ECG arrhythmia recognition via a neuro-SVM-KNN hybrid classifier with virtual QRS image-based geometrical features

  • Authors:
  • M. R. Homaeinezhad;S. A. Atyabi;E. Tavakkoli;H. N. Toosi;A. Ghaffari;R. Ebrahimpour

  • Affiliations:
  • Department of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran and Cardio Vascular Research Group (CVRG), K.N. Toosi University of Technology, Tehran, Iran;Cardio Vascular Research Group (CVRG), K.N. Toosi University of Technology, Tehran, Iran and Department of Mechatronic Engineering, Islamic Azad University, South Tehran Branch, Iran and Young Res ...;Department of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran and Cardio Vascular Research Group (CVRG), K.N. Toosi University of Technology, Tehran, Iran;Department of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran and Cardio Vascular Research Group (CVRG), K.N. Toosi University of Technology, Tehran, Iran;Department of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran and Cardio Vascular Research Group (CVRG), K.N. Toosi University of Technology, Tehran, Iran and Department ...;Department of Cognitive Sciences, Institute for Studies in Theoretical Physics and Mathematics (IPM), Tehran, Iran

  • Venue:
  • Expert Systems with Applications: An International Journal
  • Year:
  • 2012

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Abstract

In this study, a new supervised noise-artifact-robust heart arrhythmia fusion classification solution, is introduced. Proposed method consists of structurally diverse classifiers with a new QRS complex geometrical feature extraction technique. Toward this objective, first, the events of the electrocardiogram (ECG) signal are detected and delineated using a robust wavelet-based algorithm. Then, each QRS region and also its corresponding discrete wavelet transform (DWT) are supposed as virtual images and each of them is divided into eight polar sectors. Next, the curve length of each excerpted segment is calculated and is used as the element of the feature space. Discrimination power of proposed classifier in isolation of different Gold standard beats was assessed with accuracy 98.20%. Also, proposed learning machine was applied to 7 arrhythmias belonging to 15 different records and accuracy 98.06% was achieved. Comparisons with peer-reviewed studies prove a marginal progress in computerized heart arrhythmia recognition technologies.