17 lines
628 B
Markdown
17 lines
628 B
Markdown
Bloom Filter
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============
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This JavaScript bloom filter implementation uses the non-cryptographic
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[Fowler–Noll–Vo hash function][1] for speed.
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Although the bloom filter requires *n* hash functions, we can simulate this
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using only *two* hash functions. In fact, we cheat and get the second hash
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function almost for free by iterating once more on the first hash using the FNV
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hash algorithm.
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Thanks to Will Fitzgerald for his [help and inspiration][2] with the hashing
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optimisation.
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[1]: http://isthe.com/chongo/tech/comp/fnv/
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[2]: http://willwhim.wordpress.com/2011/09/03/producing-n-hash-functions-by-hashing-only-once/
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