CardinalityKit

A comprehensive Python toolkit for cardinality estimation algorithms (Flajolet-Martin, LogLog, SuperLogLog, HyperLogLog, HyperReal): enabling privacy-preserving analytics, audience measurement, and sample-to-population extrapolation through probabilistic counting techniques

A new way for AI to search for data

View on GitHub

9GitHub stars

9commits on main

2forks

Python 80.6%, HTML 19.4% · created 2025-11-20 · last push 2026-08-25

What XERJ indexed

Snapshot

Whole repository

The whole repository at commit a2b927e08f. It is the newest commit on main.

Selected work

Giacomo Saccaggi
@GiacomoSaccaggi

Licence

The repository

MIT

LICENSE file checked at the pinned commit; the author agreed to inclusion.

The XERJ corpus

MIT, with credit

The owner added it on hub.xerj.org after signing in with GitHub, on 2026-10-28. Same terms as the repository. Answers name the repo, the commit and the file:line.

selected for the XERJ Corpus Hublicence clearedsuggested use: adapt with attribution

audience-measurementcardinality-estimationhyperloglogprivacy-preservingprobabilistic-data-structurespythonstreaming-algorithmsdistinct-counting

Example questions

How does CardinalityKit implement audience-measurement?
Show the cardinality-estimation code in CardinalityKit.

Inside the indexed corpus

Languages by size: Python 80.6%, HTML 19.4%.
On GitHub since 2025-11-20, last push 2026-08-25, 9 commits on main.

Licence on GitHub and in the corpus

GitHub reported MIT for GiacomoSaccaggi/CardinalityKit on 2026-10-29, and the LICENSE file at commit a2b927e08f was reviewed as MIT. They match, so answers from this corpus carry the same terms as the live repository.

Contributors

Giacomo Saccaggi (@GiacomoSaccaggi) has 4 selected repositories on the hub.

Their other repository pages: GiacomoSaccaggi/scomp_link, GiacomoSaccaggi/Mithril, GiacomoSaccaggi/ProjectCompass.

Using XERJ with CardinalityKit

Search an OpenAPI spec so an agent can find endpoints The hub files it under API design and specification.
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Ask questions about a GitHub repo without cloning it

The prompt

Paste it into your AI agent. It clones GiacomoSaccaggi/CardinalityKit at the pinned commit and indexes it on your machine.

Search the GitHub repository GiacomoSaccaggi/CardinalityKit with XERJ (https://hub.xerj.org/corpus/giacomosaccaggi--cardinalitykit).
Run these in a shell, in order, and check each result before the next:
1. xerj --help  (success: it prints usage). If xerj is missing: curl -fsSL https://xerj.org/get | sh
2. git clone https://github.com/GiacomoSaccaggi/CardinalityKit CardinalityKit && git -C CardinalityKit checkout a2b927e08f7cd562200b06595deb4c666cf54524
3. Start a local node and leave it running: xerj --insecure --data-dir ./xerj-data
4. xerj autoindex ./CardinalityKit --url http://127.0.0.1:9200 --prefix cardinalitykit --progress plain
5. xerj autoindex map --url http://127.0.0.1:9200
Then answer my question from the indexed files and cite the ax_path of every hit. Query syntax: https://xerj.org/llms.txt
Licence: MIT. Keep the copyright notice and credit the authors.

Giacomo Saccaggi API design and specification corpora

Stats: GitHub API, fetched 2026-10-29. Selected work and consent: the XERJ registry.