ARMA estimation – a comparison study for fMRI
نویسندگان
چکیده
The paper investigates the effectiveness of four projection methods of finite response function (FIR) to infinite response function (IIR) filters. This is done in the scope of a linear physiological model developed for functional Magnetic Resonance Imaging (fMRI). Of the four methods the Steiglitz-Mcbride algorithm provided the best fit. A new method is also proposed where a regularization term is used to keep the poles of the IIR filter inside the unit circle in order to make it stable. Preliminary results are promising.
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