Geometric Deep Learning on Graphs and Manifolds Using ...
Chebyshev Spectral CNN (ChebNet). In order to allevi-ate the cost of explicitly computing the graph Fourier trans-form,Defferrardetal.[13]usedanexplicitexpansioninthe Chebyshev polynomial basis to represent the spectral filters gα(∆) = rX−1 j=0 αjTj(∆˜ ) = rX−1 j=0 αjΦTj(Λ˜)Φ⊤, (4) where ∆˜ = 2λ−1
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