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arXiv 2102.00738cs.LG
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基于响应时间的阿尔茨海默病早期诊断分类

Classifications based on response times for detecting early-stage Alzheimer's disease

RS2M, Telecom-SudParis, Institut Mines-Télécom(RS2M、南巴黎电信学院、矿业电信研究所)

Alain Petrowski

摘要:

引言-本文主要描述了一种方法,以高精度检测早期阿尔茨海默病(ES-AD)患者与健康对照(HC)受试者,从手写和绘图任务记录建立的数据集。方法-所提出的方法使用主体的响应时间。首先用与网格搜索相关联的“支持向量机“(SVM)选择任务的最优子集。混合高斯分布的任务持续时间的空间中定义的,然后使用复制和解释的SVM的结果。最后,一个令人惊讶的简单和有效的ad hoc分类算法推导出的高斯混合。结果-本文中提出的解决方案比关于手写和绘图任务的分类HC/ES-AD的现有技术的最佳结果少两次甚至四次错误。讨论-最好的SVM学习模型达到了这种分类的高精度,但它的学习能力太大,无法确保数据集小的过拟合风险低。提出的adhoc分类算法只需要优化三个实参数。因此,它应该受益于良好的泛化能力。

英文摘要:

Introduction- This paper mainly describes a way to detect with high accuracy patients with early-stage Alzheimer's disease (ES-AD) versus healthy control (HC) subjects, from datasets built with handwriting and drawing task records. Method- The proposed approach uses subject's response times. An optimal subset of tasks is first selected with a "Support Vector Machine" (SVM) associated with a grid search. Mixtures of Gaussian distributions defined in the space of task durations are then used to reproduce and explain the results of the SVM. Finally, a surprisingly simple and efficient ad hoc classification algorithm is deduced from the Gaussian mixtures. Results- The solution presented in this paper makes two or even four times fewer errors than the best results of the state of the art concerning the classification HC/ES-AD from handwriting and drawing tasks. Discussion- The best SVM learning model reaches a high accuracy for this classification but its learning capacity is too large to ensure a low overfitting risk regarding the small size of the dataset. The proposed ad hoc classification algorithm only requires to optimize three real-parameters. It should therefore benefit from a good generalization ability.

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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