Srivastava Satwik, Mishra Deepak
Department of Mathematics, Indian Institute of Technology Jodhpur, Jodhpur, India.
Department of Computer Science and Engineering, Indian Institute of Technology Jodhpur, Jodhpur, India.
Sci Rep. 2023 Dec 11;13(1):21903. doi: 10.1038/s41598-023-49185-z.
Classification tasks today, especially for the medical domain, use datasets which are often hierarchical. These tasks are approached using methods that consider the class taxonomy for predicting a label. The classifiers are gradually becoming increasingly accurate over the complex datasets. While increasing accuracy is a good way to judge a model, in high-risk applications, it needs to be ensured that even if the model makes a mistake, it does not bear a severe consequence. This work explores the concept of severity of an error and extends it to the medical domain. Further, it aims to point out that accuracy or AUROC alone are not sufficient metrics to decide the performance of a model in a setting where a misclassification will incur a severe cost. Various approaches to reduce severity for classification models are compared and evaluated in this work, which indicate that while many of them might be suited for a traditional image classification setting, there is a need for techniques tailored toward tasks and settings of medical domain to push artificial intelligence in healthcare to a deployable state.
如今的分类任务,尤其是医学领域的分类任务,使用的数据集通常是分层的。这些任务采用考虑类分类法来预测标签的方法进行处理。在复杂数据集上,分类器的准确性正逐渐提高。虽然提高准确性是评判模型的一个好方法,但在高风险应用中,需要确保即使模型出错,也不会带来严重后果。这项工作探索了错误严重性的概念,并将其扩展到医学领域。此外,它旨在指出,在错误分类会导致严重代价的情况下,仅靠准确性或曲线下面积(AUROC)不足以决定模型的性能。这项工作对降低分类模型严重性的各种方法进行了比较和评估,结果表明,虽然其中许多方法可能适用于传统的图像分类场景,但需要针对医学领域的任务和场景量身定制技术,以便将医疗保健领域的人工智能推向可部署状态。
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