python-math #44: refactor(math): PR 14b/14c — readable two-phase stats + blob-injection pins - #2673
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This was referenced Jul 27, 2026
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python-math #43: docs(delphi): s7 goal state + journal — mode collapse executed, battery 20/20
#2672
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…s + blob-injection pins ## What `GOAL_CUTOVER_READY.md` Phase 3, the clarity refactor (Julien ruling 2026-07-27: land the clean code PRE-cutover; spec in `HANDOFF_PR14_VECTORIZED_REFACTOR.md`). - 14c: `compute_group_comment_stats_df` is split into the plumbing (`_group_comment_vote_counts`: mapping, totals, cross-product, the `other_*` columns) and the statistics recipe (`_comment_stats_from_counts`: pseudocount probabilities, proportion tests on raw counts, representativeness ratios, two-proportion tests, signed metrics, the "repful" pick) — the recipe now reads like the scalar chain it replaced. Pure code motion: identical operations in identical order, with bit-identity guarded by the certification battery (which replays 20 recorded dataset entries through the engine and compares against Clojure reference recordings). - 14b: `TestBlobInjectionStats` injects the CLOJURE result blob's group memberships (unfolded through the blob's own base clusters) plus the dataset votes into the PRODUCTION stats path, and compares every repness entry in the blob per (gid, tid): n-success / n-trials / p-success / p-test / repness / repness-test / repful-for. Green on the `vw` AND `biodiversity` datasets (`repness-test` is compared at 2e-6 relative tolerance because Clojure emits it rounded). ## Also The three sub-threshold cleanups from the collapse-review agent: `CUTOVER_RUNBOOK.md` drops the stale engine-mode env line; the greedy-carry threshold test drops its now-duplicate `improved` parametrize label; two module docstrings updated to collapse-era wording. commit-id:acff8fbe
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What
GOAL_CUTOVER_READY.mdPhase 3, the clarity refactor (Julien ruling 2026-07-27: land the clean code PRE-cutover; spec inHANDOFF_PR14_VECTORIZED_REFACTOR.md).compute_group_comment_stats_dfis split into the plumbing (_group_comment_vote_counts: mapping, totals, cross-product, theother_*columns) and the statistics recipe (_comment_stats_from_counts: pseudocount probabilities, proportion tests on raw counts, representativeness ratios, two-proportion tests, signed metrics, the "repful" pick) — the recipe now reads like the scalar chain it replaced. Pure code motion: identical operations in identical order, with bit-identity guarded by the certification battery (which replays 20 recorded dataset entries through the engine and compares against Clojure reference recordings).TestBlobInjectionStatsinjects the CLOJURE result blob's group memberships (unfolded through the blob's own base clusters) plus the dataset votes into the PRODUCTION stats path, and compares every repness entry in the blob per (gid, tid): n-success / n-trials / p-success / p-test / repness / repness-test / repful-for. Green on thevwANDbiodiversitydatasets (repness-testis compared at 2e-6 relative tolerance because Clojure emits it rounded).Also
The three sub-threshold cleanups from the collapse-review agent:
CUTOVER_RUNBOOK.mddrops the stale engine-mode env line; the greedy-carry threshold test drops its now-duplicateimprovedparametrize label; two module docstrings updated to collapse-era wording.commit-id:acff8fbe
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