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[Phase 2 write-up] Notes on the ARC Challenge Problem: Part 2
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0
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1
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November 10, 2026
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Phase2 code and writeup
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3
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108
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November 3, 2026
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Phase 2 Algorithmic Contribution Write-up - Submission #337582
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28
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October 31, 2026
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Late Phase 2 Technical Write-up — Submission #337188 — Ömer Kiraz
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25
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October 30, 2026
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Phase 2 Writeup and Follow-up Experiments in Application
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1
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27
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October 29, 2026
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Phase 2 Algorithmic Writeup
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0
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29
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October 29, 2026
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[Phase 2 Algorithmic Contribution] Addressing cumulant propagation's depth problem with scale separation
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0
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40
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October 28, 2026
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Phase 2 Write Up - No fitting - Estimator #337631
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0
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53
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October 28, 2026
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[Phase 2 write-up] κ₄: shape from theory, level from the fitted table (submission #337608)
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0
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24
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October 28, 2026
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[Write-up, submissions 337654 and 337568] The cumulant chain as a balanced system of errors: what K=3 cannot see on 1024×16, and why exact pieces break it
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0
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19
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October 28, 2026
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Phase 2 Report, Submission 337559
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0
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23
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October 28, 2026
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[Phase 2 write-up] A first-order κ3 lineage chain: what each part is worth and where it stops (submission #337601)
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0
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18
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October 28, 2026
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[Phase 2 write-up] How errors survive depth in cumulant propagation: a fit-free survival law, checked on ARC's reference chain, and four flopscope issues (submission #337350)
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1
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46
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October 28, 2026
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[Phase 2 write-up] A factorized K=3 cumulant chain whose corrections are fitted through its linearised mean propagation (submission #337048)
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0
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29
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October 28, 2026
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[Phase 2 write-up] Algorithmic contribution: e30_a plus message-passing corrector and covariance-defect dictionary (submission #337552)
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0
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16
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October 28, 2026
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[Phase 2 write-up] Where the error of the factorised cumulant chain lives, and what it costs (submission #337457)
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0
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20
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October 27, 2026
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Phase 2 write-up + materials (mliston) - submission #337641
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1
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90
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October 27, 2026
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[Phase 2 write-up] Sphere-frame cumulant propagation with age-structured κ₃ sources, and exact symmetry as a diagnostic of a tuned closure (1.50e-9, submission #337205)
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7
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72
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October 26, 2026
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# Phase 2 update: flopscope v0.12.3, deadline extension, and final submission nomination
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6
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185
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October 26, 2026
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[Phase 2 write-up] Cumulant-history moment closure under a metered budget: a low-rank κ₃ history, exact terminal refits, round-trip engineering, and where the error is born (1.92e-9, submission #333755)
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0
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39
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October 25, 2026
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[Phase 2 write-up] ARC SIMPLE in FlopScope: a cumulant-propagation implementation (#337649)
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0
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27
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October 25, 2026
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[Phase 2 write-up] Zero-Sample K=4 via Factored n^3-Memory Transport at 1024 x 16: 11.8x below augmented K=3, why memoryless closures stall, the only exact K=4 at 1024 x 16 (#336537)
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4
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114
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October 25, 2026
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Phase 2 write-up (cosmmmos): cumulant chain with exact repeated-index gains (γ = Φ − d₀d₂) and exact semi-diagonal births, MSE 4.0e-6 → 3.2e-8
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1
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29
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October 24, 2026
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[Phase 2 write-up] A third-cumulant chain at its boundary: random projections, a skew law, and where the next order's accuracy lives (submission #333534)
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3
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72
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October 24, 2026
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[Phase 2 write-up] A moment chain with a learned cross-layer corrector and a wall-time guard (submission #337436)
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0
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28
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October 24, 2026
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[Phase 2 write-up] A learned corrector that reads the engine's cross-neuron terms, saturation-aware compute and a free fourth-cumulant fold on factored cumulant propagation at width 1024 (submission #336955)
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3
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40
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October 24, 2026
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Good game well played
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13
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142
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October 24, 2026
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[Phase 2 write-up] A bias/variance error budget for factored K=3 cumulant propagation: what the slices can tolerate, measured (submission #337475)
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1
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46
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October 24, 2026
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How the hidden-set evaluation invokes whest run
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5
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123
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October 23, 2026
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Notes on the Problem (Phase 1)
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3
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155
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October 23, 2026
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