کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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562661 | 875425 | 2012 | 10 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A combination of parallel factor and independent component analysis A combination of parallel factor and independent component analysis](/preview/png/562661.png)
Although CPA (canonical/parallel factor analysis) has a unique solution, the actual computation can be made more robust by incorporating extra constraints. In several applications, the factors in one mode are known to be statistically independent. On the other hand, in Independent Component Analysis (ICA), it often makes sense to impose a Khatri-Rao structure on the mixing vectors. In this paper, we propose a new algorithm to impose independence constraints in CPA. Our algorithm implements the algebraic CPA structure and the property of statistical independence simultaneously. Numerical experiments show that our method outperforms in several cases pure CPA, pure ICA, and tensor ICA, a previously proposed method for combining ICA and CPA. We also present a strategy for imposing full or partial symmetry in CPA.
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► A new and improved algorithm for ICA–CPA is proposed.
► Situations in which the algorithm outperforms ICA and CPA alone are explored.
► A way to take symmetry into account in CPA estimating is proposed.
Journal: Signal Processing - Volume 92, Issue 12, December 2012, Pages 2990–2999