title: A stacked contractive denoising auto-encoder for ECG signal denoising.
abstract: As a primary diagnostic tool for cardiac diseases, electrocardiogram (ECG) signals are often contaminated by various kinds of noise, such as baseline wander, electrode contact noise and motion artifacts. In this paper, we propose a contractive denoising technique to improve the performance of current denoising auto-encoders (DAEs) for ECG signal denoising. Based on the Frobenius norm of the Jacobean matrix for the learned features with respect to the input, we develop a stacked contractive denoising auto-encoder (CDAE) to build a deep neural network (DNN) for noise reduction, which can significantly improve the expression of ECG signals through multi-level feature extraction. The proposed method is evaluated on ECG signals from the bench-marker MIT-BIH Arrhythmia Database, and the noises come from the MIT-BIH noise stress test database. The experimental results show that the new CDAE algorithm performs better than the conventional ECG denoising method, specifically with more than 2.40 dB improvement in the signal-to-noise ratio (SNR) and nearly 0.075 to 0.350 improvements in the root mean square error (RMSE).
authors.affiliation: College of Electronic and Information Engineering, Yanshan University, Qinhuangdao, People's Republic of China.
authors.forename: Peng
authors.initials: P
authors.lastname: Xiong
authors.forename: Hongrui
authors.initials: H
authors.lastname: Wang
authors.forename: Ming
authors.initials: M
authors.lastname: Liu
authors.forename: Feng
authors.initials: F
authors.lastname: Lin
authors.forename: Zengguang
authors.initials: Z
authors.lastname: Hou
authors.forename: Xiuling
authors.initials: X
authors.lastname: Liu
mesh_terms: D001145:Arrhythmias, Cardiac / Q000175:diagnosis; D004562:Electrocardiography; D006801:Humans; D016571:Neural Networks, Computer; D012815:Signal Processing, Computer-Assisted; D059629:Signal-To-Noise Ratio