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arXiv 2107.13237eess.AScs.CVcs.SD
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基于视觉域迁移学习的心跳声分类方法

A Visual Domain Transfer Learning Approach for Heartbeat Sound Classification

Liverpool John Moores University(利物浦约翰摩尔斯大学);Purdue University(普渡大学)

Uddipan Mukherjee, Sidharth Pancholi

摘要:

心脏病是导致人类死亡的最常见原因,占全世界死亡人数的近三分之一。早期发现疾病可以增加患者的生存机会,并且有几种方法可以早期发现心脏病的迹象。本研究提出将净化和标准化的心音转换为视觉梅尔尺度谱图,然后使用视觉域迁移学习方法自动提取特征并在心音之间进行分类。先前的一些研究发现,各种类型的心音的频谱图是人眼视觉上可区分的,这促使本研究对用于自动心音分类的视觉域分类方法进行实验。它将使用基于卷积神经网络的架构,即ResNet,MobileNetV2等作为频谱图的自动特征提取器。这些在图像域中被广泛接受的模型显示出学习从具有不同幅度和噪声水平的不同环境中收集的心音的广义特征表示。使用的模型评估标准是分类准确性,精确度,召回率和AUROC,因为所选数据集是不平衡的。所提出的方法已在PASCAL心音集合的数据集A和B上实施,两组的分类准确度均达到约90%,AUROC均达到约0.97。

英文摘要:

Heart disease is the most common reason for human mortality that causes almost one-third of deaths throughout the world. Detecting the disease early increases the chances of survival of the patient and there are several ways a sign of heart disease can be detected early. This research proposes to convert cleansed and normalized heart sound into visual mel scale spectrograms and then using visual domain transfer learning approaches to automatically extract features and categorize between heart sounds. Some of the previous studies found that the spectrogram of various types of heart sounds is visually distinguishable to human eyes, which motivated this study to experiment on visual domain classification approaches for automated heart sound classification. It will use convolution neural network-based architectures i.e. ResNet, MobileNetV2, etc as the automated feature extractors from spectrograms. These well-accepted models in the image domain showed to learn generalized feature representations of cardiac sounds collected from different environments with varying amplitude and noise levels. Model evaluation criteria used were categorical accuracy, precision, recall, and AUROC as the chosen dataset is unbalanced. The proposed approach has been implemented on datasets A and B of the PASCAL heart sound collection and resulted in ~ 90% categorical accuracy and AUROC of ~0.97 for both sets.

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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