v0.8.0

New features:

• implementation of Wyhash final version 4

v0.7.2

New features:

• alternative distinct count estimators for HyperLogLog and UltraLogLog

v0.7.1

New features:

• martingale estimator that can be used in conjunction with HyperLogLog and UltraLogLog

v0.7.0

New features:

• new HyperLogLog implementation
• added PackedArray.update(byte[], int, long, LongBinaryOperator)
• added PackedArray.readIterator(byte[], int)
• added Hasher.getHashBitSize()
• added HashStream.reset()

Improvements:

• faster Hasher.hashCharsToLong(CharSequence) implementations

Incompatible changes:

• made HashStream interface package-private, use HashStream32, HashStream64, HashStream128 instead
• made Hasher interface package-private, use Hasher32, Hasher64, Hasher128 interfaces instead
• eliminated HashSink.putUnorderedIterable(Iterable, HashFunnel, Supplier), use HashSink.putUnorderedIterable(Iterable, HashFunnel, Hasher64) instead

v0.6.2

Improvements:

• UltraLogLog: Improved estimation bias, especially for small precisions

New features:

• PseudoRandomGenerator: Generation of exponentially and uniformly distributed random double values

v0.6.1

Improvements:

• better and faster estimation algorithm for UltraLogLog

v0.6.0

New features:

• Similarity hashing algorithms:
  • MinHash
  • SuperMinHash

v0.5.0

New features:

• UltraLogLog, a sketch for approximate distinct counting

v0.4.0

New features:

• Streaming functionality: Hasher.hashStream() opens a new hash stream
• New convenience functions:
  • HashSink and HashStream define various put methods for native arrays
  • Direct hashing of char sequences:
    • Hasher32.hashCharsToInt
    • Hasher64.hashCharsToLong
    • Hasher128.hashCharsTo128Bits

Bug fixes:

• WyhashFinal3.putBytes gave wrong results for nonzero offsets

v0.3.1

Bug fixes:

• fixed bug in putChars method of Wyhash and Komihash implementations