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Symmetric Orthogonal Tensor Decomposition is Trivial

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 نشر من قبل Tamara Kolda
 تاريخ النشر 2015
  مجال البحث الهندسة المعلوماتية
والبحث باللغة English
 تأليف Tamara G. Kolda




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We consider the problem of decomposing a real-valued symmetric tensor as the sum of outer products of real-valued, pairwise orthogonal vectors. Such decompositions do not generally exist, but we show that some symmetric tensor decomposition problems can be converted to orthogonal problems following the whitening procedure proposed by Anandkumar et al. (2012). If an orthogonal decomposition of an $m$-way $n$-dimensional symmetric tensor exists, we propose a novel method to compute it that reduces to an $n times n$ symmetric matrix eigenproblem. We provide numerical results demonstrating the effectiveness of the method.



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