Published on Thu Nov 29 2018

A snapshot on nonstandard supervised learning problems: taxonomy, relationships and methods

David Charte, Francisco Charte, Salvador García, Francisco Herrera

Machine learning is a field which studies how machines can alter and adapt their behavior. The best known areas of machine learning are supervised learning and unsupervised learning. The goal of this paper is to provide the reader with a broad view on the distinct variations of nonstandard supervised problems.

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Abstract

Machine learning is a field which studies how machines can alter and adapt their behavior, improving their actions according to the information they are given. This field is subdivided into multiple areas, among which the best known are supervised learning (e.g. classification and regression) and unsupervised learning (e.g. clustering and association rules). Within supervised learning, most studies and research are focused on well known standard tasks, such as binary classification, multiclass classification and regression with one dependent variable. However, there are many other less known problems. These are what we generically call nonstandard supervised learning problems. The literature about them is much more sparse, and each study is directed to a specific task. Therefore, the definitions, relations and applications of this kind of learners are hard to find. The goal of this paper is to provide the reader with a broad view on the distinct variations of nonstandard supervised problems. A comprehensive taxonomy summarizing their traits is proposed. A review of the common approaches followed to accomplish them and their main applications is provided as well.

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