| { |
| "experiment": "PGAC Phase 2 \u2014 Probe-Gated Adaptive Compute on Qwen3.6-27B", |
| "corpus": { |
| "gsm8k": 30, |
| "simpleqa": 20, |
| "wikipedia": 40, |
| "total_residuals_per_layer": 39375 |
| }, |
| "primary_finding": { |
| "headline": "3.57x compound inference speedup at 8pp quality loss", |
| "config": "linear probe + top-(4k) prediction breadth + early-exit (1.67x avg)", |
| "best_pair": "L11\u2192L31 (gap 20, early-mid)" |
| }, |
| "tradeoff_curve_L11_L31": [ |
| { |
| "m": 128, |
| "recall": 0.4005, |
| "layer_speedup": 2.96, |
| "compound_w_exit": 4.94 |
| }, |
| { |
| "m": 256, |
| "recall": 0.5067, |
| "layer_speedup": 2.93, |
| "compound_w_exit": 4.89 |
| }, |
| { |
| "m": 512, |
| "recall": 0.6097, |
| "layer_speedup": 2.86, |
| "compound_w_exit": 4.78 |
| }, |
| { |
| "m": 1024, |
| "recall": 0.7002, |
| "layer_speedup": 2.73, |
| "compound_w_exit": 4.56 |
| }, |
| { |
| "m": 2048, |
| "recall": 0.7754, |
| "layer_speedup": 2.5, |
| "compound_w_exit": 4.18 |
| }, |
| { |
| "m": 4096, |
| "recall": 0.8375, |
| "layer_speedup": 2.14, |
| "compound_w_exit": 3.57, |
| "sweet_spot": true |
| }, |
| { |
| "m": 8192, |
| "recall": 0.8972, |
| "layer_speedup": 1.67, |
| "compound_w_exit": 2.79 |
| } |
| ], |
| "sweet_spots_by_quality_budget": { |
| "8pp_loss_within_sae_floor": { |
| "m": 4096, |
| "compound_speedup": 3.57 |
| }, |
| "5pp_loss_tighter": { |
| "m": 8192, |
| "compound_speedup": 2.79 |
| }, |
| "12pp_loss_relaxed": { |
| "m": 2048, |
| "compound_speedup": 4.18 |
| } |
| }, |
| "layer_pair_3_experiment": { |
| "L11_L31": { |
| "gap": 20, |
| "recall_at_k_128": 0.4005, |
| "recall_at_2k": 0.5067 |
| }, |
| "L31_L55": { |
| "gap": 24, |
| "recall_at_k_128": 0.2796, |
| "recall_at_2k": 0.3671 |
| }, |
| "L11_L55": { |
| "gap": 44, |
| "recall_at_k_128": 0.2057, |
| "recall_at_2k": 0.2813 |
| } |
| }, |
| "verdict": "\ud83d\udfe2 STRONG with proper m selection \u2014 paper-grade positive contribution", |
| "paper_status": "ship", |
| "comparison_prior_art": { |
| "MxD_May_2025": "1.5-2x layer speedup", |
| "RouteSAE_2025": "training only, not inference", |
| "MoD_2024": "1.5x token-level skip", |
| "PGAC_this_work": "3.57x compound at iso-SAE-floor" |
| } |
| } |
