SCSF accelerates eigenvalue dataset generation up to 3.5 times by grouping operators with similar spectra via truncated FFT sorting and reusing eigenpairs through Chebyshev subspace filters.
C.2 EXAMPLE To illustrate how the FDM can transform the wave equation into a system of matrix eigenvalue problems, let’s consider a concrete and straightforward example
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Accelerating Eigenvalue Dataset Generation via Chebyshev Subspace Filter
SCSF accelerates eigenvalue dataset generation up to 3.5 times by grouping operators with similar spectra via truncated FFT sorting and reusing eigenpairs through Chebyshev subspace filters.