Bloom Filters

  • Used for determining presence of an element in a set.
  • Uses a set of hash functions that return an integer.
  • The returned value is used as index into a bit vector.
  • hash1(element) => index1
  • hash2(element) => index2
  • To search an element, we check for both the index are set. If yes, element might be there. Else say No.
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