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arXiv 2408.09635cs.LGcs.AIq-bio.GN
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基于增强基因表达谱的元学习用于增强肺癌检测

Meta-Learning on Augmented Gene Expression Profiles for Enhanced Lung Cancer Detection

University of Kansas(堪萨斯大学)

Arya Hadizadeh Moghaddam, Mohsen Nayebi Kerdabadi, Cuncong Zhong, Zijun Yao

AI总结:

针对基因表达谱样本量少难以支撑复杂模型训练的问题,提出基于元学习的肺癌预测方法,利用多源增强数据优化模型,性能优于单数据集基线及迁移学习方案,并补充了可解释性分析。

摘要:

通过DNA微阵列获取的基因表达谱已被证实能够成功为癌症检测分类器提供关键信息。然而,这些数据集中的样本数量有限,给采用深度神经网络等复杂方法开展精细化分析带来了挑战。为解决这一“小数据”困境,元学习被引入作为解决方案,它通过利用相似数据集优化机器学习模型的训练过程,从而无需充足样本即可更快适应目标数据集。本研究提出了一种基于元学习的方法,用于从基因表达谱中预测肺癌。我们将该框架应用于成熟的深度学习方法,并采用四个不同的数据集开展元学习任务,其中一个作为目标数据集,其余作为源数据集。我们将该方法与传统方法及深度学习方法进行了对比评估,结果表明,在增强源数据上训练的元学习方法,其性能优于在单一数据集上训练的基线模型。此外,我们还对元学习与迁移学习方法进行了对比分析,凸显了所提方法在应对样本量有限相关挑战方面的高效性。最后,我们开展了可解释性研究,以阐明元学习所做决策的独特性。

英文摘要:

Gene expression profiles obtained through DNA microarray have proven successful in providing critical information for cancer detection classifiers. However, the limited number of samples in these datasets poses a challenge to employ complex methodologies such as deep neural networks for sophisticated analysis. To address this "small data" dilemma, Meta-Learning has been introduced as a solution to enhance the optimization of machine learning models by utilizing similar datasets, thereby facilitating a quicker adaptation to target datasets without the requirement of sufficient samples. In this study, we present a meta-learning-based approach for predicting lung cancer from gene expression profiles. We apply this framework to well-established deep learning methodologies and employ four distinct datasets for the meta-learning tasks, where one as the target dataset and the rest as source datasets. Our approach is evaluated against both traditional and deep learning methodologies, and the results show the superior performance of meta-learning on augmented source data compared to the baselines trained on single datasets. Moreover, we conduct the comparative analysis between meta-learning and transfer learning methodologies to highlight the efficiency of the proposed approach in addressing the challenges associated with limited sample sizes. Finally, we incorporate the explainability study to illustrate the distinctiveness of decisions made by meta-learning.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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