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PDNet: A Convolutional Neural Network Has Potential to be Deployed on Small Intelligent Devices for Arrhythmia Diagnosis

Fei Yang1,2,#, Xiaoqing Zhang1,*,#, Yong Zhu3
1 Department of Computer Science and Engineering, Southern University of Science and Technology, Shenzhen, China
2 Cooperative Innovtion Center of Internet Healthcare, Zhengzhou University, Zhengzhou, 450052, China
3 College of Computer Science and Technology, Huaqiao University, Xiamen, 361021, China
* Corresponding Author: Xiaoqing Zhang. Email:
# Fei Yang and Xiaoqing Zhang contributed equally to this work
(This article belongs to this Special Issue: Recent Advances on Deep Learning for Medical Signal Analysis (RADLMSA))

Computer Modeling in Engineering & Sciences 2020, 125(1), 365-382.

Received 21 March 2020; Accepted 20 July 2020; Issue published 18 September 2020


Heart arrhythmia is a group of irregular heartbeat conditions and is usually detected by electrocardiograms (ECG) signals. Over the past years, deep learning methods have been developed to classify different types of heart arrhythmias through ECG based on computer-aided diagnosis systems (CADs), but these deep learning methods usually cannot trade-off between classification performance and parameters of deep learning methods. To tackle this problem, this work proposes a convolutional neural network (CNN) model named PDNet to recognize different types of heart arrhythmias efficiently. In the PDNet, a convolutional block named PDblock is devised, which is comprised of a pointwise convolutional layer and a depthwise convolutional layer. Furthermore, an improved loss function is utilized to improve the results of heart arrhythmias classification. To verify the proposed CNN model, extensive experiments are conducted on public MIT-BIH ECG databases. The experimental results demonstrate that the proposed PDNet achieves an accuracy of 98.2% accuracy and outperforms state-of-the-art methods about 2%.


Electrocardiograms; heart arrhythmia; convolutional neural network; PDblock; loss

Cite This Article

Yang, F., Zhang, X., Zhu, Y. (2020). PDNet: A Convolutional Neural Network Has Potential to be Deployed on Small Intelligent Devices for Arrhythmia Diagnosis. CMES-Computer Modeling in Engineering & Sciences, 125(1), 365–382.


This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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