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Low-rank tensor recovery for Jacobian-based Volterra identification of parallel Wiener-Hammerstein systems

机译:基于Jacobian的Volterra识别并行Wiener-Hammerstein系统的低级张力恢复

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We consider the problem of identifying a parallel Wiener-Hammerstein structure from Volterra kernels. Methods based on Volterra kernels typically resort to coupled tensor decompositions of the kernels. However, in the case of parallel Wiener-Hammerstein systems, such methods require nontrivial constraints on the factors of the decompositions. In this paper, we propose an entirely different approach: by using special sampling (operating) points for the Jacobian of the nonlinear map from past inputs to the output, we can show that the Jacobian matrix becomes a linear projection of a tensor whose rank is equal to the number of branches. This representation allows us to solve the identification problem as a tensor recovery problem.
机译:我们考虑从Volterra内核识别平行维也纳哈默斯坦结构的问题。 基于Volterra Kernels的方法通常求助于核心串联的张量分解。 然而,在平行维也纳 - Hammerstein系统的情况下,这些方法需要对分解的因素的非活动约束。 在本文中,我们提出了一个完全不同的方法:通过使用过去输入到输出的非线性地图的特殊采样(操作)点,我们可以表明雅各比矩阵成为级别的张量的线性投影 等于分支的数量。 此表示允许我们将识别问题作为张量恢复问题解决。

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