[1]刘冰,李瑞麟,封举富.深度度量学习综述[J].智能系统学报,2019,14(6):1064-1072.[doi:10.11992/tis.201906045]
LIU Bing,LI Ruilin,FENG Jufu.A brief introduction to deep metric learning[J].CAAI Transactions on Intelligent Systems,2019,14(6):1064-1072.[doi:10.11992/tis.201906045]
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《智能系统学报》[ISSN 1673-4785/CN 23-1538/TP] 卷:
14
期数:
2019年第6期
页码:
1064-1072
栏目:
综述
出版日期:
2019-11-05
- Title:
-
A brief introduction to deep metric learning
- 作者:
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刘冰1,2, 李瑞麟1,2, 封举富1,2
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1. 北京大学 信息科学技术学院, 北京 100871;
2. 北京大学 机器感知与智能教育部重点实验室, 北京 100871
- Author(s):
-
LIU Bing1,2, LI Ruilin1,2, FENG Jufu1,2
-
1. School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China;
2. Key Laboratory of Machine Perception (MOE), Peking University, Beijing 100871, China
-
- 关键词:
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深度度量学习; 深度学习; 机器学习; 对比损失; 三元组损失; 代理损失; softmax分类; 温度值
- Keywords:
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deep metric learning; deep learning; machine learning; contrastive loss; triplet loss; proxy loss; softmax classification; temperature
- 分类号:
-
TP181
- DOI:
-
10.11992/tis.201906045
- 摘要:
-
深度度量学习已成为近年来机器学习最具吸引力的研究领域之一,如何有效的度量物体间的相似性成为问题的关键。现有的依赖成对或成三元组的损失函数,由于正负样本可组合的数量极多,因此一种合理的解决方案是仅对训练有意义的正负样本采样,也称为“难例挖掘”。为减轻挖掘有意义样本时的计算复杂度,代理损失设置了数量远远小于样本集合的代理点集。该综述按照时间顺序,总结了深度度量学习领域比较有代表性的算法,并探讨了其与softmax分类的联系,发现两条看似平行的研究思路,实则背后有着一致的思想。进而文章探索了许多致力于提升softmax判别性能的改进算法,并将其引入到度量学习中,从而进一步缩小类内距离、扩大类间距,提高算法的判别性能。
- Abstract:
-
Recently, deep metric learning (DML) has become one of the most attractive research areas in machine learning. Learning an effective deep metric to measure the similarity between subjects is a key problem. As to existing loss functions that rely on pairwise or triplet-wise, as training data increases, and since the number of positive and negative samples that can be combined is extremely large, a reasonable solution is to sample only positive and negative samples that are meaningful for training, also known as Difficult Case Mining. To alleviate computational complexity of mining meaningful samples, the proxy loss chooses proxy sets that are much smaller than the sample sets. This review summarizes some algorithms representative of DML, according to the time order, and discusses their relationship with softmax classification. It was found that these two seemingly parallel research methods have a consistent idea behind them. This paper explores some improved algorithms that aim to improve the softmax discriminative performance, and introduces them into metric learning, so as to further reduce intra-class distance, expand inter-class distance, and, finally, improve the discriminant performance of the algorithm.
备注/Memo
收稿日期:2019-06-24。
基金项目:国家自然科学基金重点项目(61333015).
作者简介:刘冰,女,1994年生,博士研究生,主要研究方向为深度学习、计算机视觉和生物特征识别;李瑞麟,男,1995年生,硕士研究生,主要研究方向为深度学习、计算机视觉和生物特征识别;封举富,男,1967年生,教授,博士生导师,主要研究方向为图像处理、模式识别、机器学习和生物特征识别。主持和参与国家自然科学基金、"十一五"国家科技支撑计划课题、973计划等项目多项。曾获中国高校科技二等奖、第一届亚洲计算机视觉国际会议优秀论文奖、北京大学安泰教师奖、北京大学大众电脑优秀奖、北京大学安泰项目奖等奖励多项。发表学术论文300余篇。
通讯作者:封举富.E-mail:fjf@cis.pku.edu.cn
更新日期/Last Update:
2019-12-25