Volume 7 (2011) Article 10 pp. 147-153 [Note]
The Influence Lower Bound Via Query Elimination
by
We give a simple proof, via query elimination, of a result due to O'Donnell, Saks, Schramm, and Servedio, which shows a lower bound on the zero-error expected query complexity of a function $f$ in terms of the maximum influence of any variable of $f$. Our lower bound also applies to the two-sided error expected query complexity of $f$, and it allows an immediate extension which can be used to prove stronger lower bounds for some functions.