metadata/mix_optimization_report.json

{
  "enabled": true,
  "applied": true,
  "metric": "proxy_quality",
  "best_index": 0,
  "best_metric": 0.09896651251363371,
  "selected_candidate": {
    "web_ratio": 0.95,
    "synthetic_ratio": 0.050000000000000044
  },
  "results": [
    {
      "index": 0,
      "candidate": {
        "web_ratio": 0.95,
        "synthetic_ratio": 0.050000000000000044
      },
      "sample_docs": 85330,
      "sample_bytes": 255013669,
      "proxy_metric": 0.09896651251363371,
      "proxy_metrics": {
        "proxy_weighted_loss": 9.104427998937915,
        "proxy_weighted_loss_std": 0.07763722445479383,
        "proxy_quality": 0.09896651251363371
      },
      "proxy_passed": true
    }
  ]
}