Please use this identifier to cite or link to this item: http://repositorio.inesctec.pt/handle/123456789/4624
Title: A Survey of Predictive Modeling on Im balanced Domains
Authors: Paula Oliveira Branco
Luís Torgo
Rita Paula Ribeiro
Issue Date: 2016
Abstract: Many real-world data-mining applications involve obtaining predictive models using datasets with strongly imbalanced distributions of the target variable. Frequently, the least-common values of this target variable are associated with events that are highly relevant for end users (e.g., fraud detection, unusual returns on stock markets, anticipation of catastrophes, etc.). Moreover, the events may have different costs and benefits, which, when associated with the rarity of some of them on the available training data, creates serious problems to predictive modeling techniques. This article presents a survey of existing techniques for handling these important applications of predictive analytics. Although most of the existing work addresses classification tasks (nominal target variables), we also describe methods designed to handle similar problems within regression tasks (numeric target variables). In this survey, we discuss the main challenges raised by imbalanced domains, propose a definition of the problem, describe the main approaches to these tasks, propose a taxonomy of the methods, summarize the conclusions of existing comparative studies as well as some theoretical analyses of some methods, and refer to some related problems within predictive modeling.
URI: http://repositorio.inesctec.pt/handle/123456789/4624
http://dx.doi.org/10.1145/2907070
metadata.dc.type: article
Publication
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