A hybrid acceleration strategy for nonparallel support vector machine
A hybrid acceleration strategy for nonparallel support vector machine
复制标题
非并行支持向量机的混合加速策略
DOI:
10.1016/j.ins.2020.08.067
复制
发表时间:
2021-02
期刊:
影响因子:
--
通讯作者:
Pang Xinying
中科院分区:
文献类型:
--
作者:
Wu Weichen;Xu Yiitan;Pang Xinying
Nonparallel support vector machine is a binary classifier which has better sparsity and classification performance than other support vector machine models. However, it works slowly. Although sample selection is an effective acceleration approach, it will disturb the accuracy. Fortunately, another recently emerging screening method could speedup the solving process and keeps the accuracy unchanged. Motivated by the above research, a novel two-stage hybrid screening rule based on variational inequality and duality gap is proposed in this paper. It can reduce the scale of dual problem by deleting more redundant samples. Then, a better acceleration effect will be obtained. Meanwhile, it is still a safe method which means that the optimal solution remains unchanged. Moreover, Shrinking technique is embedded into the fast iterative algorithm DCDM to get further speedup. Thus the hybrid method can reduce the size of the problem, and accelerate the solving process greatly. Numerical experiments on ten benchmark data sets and a real Chinese red wine data set are conducted to verify the effectiveness of our hybrid acceleration strategy.
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