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Classification of electrocardiogram signals with waveform morphological analysis and support vector machines

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Abstract

Electrocardiogram (ECG) indicates the occurrence of various cardiac diseases, and the accurate classification of ECG signals is important for the automatic diagnosis of arrhythmia. This paper presents a novel classification method based on multiple features by combining waveform morphology and frequency domain statistical analysis, which offer improved classification accuracy and minimise the time spent for classifying signals. A wavelet packet is used to decompose a denoised ECG signal, and the singular value, maximum value, and standard deviation of the decomposed wavelet packet coefficients are calculated to obtain the frequency domain feature space. The slope threshold method is applied to detect R peak and calculate RR intervals, and the first two RR intervals are extracted as time-domain features. The fusion feature space is composed of time and frequency domain features. A combination of support vector machine (SVM) with the help of grid search and waveform morphological analysis is applied to complete nine types of ECG signal classification. Computer simulations show that the accuracy of the proposed algorithm on multiple types of arrhythmia databases can reach 96.67%.

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Data availability

The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

Hongqiang Li acknowledges the support from the Tianjin Talent Special Support Program. Juan Daniel Prades García acknowledges the support from the Serra Hunter Program, the ICREA Academia Program, and the Tianjin Distinguished University Professor Program.

Funding

This work was supported by the Tianjin Key Research and Development Program (No. 19YFZCSY00180), the Tianjin Major Project for Civil-Military Integration of Science and Technology (No. 18ZXJMTG00260), the Tianjin Science and Technology Program (No. 20YDTPJC01380), and the Tianjin Municipal Special Foundation for Key Cultivation of China (No. XB202007).

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Authors and Affiliations

  1. Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems, School of Electronics and Information Engineering, Tiangong University, Tianjin, China

    Hongqiang Li, Zhixuan An, Yuxin Mu, Wenchao Song & Quanhua Mao

  2. Textile Fiber Inspection Center, Tianjin Product Quality Inspection Technology Research Institute, Tianjin, China

    Shasha Zuo & Wei Zhu

  3. Tianjin Chest Hospital, Tianjin, China

    Lu Cao

  4. School of Computer Science and Technology, Tiangong University, Tianjin, China

    Zhen Zhang

  5. Centre for Medical Radiation Physics, University of Wollongong, Wollongong, Australia

    Enbang Li

  6. Institute of Nanoscience and Nanotechnology, University of Barcelona, 08028, Barcelona, Spain

    Juan Daniel Prades García

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  1. Hongqiang Li
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  2. Zhixuan An
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  3. Shasha Zuo
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  4. Wei Zhu
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  9. Zhen Zhang
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  10. Enbang Li
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  11. Juan Daniel Prades García
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Correspondence to Hongqiang Li.

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Li, H., An, Z., Zuo, S. et al. Classification of electrocardiogram signals with waveform morphological analysis and support vector machines. Med Biol Eng Comput 60, 109–119 (2022). https://doi.org/10.1007/s11517-021-02461-4

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  • DOI: https://doi.org/10.1007/s11517-021-02461-4

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