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科技與工程學院
電機工程學系
學位論文
學位論文
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http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/73890
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search.filters.author.Yueh-Yiing Yang
1
search.filters.author.楊岳穎
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search.filters.subject.心電圖
1
search.filters.subject.adaptive feature extraction
1
search.filters.subject.electrocardiogram (ECG)
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search.filters.subject.k-means clustering
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search.filters.subject.k-means分群法
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search.filters.subject.support vector machines (SVMs)
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以適應性特徵擷取及改進支持向量機檢測心電圖心律不整
(
2010
)
楊岳穎
;
Yueh-Yiing Yang
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心電圖(ECG)分析是檢測心律不整最好的方法之ㄧ,雖然已經有許多相關的演算法已經被提出,但是可靠性低的訊號特徵提取分析或歸納能力較低的辨識器使得系統的辨識率仍然不能達到要求。本論文提出適應性特徵擷取與改良的支持向量機(SVMs)的心電圖心律不整檢測系統。首先利用小波轉換係數及訊號之振幅或週期等參數作為系統的候選人,針對每一個分類器適應性的擷取出少數特定的特徵;而改良式支持向量機結合k-means分群法與一對一支持向量機,並且修改其投票機制,進一步提高了相似類別之間的辨識率。此心電圖心律不整檢測系統使用了超過100,000筆的MIT-BIH心律不整資料庫樣本進行測試,平均辨識率高達97.96%。
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