Communication Rate

Rate = plaintext bits / response bits. Higher is better (1.0 = optimal, no expansion). Only schemes that explicitly report this metric are shown.

Amortized Offline Cost

Per-query amortized cost of the offline/preprocessing phase. Currently reported by Piano and RMS24 (Group 2b schemes with interactive-hint preprocessing).

Amortized Offline Communication

Offline communication cost divided by the amortization window (KB per query)

Amortized Offline Time

Offline computation cost divided by the amortization window (ms per query)