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参考独立分量的正则化方法
引用本文:李昌利,廖桂生. 参考独立分量的正则化方法[J]. 计算机工程与应用, 2009, 45(10): 138-140. DOI: 10.3778/j.issn.1002-8331.2009.10.041
作者姓名:李昌利  廖桂生
作者单位:西安电子科技大学,雷达信号处理国家重点实验室,西安,710071;广东海洋大学,信息学院,广东,湛江,524088;西安电子科技大学,雷达信号处理国家重点实验室,西安,710071
摘    要:参考独立分量分析(ICA with Reference,ICA-R)充分利用先验知识或参考信号,取得了很好的分离效果,但其中的阈值参数很难选取,且计算量很大。理论分析和实验表明,若阈值选取不当,算法甚至不收敛。通过在FastICA算法的负熵对比度函数中引入ICA-R算法中的接近性度量函数作为正则化项,得到一个简单的改进算法。针对合成数据和实际的ECG数据的仿真实验表明,算法收敛快、提取效果好,同时正则化参数取值非常灵活。

关 键 词:盲源分离  独立分量分析  盲源提取  参考独立分量分析  正则化
收稿时间:2008-11-17
修稿时间:2008-12-19 

Regularization method for ICA with reference
LI Chang-li,LIAO Gui-sheng. Regularization method for ICA with reference[J]. Computer Engineering and Applications, 2009, 45(10): 138-140. DOI: 10.3778/j.issn.1002-8331.2009.10.041
Authors:LI Chang-li  LIAO Gui-sheng
Affiliation:1.National Key Lab for Radar Signal Processing,Xidian University,Xi’an 710071,China 2.School of Information Engineering,Guangdong Ocean University,Zhanjiang,Guangdong 524088,China
Abstract:Independent Component Analysis with Reference(ICA-R) utilizes a priori information or reference signal and achieves good separation results,but its threshold parameter is very hard to determine and its computation load is very great.Theoretic analysis and experiments shows ICA-R even can't converge if the threshold is improperly selected.By inserting the closeness measure function of ICA-R as a regularization term into the usual negentropy contrast function for FastICA,a very simple improved algorithm is pr...
Keywords:Blind Source Separation(BSS)  Independent Component Analysis(ICA)  Blind Source Extraction(BSE)  Independent Component Analysis with Reference(ICA-R)  regularization
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