{
  "head": "split_tower_5scale_192h_5std_4dw",
  "params": 4068954,
  "epochs": 8,
  "architecture": "cofiber decomposition with 4 scales (strides 16/32/64/128) + P3 stride-8 via transposed conv + top-down lateral + 2 separate towers (5 std 3x3 + 4 DW residual per tower) at 192 hidden. Five prediction levels: P3-P7 at strides 8/16/32/64/128.",
  "n_images": 5000,
  "mAP_0.5_0.95": 0.2463,
  "mAP_0.50": 0.3712,
  "mAP_0.75": 0.2703,
  "mAP_small": 0.149,
  "mAP_medium": 0.302,
  "mAP_large": 0.377,
  "AR_small": 0.26,
  "AR_medium": 0.617,
  "AR_large": 0.743,
  "notes": "Extends the 4-scale split tower to 5 scales by adding a 4th cofiber band (stride 128). Cofiber n_scales went from 3 to 4; param cost ~52K (one extra GroupNorm + lateral conv). Matches FCOS scale coverage while keeping cofiber in place of FPN."
}