Robust non-convex least squares loss function for regression with outliers
Robust non-convex least squares loss function for regression with outliers
复制标题
用于异常值回归的鲁棒非凸最小二乘损失函数
DOI:
10.1016/j.knosys.2014.08.003
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发表时间:
2014-11
期刊:
影响因子:
--
通讯作者:
Zhong Ping
中科院分区:
文献类型:
--
作者:
Wang Kuaini;Zhong Ping
In this paper, we propose a robust scheme for least squares support vector regression (LS-SVR), termed as RLS-SVR, which employs non-convex least squares loss function to overcome the limitation of LS-SVR that it is sensitive to outliers. Non-convex loss gives a constant penalty for any large outliers. The proposed loss function can be expressed by a difference of convex functions (DC). The resultant optimization is a DC program. It can be solved by utilizing the Concave–Convex Procedure (CCCP). RLS-SVR iteratively builds the regression function by solving a set of linear equations at one time. The proposed RLS-SVR includes the classical LS-SVR as its special case. Numerical experiments on both artificial datasets and benchmark datasets confirm the promising results of the proposed algorithm.
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DOI:
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发表时间:
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期刊:
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影响因子:
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影响因子:
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DOI:
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期刊:
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影响因子:
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