docs(delphi): add math-algorithm history & routing-regression reference#2613
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This was referenced Jul 17, 2026
This was referenced Jul 18, 2026
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Pull request overview
Adds a Delphi documentation reference (delphi/docs/MATH_ALGORITHM_HISTORY.md) that summarizes the evolution of Polis’s core math algorithms (Clojure reference implementation), with emphasis on the 2025 “all-49” comment-routing regression and how to reason about when an algorithm version was deployed.
Changes:
- Introduces a new “math algorithm history” document covering key algorithm introductions, numeric-output-changing edits, and notable bugs across routing/PCA/extremity/clustering/consensus.
- Documents the 2025 comment-routing regression mechanism (truthy
0in Clojure) and the Clojure-side fix in #2611, including parity implications for the Python port. - Provides a methodology section for mapping algorithm changes to deployments via “PROD DEPLOY” commits /
stablehistory / blob fingerprints.
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Adds delphi/docs/MATH_ALGORITHM_HISTORY.md — a git-archaeology reference of the core Polis math algorithms (comment routing, PCA/projection, extremity/repness, clustering, consensus/moderation): introductions, numeric-output-changing edits, and bugs, with verified commit hashes and dates. Includes the 2025 comment-routing regression (#1961, fixed in #2611), the pre-2018 uniform-random routing history, and how to map conversations to algorithm versions via the prod deploy timeline. Sourced entirely from public git history and code — no production data. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> commit-id:31321c47
This was referenced Jul 22, 2026
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Adds delphi/docs/MATH_ALGORITHM_HISTORY.md — a git-archaeology reference of the
core Polis math algorithms (comment routing, PCA/projection, extremity/repness,
clustering, consensus/moderation): introductions, numeric-output-changing edits,
and bugs, with verified commit hashes and dates. Includes the 2025 comment-routing
regression (#1961, fixed in #2611), the pre-2018 uniform-random routing history,
and how to map conversations to algorithm versions via the prod deploy timeline.
Sourced entirely from public git history and code — no production data.
Co-Authored-By: Claude Opus 4.8 noreply@anthropic.com
commit-id:31321c47
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