Space Saving
Space Saving Algorithm Space Saving tracks frequent items in a stream using a fixed number of counters, similar to Misra Gries, but with better accuracy in practice. It maintains estimates for item frequencies and guarantees bounded error. Unlike Misra Gries, it does not decrement all counters. Instead, it replaces the smallest counter when needed. Problem Given a stream $$ x_1, x_2, \dots, x_n $$ maintain approximate counts for the most...