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Erschienen in:
2017 | OriginalPaper | Buchkapitel
Research of Rectal Pressure Signal Preprocessing Based on Improved FastICA Algorithm
verfasst von : Peng Zan, Yankai Liu, Suqin Zhang, Chundong Zhang, Hua Wang, Zhiyuan Gao
Erschienen in: Advanced Computational Methods in Life System Modeling and Simulation
Verlag: Springer Singapore
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Abstract
In view of some shortcomings of the existing rectal function diagnosis method, we propose that use the artificial anal sphincter system to collect the human rectal pressure signal, and then achieve the diagnosis of human rectal status through the rectal function diagnosis model. Since the collected signal is not pure rectal pressure signal, the single-dimensional pressure signal is extended to a multidimensional time series by phase space reconstruction. And then preprocessing of the reconstructed signal is carried out by the improved fifteenth order Newton iteration Fast ICA algorithm. The improved algorithm is simulated and the better separation effect is realized, proving the feasibility of the algorithm.