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arXiv 2303.09331cs.LG
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基于模型的概念漂移解释

Model Based Explanations of Concept Drift

Bielefeld University(比勒费尔德大学)

Fabian Hinder, Valerie Vaquet, Johannes Brinkrolf, Barbara Hammer

摘要:

概念漂移的概念是指产生观测数据的分布随时间变化的现象。如果存在漂移,机器学习模型可能会变得不准确,需要调整。虽然确实存在检测概念漂移或在存在观察到的漂移的情况下调整模型的方法,但解释漂移的问题,即,以人类可理解的方式描述分布的潜在复杂和高维变化,迄今为止几乎没有被考虑。这个问题是重要的,因为它能够检查的最突出的特点,如何和在漂移表现自己。因此,它使人类能够理解这种变化,并增加对终身学习模式的接受。在本文中,我们提出了一种新的技术来表征概念漂移的空间特征的特性变化的基础上,各种解释技术。为此,我们提出了一种方法来减少概念漂移的解释,以适当的方式提取有关漂移的相关信息训练的模型的解释。这样就有了各种各样的解释方案。这样,就可以为当前的漂移解释问题选择一种合适的方法。我们概述了这种方法的潜力,并在几个例子中证明了它的实用性。

英文摘要:

The notion of concept drift refers to the phenomenon that the distribution generating the observed data changes over time. If drift is present, machine learning models can become inaccurate and need adjustment. While there do exist methods to detect concept drift or to adjust models in the presence of observed drift, the question of explaining drift, i.e., describing the potentially complex and high dimensional change of distribution in a human-understandable fashion, has hardly been considered so far. This problem is of importance since it enables an inspection of the most prominent characteristics of how and where drift manifests itself. Hence, it enables human understanding of the change and it increases acceptance of life-long learning models. In this paper, we present a novel technology characterizing concept drift in terms of the characteristic change of spatial features based on various explanation techniques. To do so, we propose a methodology to reduce the explanation of concept drift to an explanation of models that are trained in a suitable way extracting relevant information regarding the drift. This way a large variety of explanation schemes is available. Thus, a suitable method can be selected for the problem of drift explanation at hand. We outline the potential of this approach and demonstrate its usefulness in several examples.

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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