Comment by gsf_emergency_6

1 month ago

ELI5 which features of double descent evoked tunnelling to you?

If we look at "twice made dips", we say two times as there is first a dip, then a peak (rise and dip), and then the next dip. This is like when one hops the band gap: there is first a free wave, then one that looks like it dies out, but if it is still a bit big by the end of the gap, then it goes on to the next free wave.

  • Bloch oscillations? Didn't see that coming tbh. ELIgs then

    • No, not so fancy (do they arise from interference from the internal reflections?).

      In standard tunnelling, one starts with a normal oscillation, goes to evanescence in the "tunnelling" regime, and then continues with oscillation again once on the low side of the potential; in double descent the test error goes way up (like the potential earlier) in the "tunnelling" regime, and then on the far side comes back down and then continues descending.

      Have I explicated my model?

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