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Item Response Theory Based Ensemble in Machine Learning | |
Ziheng Chen; Hongshik Ahn | |
发表期刊 | International Journal of Automation and Computing |
ISSN | 1476-8186 |
2020 | |
卷号 | 17期号:5页码:621-636 |
摘要 | In this article, we propose a novel probabilistic framework to improve the accuracy of a weighted majority voting algorithm. In order to assign higher weights to the classifiers which can correctly classify hard-to-classify instances, we introduce the item response theory (IRT) framework to evaluate the samples′ difficulty and classifiers′ ability simultaneously. We assigned the weights to classifiers based on their abilities. Three models are created with different assumptions suitable for different cases. When making an inference, we keep a balance between the accuracy and complexity. In our experiment, all the base models are constructed by single trees via bootstrap. To explain the models, we illustrate how the IRT ensemble model constructs the classifying boundary. We also compare their performance with other widely used methods and show that our model performs well on 19 datasets. |
关键词 | Classification ensemble learning item response theory machine learning expectation maximization (EM) algorithm. |
DOI | 10.1007/s11633-020-1239-y |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ia.ac.cn/handle/173211/42263 |
专题 | 学术期刊_Machine Intelligence Research |
作者单位 | Department of Applied Mathematics and Statistics, Stony Brook University, New York 11794−3600, USA |
推荐引用方式 GB/T 7714 | Ziheng Chen,Hongshik Ahn. Item Response Theory Based Ensemble in Machine Learning[J]. International Journal of Automation and Computing,2020,17(5):621-636. |
APA | Ziheng Chen,&Hongshik Ahn.(2020).Item Response Theory Based Ensemble in Machine Learning.International Journal of Automation and Computing,17(5),621-636. |
MLA | Ziheng Chen,et al."Item Response Theory Based Ensemble in Machine Learning".International Journal of Automation and Computing 17.5(2020):621-636. |
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