ultra_log_log

0.2.0

Space-efficient distinct counting for the BEAM. Implements UltraLogLog (Ertl, VLDB 2024), a 2024 successor to HyperLogLog with 24–28% less memory at the same accuracy. Includes FGRA, MLE, and martingale estimators, CRDT merge, and bit-exact validation against the Hash4j Java reference.

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May 17, 2026

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Apache-2.0

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