An improved version of HyperLogLog
HyperLogLog with lots of sugar (Sparse, LogLog-Beta bias correction and TailCut space reduction) brought to you by Axiom - axiomhq/hyperloglog
An improved version of HyperLogLog launched on June 26, 2017 with 194 votes, #158 of 3,107 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 9 years on.
In plain words
This is an improved version of HyperLogLog, a probabilistic data structure used for counting large datasets efficiently. It targets developers working with big data applications who need fast cardinality estimation with reduced memory usage. The project was released on GitHub in 2017 and offers enhancements to the original algorithm's accuracy and performance for counting distinct elements in streams of data.
written from the facts on this page · September 2026
Does a similar job
all alternatives →
HyperLogLog in Zig2023 · github.com · ▲154Zig library for HyperLogLog estimation. Contribute to axiomhq/zig-hyperloglog development by creating an account on GitHub.
HyperLogLog intersections2018 · github.com · ▲88HyperMinHash: Bringing intersections to HyperLogLog - axiomhq/hyperminhash
Reducing the size of PCSA to that of HyperLogLog2018 · github.com · ▲45Contribute to seiflotfy/pcsa development by creating an account on GitHub.
FastGraphRAG – Better RAG using good old PageRank2024 · github.com · ▲457Hey there HN! We’re Antonio, Luca, and Yuhang, and we’re excited to introduce Fast GraphRAG, an open-source RAG approach that leverages knowledge graphs and the 25 years old PageRank for better information retrieval and reasoning. Building a good RAG pipeline these days takes a lot of manual optimizations. Most engineers intuitively start from naive RAG: throw everything in a vector database and hope that semantic search is powerful enough. This can work for use cases where accuracy isn’t too important and hallucinations are tolerable, but it doesn’t work for more difficult queries that…
LogLog-Beta: Like (slightly better than) HyperLogLog++ but simpler2017 · github.com · ▲7LogLog based Cardinality Estimator. Contribute to seiflotfy/loglogbeta development by creating an account on GitHub.

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