{
  "rule": "Prefer x0 PSNR drop <= 0.2 dB; rank by x64 PSNR gain, then SSIM and LPIPS. Fill by penalized score only if needed.",
  "baseline": {
    "x0": {
      "SSIM": 0.895209014415741,
      "PSNR": 27.989986419677734,
      "LPIPS": 0.235415980219841
    },
    "x64": {
      "SSIM": 0.8387279510498047,
      "PSNR": 26.110240936279297,
      "LPIPS": 0.256675660610199
    }
  },
  "selected": [
    "confidence_linear",
    "adaptive_blend"
  ],
  "candidates": [
    {
      "method": "adaptive_blend",
      "x0_psnr": 27.258615493774414,
      "x0_drop": 0.7313709259033203,
      "x64_psnr": 28.071706771850586,
      "x64_gain": 1.961465835571289,
      "x64_ssim": 0.8699930906295776,
      "x64_lpips": 0.18763911724090576,
      "passes_x0_guardrail": false,
      "fallback_score": 0.8987239837646483
    },
    {
      "method": "additive_anchor",
      "x0_psnr": 27.64495849609375,
      "x0_drop": 0.3450279235839844,
      "x64_psnr": 26.856220245361328,
      "x64_gain": 0.7459793090820312,
      "x64_ssim": 0.8464237451553345,
      "x64_lpips": 0.2512722909450531,
      "passes_x0_guardrail": false,
      "fallback_score": 0.4559234619140625
    },
    {
      "method": "confidence_linear",
      "x0_psnr": 27.880367279052734,
      "x0_drop": 0.109619140625,
      "x64_psnr": 27.3310546875,
      "x64_gain": 1.2208137512207031,
      "x64_ssim": 0.8445523381233215,
      "x64_lpips": 0.24558517336845398,
      "passes_x0_guardrail": true,
      "fallback_score": 1.2208137512207031
    },
    {
      "method": "curriculum",
      "x0_psnr": 27.492883682250977,
      "x0_drop": 0.4971027374267578,
      "x64_psnr": 26.560436248779297,
      "x64_gain": 0.4501953125,
      "x64_ssim": 0.8598828315734863,
      "x64_lpips": 0.18492969870567322,
      "passes_x0_guardrail": false,
      "fallback_score": -0.1440101623535156
    },
    {
      "method": "frequency_split",
      "x0_psnr": 27.57876968383789,
      "x0_drop": 0.41121673583984375,
      "x64_psnr": 27.393856048583984,
      "x64_gain": 1.2836151123046875,
      "x64_ssim": 0.8306059837341309,
      "x64_lpips": 0.22460408508777618,
      "passes_x0_guardrail": false,
      "fallback_score": 0.861181640625
    },
    {
      "method": "variance_deadzone",
      "x0_psnr": 27.28668212890625,
      "x0_drop": 0.7033042907714844,
      "x64_psnr": 27.158855438232422,
      "x64_gain": 1.048614501953125,
      "x64_ssim": 0.8385095596313477,
      "x64_lpips": 0.25623634457588196,
      "passes_x0_guardrail": false,
      "fallback_score": 0.04200592041015616
    }
  ]
}