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Re:Xor Filters: Faster and Smaller Than Bloom Filters by thomasmg on Friday December 20, 2019 @02:37AM (#21842316)
No, actually 2 would also work. It's just that 3 hash functions needs the least space for some reason (less than 2, less than 4 or more).
Re:Xor Filters: Faster and Smaller Than Bloom Filters by fixf on Friday December 20, 2019 @04:04AM (#21842660)
Well met, and thanks for identifying the solution using overhead.