Review of Ensemble Based Classification Algorithms for Nonstationary and Imbalanced Data
Journal Title: IOSR Journals (IOSR Journal of Computer Engineering) - Year 2014, Vol 16, Issue 1
Abstract
Learning data samples from a non-stationary distribution has been shown to be a very challenging problem in machine learning, because the joint probability distribution between the data and classes changes over time. Most real time problems as they change with time can suffer concept drift. For example, a recommender or advertising system, in which customer’s behavior may change depending on the time of the year, on the inflation and on new products made available. An additional challenge arises when the classes to be learned are not represented equally in the training data i.e. classes are imbalanced, as most machine learning algorithms work well only when the class distributions are balanced. The objective of this paper is to review the ensemble classification algorithms on the framework of non-stationary and imbalanced dataset, with focus on two-class problems. In addition, we develop a thorough comparison of these algorithms by the consideration of the most significant published approaches.
Authors and Affiliations
Meenakshi A. Thalor
Keywords
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