Method expectedFpp

output/java_guava/1.4.16/BloomFilter.java:188–191

Returns the probability that plain #mightContain(Object) will erroneously return true for an object that has not actually been put in the BloomFilter. Ideally, this number should be close to the fpp parameter passed in plain #create(Funnel, int, double), or

()

  public double expectedFpp() {
    // You down with FPP? (Yeah you know me!) Who's down with FPP? (Every last homie!)
    return Math.pow((double) bits.bitCount() / bitSize(), numHashFunctions);
         }

  /**
   * Returns the number of bits in the underlying bit array.