研究生: |
張致翔 Jhih-Siang Jhang |
---|---|
論文名稱: |
基於分數低階估計之心律不整訊號建模與辨識 Cardiac Arrhythmia Signal Modeling and Recognizing Based on Fractional Low Order Estimation |
指導教授: |
林敬舜
Ching-Shun Lin |
口試委員: |
陳維美
Wei-Mei Chen 林昌鴻 Chang-Hong Lin 王煥宗 Huan-Chun Wang 林敬舜 Ching-Shun Lin |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電子工程系 Department of Electronic and Computer Engineering |
論文出版年: | 2017 |
畢業學年度: | 105 |
語文別: | 中文 |
論文頁數: | 67 |
中文關鍵詞: | 心電圖 、Alpha穩定分佈 、分數低階統計 、心房顫動 、心房撲動 、心室過速 、心室撲動 、心室顫動 、支持向量機 、最近鄰居法 、多層感知機 、卷積神經網路 、遞歸神經網路 、堆疊自編碼器 、交叉驗證法 |
外文關鍵詞: | Electrocardiogram, Alpha-stable distribution, Fractional low order statistics, Atrial fibrillation, Atrial flutter, Ventricular tachycardia, Ventricular flutter, Ventricular fibrillation, Support vector machine, K-nearest neighbor, Multilayer perceptron, Convolutional neural network, Recurrent neural network, Stacked autoencoders, K-fold cross-validation |
相關次數: | 點閱:748 下載:0 |
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長久以來心律不整檢測和分類都是心電圖訊號處理的主要議題。在此研究中,我們開發出一種針對多類型心律不整的辨識系統,包含心房顫動、心房撲動、以及具有生命危險的心室過速、心室撲動與心室顫動。此心電圖訊號辨識系統可分為不同的特徵提取技術與分類器的應用。在Alpha穩定分佈中的高斯分佈與心律不整有相似的性質,像是尖銳的峰值與脈衝特性,相較於一般的訊號分佈有較好的預期結果。此外帶有心律不整的心電圖訊號在時域上看起來混亂且難以解讀,利用機率密度函數與累加分佈函數進行統計分析,將會是一個更具有潛力的辨識特徵方法,因此本論文提出一種基於Alpha穩定分佈估計心律不整訊號參數的新方法。由於心律不整具有多種不同的形式,我們基於多種機器學習演算法中的分類器來驗證此方法的可行性。本論文提出的系統架構能夠分類不同的心律不整疾病,並證明使用Alpha穩定分佈足以區分心電圖訊號的主要特徵。
Electrocardiogram (ECG) has been used as the media for detecting and recognizing cardiac arrhythmias. In this research, we develop a recognition system for a variety of arrhythmias such as atrial fibrillation (AFIB), atrial flutter (AFL), and life threatening ventricular tachycardia (VT), ventricular flutter (VFL), and ventricular fibrillation (VFIB). This ECG recognition system is developed based on several feature extraction techniques followed by neural network classifiers. Alpha-stable distribution, with a general form of Gaussian distribution, shares the same properties with various arrhythmias such as sharp spikes or occasional impulses of outlying observations than one would expect from normally distributed signals. Since some electrocardiograms with arrhythmias are chaotic and difficult to be modeled in the time domain, interpreting the syndromes with their statistical information would be an alternative for exploring underlying characteristics. In addressing this problem, a novel method of accurate parameter estimation of cardiac signal is proposed. In addition, based on various arrhythmia types, various classifiers with deep learning algorithms are designed to verify the usefulness of our approaches. The developed system has shown the potential for alpha stable distribution to distinguish the main features of the ECG signal and thereby enhance the classification scheme.
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