Home Mathematics 7. Automatic analysis of cardiovascular diseases using EMD and support vector machines
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7. Automatic analysis of cardiovascular diseases using EMD and support vector machines

  • Sweta Kumari and Sneha Kumari

Abstract

There has been a significant growth in the global mortalities due to cardiac diseases. Electrocardiography (ECG) is a low-cost, efficient, and noninvasive tool widely used to study the cardiac status. It behaves as a non-linear and non-stationary characteristic due to which it is difficult to analyze them with a naked eye. Therefore, the cardiac healthcare demands an automated tool to analyze long-term heartbeat records. In literature, a vast majority of methodologies are reported to perform analysis on the ECG, however, they fail to provide a complete solution to this challenge. This chapter employs Hilbert-Huang transform (HHT) for feature selection, which is demonstrated as an effective technique as such it is capable to provide frequency spectrum varying with time. As a result, the output coefficients are used to extract different features such as weighted mean frequency, skewness, central moment, and many more processed from the intrinsic mode functions extricated utilizing the empirical mode decomposition (EMD) calculation. These features extracted are applied to support vector machine (SVM) model for identification into subsequent classes of ECG signals. The validation of proposed methodology is performed on the Physionet data to identify six categories of heartbeats. The methodology reported a higher accuracy of 99.18% in comparison with previous methodologies reported. The methodology can be utilized as a solution for computerized diagnosis of cardiac diseases to serve the cardiac healthcare.

Abstract

There has been a significant growth in the global mortalities due to cardiac diseases. Electrocardiography (ECG) is a low-cost, efficient, and noninvasive tool widely used to study the cardiac status. It behaves as a non-linear and non-stationary characteristic due to which it is difficult to analyze them with a naked eye. Therefore, the cardiac healthcare demands an automated tool to analyze long-term heartbeat records. In literature, a vast majority of methodologies are reported to perform analysis on the ECG, however, they fail to provide a complete solution to this challenge. This chapter employs Hilbert-Huang transform (HHT) for feature selection, which is demonstrated as an effective technique as such it is capable to provide frequency spectrum varying with time. As a result, the output coefficients are used to extract different features such as weighted mean frequency, skewness, central moment, and many more processed from the intrinsic mode functions extricated utilizing the empirical mode decomposition (EMD) calculation. These features extracted are applied to support vector machine (SVM) model for identification into subsequent classes of ECG signals. The validation of proposed methodology is performed on the Physionet data to identify six categories of heartbeats. The methodology reported a higher accuracy of 99.18% in comparison with previous methodologies reported. The methodology can be utilized as a solution for computerized diagnosis of cardiac diseases to serve the cardiac healthcare.

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