We calculate, from sketches K 1 and K 2 , the sample inner product a s,(1,2) = |{6}| = 1, and the corresponding corpus sample size, denoted by D s,(1,2) = min(max(K 1 ), max(K 2 )) = min(11, 12) = 11.
the "margin-free" estimate of 11 = 1.4.