FFTKF applies an FFT low-pass mask and a Kalman filter to privatized gradients, reporting modest accuracy gains over DP-SGD and DiSK on several image benchmarks, but with incomplete privacy accounting.
Fourier transform-based optimization of particle velocity estimation for noise reduction in tracking experiments.Journal of Signal Processing, 35(4):123–135, 2025
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Fast Fourier Transform-Based Spectral and Temporal Gradient Filtering for Differential Privacy
FFTKF applies an FFT low-pass mask and a Kalman filter to privatized gradients, reporting modest accuracy gains over DP-SGD and DiSK on several image benchmarks, but with incomplete privacy accounting.