title: A new method for approximation of physiological signals.
abstract: A new robust method for the approximation of physiological signals is proposed. The noise must satisfy only one condition: that the probabilities for positive and negative values are equal. Our results illustrate that the proposed method provides a more accurate approximation of signals than either the least square error or the least absolute deviation method in cases that include unknown noise density.
mesh_terms: D016477:Artifacts; D015982:Bias; D016018:Least-Squares Analysis; D015233:Models, Statistical; D016011:Normal Distribution; D011336:Probability; D012815:Signal Processing, Computer-Assisted