{
  "baseline": {
    "limitations": "The dataset contains 64 independent scenario groups. This deliberately simple linear reduced model is a reproducible lower bar, not a best-model claim.",
    "persistence_test_metrics": {
      "field_nrmse_by_temperature_rise": 1.0,
      "field_rmse_k": 49.4196405537079,
      "maximum_temperature_mae_k": 41.70680921036539
    },
    "rollout_wall_seconds_for_test_split": 0.007351082982495427,
    "selected_model": {
      "inputs": "current reduced temperature state, next source controls, material/boundary descriptors and source positions/widths",
      "name": "PCA plus ridge linear state-space baseline",
      "rank": 12,
      "ridge": 1e-06
    },
    "selection_rule": "minimum validation full-field RMSE; test split unopened during selection",
    "split_unit": "scenario_id; all counterfactual branches remain together",
    "task": "autoregressive full-field temperature rollout",
    "test_metrics": {
      "field_nrmse_by_temperature_rise": 0.1972225886329101,
      "field_rmse_k": 9.746669439310214,
      "maximum_temperature_mae_k": 6.206834322360767
    },
    "test_trajectories": 24,
    "training_trajectories": 144,
    "validation_metrics": {
      "field_nrmse_by_temperature_rise": 0.13296167009541626,
      "field_rmse_k": 6.081201720216076,
      "maximum_temperature_mae_k": 4.909582172242256,
      "rank": 12,
      "ridge": 1e-06
    },
    "validation_trajectories": 24
  },
  "maximum_heat_balance_relative_residual": 1.409026044876523e-11,
  "maximum_prefix_control_difference_w_m3": 0.0,
  "maximum_prefix_temperature_difference_k": 0.0,
  "numerical_validation": {
    "analytical_decay": {
      "coarse": {
        "cells_per_axis": 12,
        "relative_l2_error": 0.012206241087996944,
        "status": "completed",
        "steps": 40
      },
      "fine": {
        "cells_per_axis": 24,
        "relative_l2_error": 0.0026049779023684908,
        "status": "completed",
        "steps": 80
      }
    },
    "checks": {
      "analytical_error_decreases": true,
      "analytical_fine_relative_l2_below_0p5pct": true,
      "heat_balance_relative_to_stored_energy_below_1e_8": true,
      "mesh_refinement_sensor_change_below_2pct": true,
      "time_refinement_sensor_change_below_2pct": true
    },
    "maximum_heat_balance_residual_relative_to_stored_energy_change": 8.929823584984711e-14,
    "mesh_refinement_final_sensor_relative_change": 2.3365594418925673e-05,
    "status": "passed",
    "time_refinement_final_sensor_relative_change": 0.0024148046819599464
  },
  "scenario_count": 64,
  "scenario_split_overlap_count": 0,
  "split_counts": {
    "test": 24,
    "train": 144,
    "validation": 24
  },
  "status": "passed",
  "temperature_range_k": [
    293.15,
    483.476579772843
  ],
  "trajectory_count": 192
}