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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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23
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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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6
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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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6
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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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10
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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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57
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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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46
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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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132
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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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26
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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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17
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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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88
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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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18
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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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57
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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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19
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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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21
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October 24, 2026
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Good game well played
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13
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104
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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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36
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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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115
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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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142
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October 23, 2026
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[Phase 2 write-up] A cost-engineered factorized K=3 chain + transferred LT2 corrector (3.82e-9) (Submission #337389)
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1
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27
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October 23, 2026
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[Phase 2 write-up] What noise-corrected oracles show about a cumulant-propagation estimator (submission #337578)
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0
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21
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October 22, 2026
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[Phase 2 write-up] The (3,1) slice of κ₄: where V29 loses accuracy, and a two-term closure confirmed in a pre-registered test on 77 held-out networks (submission #334821)
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3
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73
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October 21, 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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0
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23
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October 21, 2026
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[Phase 2 write-up] Removing the global scale mode makes a carried κ4 core pay: extraction on/off ×0.380 on the grader inside e30_a's engine (submission #336317)
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1
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53
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October 20, 2026
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[Phase 2 write-up] Cumulant propagation under a compute budget: state-matched corrections, verified fast arithmetic, and a learned terminal corrector (submission #335413)
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0
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37
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October 19, 2026
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[Phase 2 write-up] Where the per-source leg representation of factorized K=3 ends (adj 3.8e-9), and the measurements behind it (submission #336225)
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0
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32
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October 18, 2026
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Approximate cumulant propagation with exact compute reductions
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0
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45
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October 16, 2026
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Flopscope: fix pull requests, with tests, for the open billing issues
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0
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50
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October 12, 2026
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Eligibility of solutions built on another participant's MIT-licensed forum code (§4 / §6)
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1
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114
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October 5, 2026
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Everything we tried: a factorized K=3 cumulant-propagation estimator at 0.25 x B, where its FLOPs go, and 25 measured dead ends (team 504aldo, rank ~10)
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5
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362
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October 4, 2026
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Phase 1 final evaluation question: Overfitting to public instances
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5
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857
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October 4, 2026
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