Abstract

In online learning, the concept drifts refers to the situations where the objective variable conforming to the input data changes over time. This change in distribution of data over time can be studied in different forms namely abrupt, gradual, incremental and reoccurring concepts. This paper illustrates the incremental learning with concept drift, different forms of drift, causes of concept drift and present a set of illustrative concept drift applications related with real-life problems. The various dimensions such as learning speed, prediction and classification accuracy, mistakes penalty, adversary activities and true labels are also discussed in relevance to these applications having the problem of concept drift.

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