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Numerical variable reconstruction from ordinal categories based on probability distributions | IEEE Conference Publication | IEEE Xplore

Numerical variable reconstruction from ordinal categories based on probability distributions


Abstract:

Ordinal classification problems are an active research area in the machine learning community. Many previous works adapted state-of-art nominal classifiers to improve ord...Show More

Abstract:

Ordinal classification problems are an active research area in the machine learning community. Many previous works adapted state-of-art nominal classifiers to improve ordinal classification so that the method can take advantage of the ordinal structure of the dataset. However, these method improvements often rely upon a complex mathematical basis and they usually are attached to the training algorithm and model. This paper presents a novel method for generally adapting classification and regression models, such as artificial neural networks or support vector machines. The ordinal classification problem is reformulated as a regression problem by the reconstruction of a numerical variable which represents the different ordered class labels. Despite the simplicity and generality of the method, results are competitive in comparison with very specific methods for ordinal regression.
Date of Conference: 22-24 November 2011
Date Added to IEEE Xplore: 02 January 2012
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Conference Location: Cordoba, Spain

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