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Noise robust automatic heartbeat classification system using support vector machine and conditional spectral moment

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Abstract

Heartbeat classification is central to the detection of the arrhythmia. For the effective heartbeat classification, the noise-robust features are very significant. In this work, we have proposed a noise-robust support vector machine (SVM) based heartbeat classifier. The proposed classifier utilizes a novel noise-robust morphological feature which is based on the conditional spectral moment (CSM) of the heartbeat. In addition to the proposed CSM feature, we have also employed the existing RR interval, the wavelets, and the higher-order statistics (HOS) based temporal and morphological feature sets. The noise-robustness test of the proposed CSM and all the studied feature sets is performed for the SVM based heartbeat classifier. Further, we have studied the significance of combining these temporal and morphological features on the final classification performance. For this purpose, the individual SVMs were trained for each of the feature set. The final classification is based on the ensemble of these individual SVMs. Various combining scheme such as sum, majority, and product rules are employed to ensemble the result of the individually trained SVMs. The experimental results show the noise-robustness of the proposed CSM feature. The proposed classifier gives improved overall performance compared to the existing heartbeat classification systems.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, National Institute of Technology, Tadepalligudem, Andhra Pradesh, 534101, India

    Pratik Singh

  2. Department of Electronics and Communication Engineering, National Institute of Technology, Patna, 800005, India

    Gayadhar Pradhan

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  1. Pratik Singh
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  2. Gayadhar Pradhan
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Correspondence to Pratik Singh.

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Singh, P., Pradhan, G. Noise robust automatic heartbeat classification system using support vector machine and conditional spectral moment. Phys Eng Sci Med 43, 1387–1398 (2020). https://doi.org/10.1007/s13246-020-00947-3

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