MODEL:
  FBNET_V2:
    ARCH: ""
    ARCH_DEF: [{
      "trunk": [
          [["conv_k3", 8, 2, 1], ["conv_k3", 8, 1, 1, {"expansion": 1}]],
          [["conv_k3", 10, 2, 1, {"expansion": 4}]],
          [["conv_k3", 24, 2, 2, {"expansion": 6}]],
          [["conv_k3", 40, 2, 2, {"expansion": 6}], ["conv_k3", 64, 1, 2, {"expansion": 6}]]
      ],
      "kpts": [
          [["conv_k3", 112, 2, 3, {"expansion": 6}], ["conv_k3", 160, 1, 1, {"expansion": 4}]]
      ],
      "bbox": [
          [["conv_k3", 112, 2, 3, {"expansion": 6}], ["conv_k3", 160, 1, 1, {"expansion": 4}]]
      ],
      "rpn": [
          [["conv_k3", 64, 1, 1, {"expansion": 6}]]
      ]
    }]