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Shaker, Ammar and Hüllermeier, Eyke ORCID logoORCID: https://orcid.org/0000-0002-9944-4108 (2015): Recovery analysis for adaptive learning from non-stationary data streams: Experimental design and case study. In: Neurocomputing, Vol. 150, No. A: pp. 250-264

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The extension of machine learning methods from static to dynamic environments has received increasing attention in recent years; in particular, a large number of algorithms for learning from so-called data streams has been developed. An important property of dynamic environments is non-stationarity, i.e., the assumption of an underlying data generating process that may change over time. Correspondingly, the ability to properly react to so-called concept change is considered as an important feature of learning algorithms. In this paper, we propose a new type of experimental analysis, called recovery analysis, which is aimed at assessing the ability of a learner to discover a concept change quickly, and to take appropriate measures to maintain the quality and generalization performance of the model. We develop recovery analysis for two types of supervised learning problems, namely classification and regression. Moreover, as a practical application, we make use of recovery analysis in order to compare model-based and instance-based approaches to learning on data streams.

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