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- W89855045 abstract "We show that classification rules used in ordinal regression are equivalent to a certain class of linear multi-class classifiers. This observation not only allows to design new learning algorithms for ordinal regression using existing methods for multi-class classification but it also allows to derive new models for ordinal regression. For example, one can convert learning of ordinal classifier with (almost) arbitrary loss function to a convex unconstrained risk minimization problem for which many efficient solvers exist. The established equivalence also allows to increase discriminative power of the ordinal classifier without need to use kernels by introducing a piece-wise ordinal classifier. We demonstrate advantages of the proposed models on standard benchmarks as well as in solving a real-life problem. In particular, we show that the proposed piece-wise ordinal classifier applied to visual age estimation outperforms other standard prediction models." @default.
- W89855045 created "2016-06-24" @default.
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- W89855045 date "2013-01-01" @default.
- W89855045 modified "2023-10-13" @default.
- W89855045 title "MORD: Multi-class Classifier for Ordinal Regression" @default.
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- W89855045 doi "https://doi.org/10.1007/978-3-642-40994-3_7" @default.
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