ECG arrhythmia recognition via a neuro-SVM-KNN hybrid classifier with virtual QRS image-based geometrical features. - Mohammad Reza Homaeinezhad; Seyyed Abbas Atyabi; E. Tavakkoli; Hamid Najjaran Toosi; Ali Ghaffari; Reza Ebrahimpour (Expert Syst. Appl., 2012)