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Abstract: We present a probabilistic kernel approach to ordinal regression based on Gaussian processes. A threshold model that generalizes the probit function is used as the likelihood function for ordinal variables. Two inference techniques, based on the Laplace approximation and the expectation propagation algorithm respectively, are derived for hyperparameter learning and model selection. We compare these two Gaussian process approaches with a previous ordinal regression method based on support... (Update)
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BibTeX entry: (Update)
W. Chu and Z. Ghahramani, Gaussian processes for ordinal regression, Tech. report, University College London, 2004. http://citeseer.ist.psu.edu/chu05gaussian.html More
@misc{ chu04gaussian,
author = "W. Chu and Z. Ghahramani",
title = "Gaussian processes for ordinal regression",
text = "W. Chu and Z. Ghahramani, Gaussian processes for ordinal regression, Tech.
report, University College London, 2004.",
year = "2004",
url = "citeseer.ist.psu.edu/chu05gaussian.html" }
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