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Semi-supervised learning approaches to class assignment in ambiguous microstructures
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DOI：10.1016/j.actamat.2020.01.046.png)
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摘要
En 中文
Uncovering links between processing conditions, microstructure, and properties is a central tenet of materials analysis. It is well known that microstructure determines properties, but expressing these structural features in a universal quantitative fashion has proved to be extremely difficult. Recent efforts have focused on training supervised learning algorithms to place microstructure images into predefined classes, but this approach assumes a level of a priori knowledge that may not always be available. In this paper, we expand this idea to the semi-supervised context in which class labels are known with confidence for only a fraction of the microstructures that represent the material system. It is shown that classifiers which perform well on both the high-confidence labeled data and the unlabeled, ambiguous data can be constructed by relying on the labeling consensus of a collection of semi-supervised learning methods. We also demonstrate the use of novel error estimation approaches for unlabeled data to establish robust confidence bounds on the classification performance over the entire microstructure space. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Keyword:
Machine learning
Microstructure classification
Support vector machines
Semi-supervised learning methods
Unsupervised error estimation
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期刊
IF:
9.3
论文数:
2.0W
被引数:
12.9W
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