arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2102.01458cs.LG
收藏

基于图模型的漂移估计

Drift Estimation with Graphical Models

University of Turin(都灵大学);University of Milan-Bicocca(米兰比可卡大学)

Luigi Riso, Marco Guerzoni

摘要:

本文研究了有监督机器学习中的概念漂移问题。我们利用图形模型来引出数据的可见结构,并从中推断隐藏上下文的变化。与先前的概念漂移检测方法不同,该应用不依赖于用于特定目标变量的监督机器学习模型,而是试图将概念漂移评估为数据集演变的独立特征。具体来说,我们研究如何通过查看新链接的创建和现有链接在不同时间段的消失来研究图形模型的演变。本文提出了一种方法,突出的变化,并最终产生一个指标来评估随着时间的推移的稳定性。本文评估的方法与真实世界的数据在澳大利亚电力市场。

英文摘要:

This paper deals with the issue of concept drift in supervised machine learn-ing. We make use of graphical models to elicit the visible structure of the dataand we infer from there changes in the hidden context. Differently from previous concept-drift detection methods, this application does not depend on the supervised machine learning model in use for a specific target variable, but it tries to assess the concept drift as independent characteristic of the evolution of a dataset. Specifically, we investigate how a graphical model evolves by looking at the creation of new links and the disappearing of existing ones in different time periods. The paper suggests a method that highlights the changes and eventually produce a metric to evaluate the stability over time. The paper evaluate the method with real world data on the Australian Electric market.

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。

↑