{
  "version": "v3",
  "sprint": "A15",
  "trained_at": "2026-04-01T22:58:38.406635+00:00",
  "paper": "Sayyad et al., Sensors 2023 doi:10.3390/s23125659",
  "architecture": "Stack-LSTM (3 layers, hidden=128)",
  "early_stop_patience": 3,
  "wpt": {
    "wavelet": "db4",
    "level": 1,
    "window": 512,
    "stride": 256,
    "n_features": 128
  },
  "rf_selection": {
    "threshold_pct": 0.5,
    "n_selected": 19,
    "cols": [
      "a_mean_Axial_Force",
      "a_mean_vib_x",
      "a_peak_amp_Bending_Moment_Y",
      "a_rms_Axial_Force",
      "a_p2p_Bending_Moment_Y",
      "d_rms_Bending_Moment_Y",
      "d_var_Bending_Moment_Y",
      "d_peak_amp_vib_y",
      "d_p2p_vib_y",
      "d_kurtosis_Bending_Moment_Y",
      "d_std_Bending_Moment_Y",
      "a_mean_vib_y",
      "a_skew_Torsion_Z",
      "a_mean_Torsion_Z",
      "d_p2p_Bending_Moment_Y",
      "a_p2p_Torsion_Z",
      "a_kurtosis_Bending_Moment_Y",
      "d_p2p_vib_x",
      "a_mean_Spindle_Power"
    ]
  },
  "split": "70/30 temporal within each case",
  "seq_len": 50,
  "signal_norm": "z-score before WPT (paper Section 4.2)",
  "feature_norm": "z-score before LSTM (paper Section 5)",
  "signals": [
    "Axial_Force",
    "Bending_Moment_X",
    "Bending_Moment_Y",
    "Torsion_Z",
    "vib_x",
    "vib_y",
    "Spindle_Power",
    "Spindle_Current"
  ],
  "W1": {
    "r2": 0.9992,
    "rmse": 0.0081,
    "mape": 6.792,
    "badge": "VALIDATED",
    "paper_r2": 0.964,
    "paper_rmse": 0.051,
    "paper_mape": 3.676
  },
  "W2": {
    "r2": 0.9945,
    "rmse": 0.0107,
    "mape": 22.495,
    "paper_r2": 0.985,
    "paper_rmse": 0.034,
    "paper_mape": 2.728
  },
  "total_ref_sec_w1": 3523.45,
  "feat_mean_path": "feat_mean_v3.npy",
  "feat_std_path": "feat_std_v3.npy",
  "rf_cols_path": "rf_cols_v3.json"
}