[{"data":1,"prerenderedAt":122},["ShallowReactive",2],{"run:lego-mcmc-fix3-noise5e2-smoke":3,"run-findings:lego-mcmc-fix3-noise5e2-smoke":90},{"run":4,"config":19,"metrics":53,"curve":59,"assets":89},{"id":5,"title":5,"subtitle":6,"eyebrow":7,"date":8,"workspace":9,"commit":10,"tags":11,"verdict":18},"lego-mcmc-fix3-noise5e2-smoke","G3 MCMC fix3 smoke #1 — noise 5e2 (fix2 の 1\u002F10) で 500 iter loss trajectory 観察","Run summary · G3 MCMC fix3 sweep","2026-07-01","splat","c8c984a",[12,13,14,15,16,17],"mcmc","g3","fix3","smoke","noise-sweep","lego","partial",[20,23,26,29,32,35,38,41,44,47,50],{"key":21,"value":22},"dataset","\u002FUsers\u002Fotkrickey\u002Fdev\u002F3dgs-workspace\u002Fdatasets\u002Fnerf_synthetic\u002Flego",{"key":24,"value":25},"gt_convention","WhiteBg",{"key":27,"value":28},"iterations","500",{"key":30,"value":31},"seed","42",{"key":33,"value":34},"capacity","500,000 splats",{"key":36,"value":37},"sh_degree","3",{"key":39,"value":40},"loss","L1Ssim",{"key":42,"value":43},"lambda","0.200",{"key":45,"value":46},"ssim","window=7 sigma=1",{"key":48,"value":49},"backend.backward","Simd",{"key":51,"value":52},"backend.loss_path","Gpu",{"psnr":54,"wallclock":55,"wallclock_regress":56,"splats":57,"final_loss":58},11.921218872070312,"8.01s",false,9123,"1.319967e-1",{"loss":60,"splats":85},{"iters":61,"values":73},[62,63,64,65,66,67,68,69,70,71,72],1,50,100,150,200,250,300,350,400,450,500,[74,75,76,77,78,79,80,81,82,83,84],0.34533897042274475,0.2672208249568939,0.21040953695774078,0.18762435019016266,0.15907537937164307,0.16211406886577606,0.14670203626155853,0.14859572052955627,0.1387929469347,0.13842573761940002,0.13199669122695923,{"iters":86,"values":87},[62,63,64,65,66,67,68,69,70,71,72],[88,88,88,88,88,88,88,88,88,88,57],5207,{"has_renders":56,"has_splat":56},[91],{"id":92,"title":93,"date":94,"status":95,"polarity":96,"category":97,"axes":98,"tags":99,"task_code":104,"related_runs":105,"delta_psnr":116,"delta_wallclock":117,"rank":118,"verdict":119,"impact_summary":120,"detail_path":121},"p1-mcmc-fix3-negative","G3 MCMC fix3 — 5 連敗確定、scale_l1 犯人 + relocation 30k で 14.6 dB 頭打ち","2026-07-21","stable","negative","negative-finding",[62],[12,13,14,96,100,101,102,103],"5-consecutive-failure","scale-eigen-l1","ablation","lego-30k","G3 MCMC fix3 (7 月実行プラン)",[106,5,107,108,109,110,111,112,113,114,115],"lego-mcmc-fix3-noise5e1-smoke","lego-mcmc-fix3-noise5e3-smoke","lego-mcmc-fix3-noise5e1-iter2000","lego-mcmc-fix3-noise5e2-iter2000","lego-mcmc-fix3-noise5e3-iter2000","lego-mcmc-fix3-ablation-A-baseline-iter2000","lego-mcmc-fix3-ablation-B-scalel1only-iter2000","lego-mcmc-fix3-ablation-C-relocationonly-iter2000","lego-mcmc-fix3-final-relocation-only-30k","lego-mcmc-fix3-final-noise-relocation-30k","Phase I 36.11 dB 比 -21 dB (relocation-only) \u002F -21 dB (noise-relocation)、fix2 17.38 dB 比 -2.7 dB (更に劣化)","Phase I 11m48s 比 +11x (relocation-only 2h12m) \u002F +13x (noise-relocation 2h38m)","high","5-consecutive-failure-scope-out","\u003Cstrong>G3 MCMC fix3 = 5 連敗確定\u003C\u002Fstrong>。fix2 (17.38 dB) 敗因の calibration ズレを、既実装の 3 欠陥修正版で再挑戦。\u003Cstrong>500 iter smoke で crash なし完走\u003C\u002Fstrong>、\u003Cstrong>2000 iter で 10-12 dB 頭打ち\u003C\u002Fstrong>、\u003Cstrong>ablation で scale_eigen_l1 の毒性を -4.4 dB と測定\u003C\u002Fstrong>、\u003Cstrong>scale_l1 除去した relocation + growth schedule の 30k full 2 パターンで PSNR 14.65 \u002F 14.69 dB\u003C\u002Fstrong> (Phase I baseline 36.11 dB 比 -21 dB)。犯人は複合: (1) scale_eigen_l1 実装が過剰罰化 or 符号ミス、(2) relocation の Eq.9 probability-preserving 実装が本実装の SoA parameterization と結合していない (splats 1.3-1.8M まで肥大化するが PSNR が付いてこない)。\u003Cstrong>7 月実行プラン G3 の timebox 判定基準通り即撤退\u003C\u002Fstrong>、卒論 §5.4 negative finding として 5 連敗目に確定、future work 送り。\u003Cstrong>ただし本 negative finding は従来の 4 連敗より格段に強い evidence\u003C\u002Fstrong> (component ablation で犯人を数値で切り分け、30k full の decisive failure まで到達)、卒論 measurement contribution として §5.4 で厚く記述可能。","\u002Ffindings\u002Fp1-mcmc-fix3-negative\u002F",1790227324506]