时变特性的人脑超网络构建方法及其分类
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TP399

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国家自然科学基金项目(面上项目,重点项目,重大项目)


Construction Method and Classification of Human Brain Hyper-network with Time-varying Characteristics
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The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

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    摘要:

    脑网络已在神经成像领域内得到广泛的应用。近年来,高阶功能连接网络和超网络在脑疾病诊断方面取得了较大的进步。然而,两种网络均存在相应的问题:高阶功能连接网络虽然考虑了网络的时变特性,但并不能处理网络中的空间多元交互问题;而超网络虽然可以表征多个大脑区域之间的相互关系,但并未考虑网络的动态特性。为了解决以上问题,本文融合了高阶功能连接网络和超网络的特性,提出一种具有时变特性的脑功能超网络的构建方法。该方法在考虑到脑网络时间动态性的基础上,基于LASSO方法进行脑功能超网络构建,并将该网络应用至脑疾病诊断中。该网络消除了上述两个网络的弊端,结果表明,该方法的分类准确率达到86.36%,显著高于之前所提出的方法,能有效提高抑郁症的分类表现,具有重要的理论意义和临床价值。

    Abstract:

    Brain networks have been widely used in the field of neuroimaging. In recent years, high order functional connection networks and hypernetworks have made great strides in brain diseases diagnosis. However, both types of networks have their owe disadvantages: high order functional connectivity networks consider the time varying characteristic of the network but does not deal with the problem of special multiple interactions in the network; hypernetworks can characterize relationship between multiple brain regions but the dynamic characteristics of the network are not accounted for. To slove the above problems, the characteristics of high order functional connection networks and hypernetworks was integrated, and a method for constructing brain function hypernetworks with time-varying characteristics was proposed. This method takes into account the time dynamics of the brain network, and builds the brain function hypernetwork based on the LASSO method, and applies the network to the brain diseases diagnosis. This network canceled out the disadvantages of the above two networks, and the results show that the classification accuracy of this method reaches 86.36%, which is significantly higher than the previously proposed method. It can effectively improve the classification performance of depression and has important theoretical significance and clinical value.

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引用本文

刘永艳,闻敏,李瑶,等. 时变特性的人脑超网络构建方法及其分类[J]. 科学技术与工程, 2022, 22(1): 296-303.
Liu Yongyan, Wen Min, Li Yao, et al. Construction Method and Classification of Human Brain Hyper-network with Time-varying Characteristics[J]. Science Technology and Engineering,2022,22(1):296-303.

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历史
  • 收稿日期:2021-08-07
  • 最后修改日期:2021-10-21
  • 录用日期:2021-08-30
  • 在线发布日期: 2022-01-11
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