L1 sandwiching suffices for efficient PQ learning via Iterative Chow Filtering, giving quasipolynomial-time algorithms for DNFs under uniform distribution and exponential improvements for circuits and PTFs.
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Iterative Chow Filtering for Learning with Distribution Shift
L1 sandwiching suffices for efficient PQ learning via Iterative Chow Filtering, giving quasipolynomial-time algorithms for DNFs under uniform distribution and exponential improvements for circuits and PTFs.