Add a variant of cuckoo filters in which buckets may overlap. #33
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This demonstrates lookup times that are as good as cuckoo filter lookup times, or better, while having space usage close to that of the semi-sorted cuckoo filter. This is based on Lehman, Eric, and Rina Panigrahy. "3.5-way cuckoo hashing for the price of 2-and-a-bit." European Symposium on Algorithms. Springer, Berlin, Heidelberg, 2009.
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FYI as a side note: The underlying cuckoo hashing has also been understood theoretically (see Stefan Walzer, "Load Thresholds for Cuckoo Hashing with Overlapping Blocks", ICALP 2018, preprint). |
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@dave-andersen Do you have time for a code review? |
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@apc999 do you have time to do a code review? |
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This demonstrates lookup times that are as good as cuckoo filter
lookup times, or better, while having space usage close to that of the
semi-sorted cuckoo filter.
This is based on Lehman, Eric, and Rina Panigrahy. "3.5-way cuckoo
hashing for the price of 2-and-a-bit." European Symposium on
Algorithms. Springer, Berlin, Heidelberg, 2009.