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Shipped covariance_propagation example trips the Phase 2 residual cap locally (0.16.0) but grades fine - what happens when the evaluator upgrades?
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3
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32
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August 28, 2026
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[Phase 1 write-up] Variance reduction beats closure refinement: a moment-matched sampling estimator (submission #324497)
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0
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20
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August 26, 2026
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[Phase 2 write-up] Complementary errors beat either branch: a fixed 0.75/0.25 covariance + whitened antithetic MC blend (submission 328274)
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0
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34
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August 26, 2026
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"Unusually easy leaderboard set" effect is gone
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1
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61
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August 24, 2026
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Covariance propagation baseline scores 3.93e-7/3.93e-6
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0
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43
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August 24, 2026
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Phase 2 — Official Start Date and Details?
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2
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66
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August 23, 2026
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Phase 2 of the ARC White-Box Estimation Challenge is live 🚀
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1
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97
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August 23, 2026
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Phase 1 SOLUTION, ideas for Phase 2 and the honest public frontier (all methods combined and explained)
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4
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136
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August 23, 2026
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Queries regarding phase 2
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1
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94
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August 20, 2026
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How did you use AI?
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2
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75
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August 20, 2026
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[Phase 1 research atlas] How I reached public #16 — and why the next 56 experiments failed
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3
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192
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August 20, 2026
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Phase 1 Report, Submission 327801
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5
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106
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August 20, 2026
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Notes on the Problem (Phase 1)
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2
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86
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August 19, 2026
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A technique census of Phase 1: what the mathematics is doing, what walls it hit, and what's still open
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13
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406
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August 19, 2026
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Phase 1 Substack Post
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0
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56
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August 18, 2026
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Phase 2 Starting?
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1
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87
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August 18, 2026
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Our current approach: Korobov hybrid trunk (E) + offline ridge residual corrector (G) — ~16% graded gain, what we learned
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0
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38
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August 18, 2026
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Measured: the metered-FLOP vs residual-wall-time trade-off, and what it implies for a Phase 2 cap
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0
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36
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August 18, 2026
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Bitter-lesson-pilled sampling-free propagator yielding 1.5e-5 raw MSE
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3
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131
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August 17, 2026
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[Write-up, submission 326725] Measuring the ceiling of a method class: how we closed 54 families of estimators without building them
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0
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83
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August 17, 2026
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Phase 1 Algorithmic Contribution Write-up — Submission #327792
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0
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57
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August 17, 2026
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Phase 1 Write-Ups, Team Puffi
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3
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134
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August 17, 2026
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Phase 1 Write-Up: Useful tools, rejected ideas, a warning, and more
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0
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75
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August 17, 2026
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[Phase 1 write-up] A calibrated account of the sampling plateau, plus two negative results (submission #326954)
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0
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74
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August 17, 2026
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Phase 1 write-up: The missing basis was not the mechanism - submission #327749
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0
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84
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August 17, 2026
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Phase I Submission: Structure-Aware Estimation for Random ReLU MLPs
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0
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977
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July 27, 2026
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[Phase 1 Write-Up] My Write-Up for Submission 326960
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0
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72
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August 16, 2026
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[Phase 1 Write-Up] My Approach Write-Up for the submission 327651
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0
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103
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August 16, 2026
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[Phase 1 writeup] Fixed positive sampling is nearly saturated (submission 327786)
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0
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112
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August 16, 2026
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Phase 1 Write Up - Bias–Variance Tradeoff Across Control Layers (submission #327723)
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0
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114
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August 15, 2026
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