A1 Refereed original research article in a scientific journal
Convex Support Vector Regression
Authors: Liao Zhiqiang, Dai Sheng, Kuosmanen Timo
Publisher: Elsevier
Publication year: 2023
Journal: European Journal of Operational Research
Journal acronym: EUR J OPER RES
eISSN: 1872-6860
DOI: https://doi.org/10.1016/j.ejor.2023.05.009
Web address : https://www.sciencedirect.com/science/article/pii/S0377221723003715
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/179441003
Nonparametric regression subject to convexity or concavity constraints is increasingly popular in economics, finance, operations research, machine learning, and statistics. However, the conventional convex regression based on the least squares loss function often suffers from overfitting and outliers. This paper proposes to address these two issues by introducing the convex support vector regression (CSVR) method, which effectively combines the key elements of convex regression and support vector regression. Numerical experiments demonstrate the performance of CSVR in prediction accuracy and robustness that compares favorably with other state-of-the-art methods.
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