inverse graph fourier transform

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subject:: Data Science Methods for Large Scale Graphs parent:: Graph Signals and Graph Signal Processing theme:: math notes

Inverse Graph Fourier Transform

Let $S=V\Lambda V^{\ast }$ be a diagonalizable graph shift operator and $x$ a graph signal. Let $\hat{x}=V^{\ast }x$ be the graph fourier transform of $x$. Then the inverse graph fourier transform is given as $x=IGFT(\hat{x})=V\hat{x}$

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