基于进化多目标优化的自步学习方法研究
首发时间:2017-04-27
摘要:自步学习是最近提出的一种新的机器学习技术。自步学习模仿了人的学习过程。人类在学习的时候总是从简单的概念学起,然后再慢慢地学习复杂的知识。同样地,自步学习首先学习简单的样本然后再慢慢地将复杂的样本引入到训练过程中。自步学习能够很好的避免模型陷入局部最优和能够取得较好的泛化性能。在本文中,我们首先介绍了自步学习的研究进展和自步学习的相关背景。然后,本文用进化多目标优化的方法来提升自步学习,从而来解决当前自步学习模型中存在的些许问题。基于进化多目标优化的自步学习方法将损失项和自步正则项当作两个目标同时优化并且能够获得一组非支配解。本文利用多目标优化里的选解工具来挑选出较为合适的解。最后,本文在合成孔径雷达变化检测上进行了实验,从而表明了方法的有效性。
关键词: 模式识别与智能系统 机器学习 自步学习 多目标优化 进化算法;变化检测
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Research on Self-paced Learning based on Evolutionary Multi-objective Optimization
Abstract:Self-paced learning (SPL) is a recently proposed machine learning method. SPL imitates the learning process of humans. Humans learn the easy concepts at first and then take more complex knowledge into consideration. Therefore, SPL learns the easy samples at first and then involves more complex ones into training. SPL is beneficial in avoiding bad local minima and in achieving a better generalization results. In this paper, we introduce the background and related researches of self-paced learning. Then we use evolutionary multi-objective optimization to improve self-paced learning for addressing the issues in the current SPL research. Self-paced learning based on evolutionary multi-objective optimization optimizes the loss function and the self-paced regularizer simultaneously and aims to get a set of nondominated solutions. We can use some off-the-shelf tools in multi-objective optimization to find the best trade-off between the two objectives. Experiments on change detection in synthetic aperture radar images demonstrates the effectiveness of the proposed method.
Keywords: Pattern analysis and intelligence system machine learning self-paced learning multi-objective optimization evolutionary algorithm change detection
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