Study of Parameter Decision for a Noise Rejection Method Using ICA for a Magnetocardiogram

Autor:	M. Yoshizawa, Y. Uchikawa, Koichiro Kobayashi, K. Oyamada
Rok vydání:	2010
Předmět:	Noise Transformation matrix Dimension (vector space) Magnetic noise Initial value problem Electrical and Electronic Engineering Condensed Matter Physics Instrumentation Independent component analysis Contraction (operator theory) Algorithm Electronic Optical and Magnetic Materials Mathematics
Zdroj:	Journal of the Magnetics Society of Japan. 34:146-150
ISSN:	1882-2932 1882-2924
DOI:	10.3379/msjmag.1002r0009
Popis:	We studied an environmental magnetic noise rejection method using independent component analysis (ICA) for a magnetocardiogram (MCG). In the ICA, when the SN ratio of the data is reduced, the accuracy of the noise rejection becomes low and it becomes difficult to reach a decision regarding the contraction dimension. In order to solve these problems, we examined the initial value of the transformation matrix W of the ICA. We proposed an initial value decision procedure for the transformation matrix W, and as a result the accuracy of the noise rejection was improved. Verification was carried out for MCGs with various SN ratios. It was shown that this method was effective for improving noise rejection.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b99e4e5267db6a9c89a41396d181f80e https://doi.org/10.3379/msjmag.1002r0009 Zobrazit plný text záznamu