Fit the TrainerRank layout cost model (coefficient version 2) with a calibration campaign - #836

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trainer-rank-cost-recalibration

Sep 3, 2026

Commits on Sep 2, 2026

Cost-model calibration harness, layout features, and fitter

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4e6a003
Planner facts: pass TP size and GDN layer count to the layout scorer

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bc60696
Cost terms as a single source of truth: integer term functions shared by fitter and scorer

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22531ca
Cost calibration: interaction terms, length histograms, regret-refined fit, second-campaign cells

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91efbac
Layout score version 2: fitted interaction terms replace the hand-set constants

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23cf101
Cost calibration: time the production selection per cell; selector check; multi-start regret refinement

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Layout score v2: layer-type token terms and the campaign-1 fitted table

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Docs: fitted production score (version 2), calibration protocol, gates and findings

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Layout score v2: final table fitted on all 56 calibration cells

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7b19c7c
Final-table follow-ups: width-search test premise at 200 tokens; docs with the 56-cell metrics

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e38f4c8

Commits on Sep 3, 2026

Review fixes: gate the fitted table to its calibrated profile; fail loudly on calibration gaps; certificate

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3f9ee53
Docs: record the excluded CP4 cells as a deterministic CP4 hang (issue #840)

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8826c17
Re-review: narrow the calibrated profile to the measured envelope; expected-cell manifest

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624d46c
Calibration recipes launch exactly the manifest's cells

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090e19b
Right-size the recalibration: ten live terms, four features, compact certificate

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7d76cfc