{
  "model": "XGBoost_NN_Ensemble+SAC_RL",
  "dataset_size": 12000,
  "features": [
    "power_mW",
    "repetition_rate_kHz",
    "scan_speed_mm_s",
    "pulse_duration_fs",
    "wavelength_nm",
    "num_passes",
    "spot_diameter_um",
    "focal_offset_um",
    "water_content",
    "threshold_fluence_J_cm2",
    "absorption_depth_nm",
    "incubation_coefficient",
    "refractive_index",
    "youngs_modulus_kPa",
    "degree_of_methacrylation",
    "crosslink_density_mol_m3",
    "two_photon_cross_section_GM",
    "pulse_energy_uJ",
    "peak_fluence_J_cm2",
    "effective_pulses",
    "overlap_percent"
  ],
  "targets": [
    "etch_depth_um",
    "etch_width_um",
    "surface_roughness_Sa_um",
    "aspect_ratio",
    "side_wall_angle_deg"
  ],
  "materials": [
    "GelMA_5",
    "GelMA_7",
    "GelMA_10",
    "GelMA_15",
    "GelMA_20",
    "HAMA_1",
    "HAMA_2",
    "HAMA_3",
    "HAMA_5",
    "GH_6",
    "GH_9",
    "GH_13",
    "GH_20",
    "PEG",
    "PEGDA",
    "Collagen",
    "Alginate",
    "Silk"
  ],
  "surrogate": {
    "etch_depth_um": {
      "R2": 0.9745,
      "MAE": 1.0543
    },
    "etch_width_um": {
      "R2": 0.9845,
      "MAE": 2.3349
    },
    "surface_roughness_Sa_um": {
      "R2": 0.8409,
      "MAE": 28.1783
    },
    "aspect_ratio": {
      "R2": 0.7074,
      "MAE": 0.4861
    },
    "side_wall_angle_deg": {
      "R2": 0.9326,
      "MAE": 4.0329
    }
  },
  "rl": {
    "success": 0.0,
    "error": 37.015223483244576,
    "algo": "SAC",
    "gamma": 0.7
  },
  "refs": [
    "TempoRL arxiv:2304.12187",
    "Recipe RL arxiv:2511.16297",
    "Petit JLMN 2025",
    "Biofabrication 2019 GelMA fs-laser",
    "ACS Appl Mater 2022 GelMA densification",
    "Bioactive Materials 2024 HAMA"
  ]
}