BITFUNNEL INNOVATIONS -Higher Rank Rows Rank00100010010001000 0123456789101112131415 Rank r: Rank111001100 01234567 89101112131415 ir +(io mod2) Rank 2 1100 0123 4567 .W:machine word log2 891011 12131415Higher Rank Rows  Rank r:  W : machine word 的log2