: 5

Abstract

Outlier detection, or detection of exceptional data, is a key element for financial databases, because the necessity of fraud prevention. Here, we propose an efficient method for this task which includes an innovative end-user explanation facility. The best design was based on an unsupervised learning schema, which uses an adaptation of the Artificial Neural Network paradigms and the Expert System shells. In our method, the cluster that contains the smaller number of instances is considered as outlier data. The method provides an explanation to the end user about why this cluster is exceptional with regard to the data universe. The proposed method has been tested and compared successfully using well-known academic data, and a real and very large financial database.
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在一个非常大的金融数据库上用创新的解释工具进行离群值检测
异常值检测或异常数据检测是金融数据库的关键要素,因为它需要防止欺诈。在这里,我们提出了一种有效的方法来完成这项任务,其中包括一个创新的终端用户解释设施。最佳设计是基于一种无监督学习模式,它使用了人工神经网络范式和专家系统外壳的适应。在我们的方法中,包含较少实例数量的集群被视为离群数据。该方法向最终用户解释了为什么这个集群在数据领域中是例外的。所提出的方法已通过知名的学术数据和一个真实的、非常大的金融数据库进行了测试和比较。
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