An efficient online active learning algorithm for binary classification
An efficient online active learning algorithm for binary classification
复制标题
一种高效的二元分类在线主动学习算法
DOI:
10.1016/j.patrec.2015.08.010
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发表时间:
2015-12
影响因子:
5.1
通讯作者:
Zheng Qinghua
中科院分区:
文献类型:
--
作者:
Liu Dehua;Zhang Peng;Zheng Qinghua
Active learning is an important class of machine learning where labels are queried when necessary. Most active learning algorithms need to iteratively retrain the classifier when new labeled data are obtained. Such a batch learning process can incur a high overhead in both time and memory. In this paper, we propose a new online active learning algorithm for binary classification. Our algorithm uses the margin-based criterion, which compares the margin of instances with a threshold to decide whether it should be queried. Especially, we propose Iteratively Decreased Threshold (IDT), a new threshold update method for the margin-based criterion. By iteratively decreasing the threshold with IDT, our algorithm can effectively reduce the number of queried instances. In addition, as evaluating the margin-based criterion involves only simple inner productions, our algorithm is also very efficient to evaluate. We compare our algorithm with other state-of-the-art online active learning algorithms on six data sets, demonstrating that it requires less queries to achieve the same classification accuracy, and incurs a smaller computation overhead at the same time.
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DOI:
10.1145/1143844.1143853
发表时间:
2006-06
期刊:
Proceedings of the 23rd international conference on Machine learning
影响因子:
--
作者:
Maria-Florina Balcan;A. Beygelzimer;J. Langford
通讯作者:
Maria-Florina Balcan;A. Beygelzimer;J. Langford
DOI:
10.1145/1553374.1553390
发表时间:
2009-06
期刊:
--
影响因子:
--
作者:
N. Cesa-Bianchi;C. Gentile;Francesco Orabona
通讯作者:
N. Cesa-Bianchi;C. Gentile;Francesco Orabona
DOI:
10.1109/tpami.2007.70811
发表时间:
2008-09-01
影响因子:
23.6
作者:
Ho, Shen-Shyang;Wechsler, Harry
通讯作者:
Wechsler, Harry
DOI:
10.1145/2020408.2020444
发表时间:
2011-08
期刊:
--
影响因子:
--
作者:
Wei Chu;Martin A. Zinkevich;Lihong Li;A. Thomas;Belle L. Tseng
通讯作者:
Wei Chu;Martin A. Zinkevich;Lihong Li;A. Thomas;Belle L. Tseng
DOI:
10.1007/978-1-4419-1428-6_489
发表时间:
2012-07
期刊:
--
影响因子:
--
作者:
Burr Settles
通讯作者:
Burr Settles