An exploration of how training set composition bias in machine learning affects identifying rare objects
An exploration of how training set composition bias in machine learning affects identifying rare objects
复制标题
探索机器学习中的训练集组成偏差如何影响稀有物体的识别
DOI:
10.1016/j.ascom.2022.100617
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发表时间:
2022-07
影响因子:
2.5
通讯作者:
Tsai Chao-Wei
中科院分区:
文献类型:
--
作者:
Lake Sean E.;Tsai Chao-Wei
When training a machine learning classifier on data where one of the classes is intrinsically rare, the classifier will often assign too few sources to the rare class. To address this, it is common to up-weight the examples of the rare class to ensure it isn't ignored. It is also a frequent practice to train on restricted data where the balance of source types is closer to equal for the same reason. Here we show that these practices can bias the model toward over-assigning sources to the rare class. We also explore how to detect when training data bias has had a statistically significant impact on the trained model's predictions, and how to reduce the bias's impact. While the magnitude of the impact of the techniques developed here will vary with the details of the application, for most cases it should be modest. They are, however, universally applicable to every time a machine learning classification model is used, making them analogous to Bessel's correction to the sample variance.
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DOI:
10.1111/j.1365-2966.2007.12040.x
发表时间:
2006-04
影响因子:
4.8
作者:
A. Lawrence;S. Warren;O. Almaini;A. Edge;N. Hambly;R. Jameson;P. Lucas;M. Casali;A. Adamson
通讯作者:
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DOI:
10.1088/0004-6256/143/1/7
发表时间:
2011-11
期刊:
The Astronomical Journal
影响因子:
--
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S. Lake;E. L. Wright;S. Petty;R. Assef;T. Jarrett;S. Stanford;D. Stern;C. Tsai
DOI:
10.1007/978-3-662-44185-5_5314
发表时间:
2021-12
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Encyclopedia of Astrobiology
影响因子:
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作者:
J. Wagg;I. Jiménez-Serra;Tyler Bourke;Robert Braun;Phil Diamond;William Garnier;Jimi Green;
通讯作者:
J. Wagg;I. Jiménez-Serra;Tyler Bourke;Robert Braun;Phil Diamond;William Garnier;Jimi Green;
影响因子:
4.8
作者:
Petroff, E.;Keane, E. F.;Bhandari, S.
通讯作者:
Bhandari, S.