class_docstr: Implementation of `NAS-FCOS: Fast Neural Architecture Search for Object
  Detection. <https://arxiv.org/abs/1906.0442>`_
  
  Args:
      backbone (:obj:`ConfigDict` or dict): The backbone config.
      neck (:obj:`ConfigDict` or dict): The neck config.
      bbox_head (:obj:`ConfigDict` or dict): The bbox head config.
      train_cfg (:obj:`ConfigDict` or dict, optional): The training config
          of NASFCOS. Defaults to None.
      test_cfg (:obj:`ConfigDict` or dict, optional): The testing config
          of NASFCOS. Defaults to None.
      data_preprocessor (:obj:`ConfigDict` or dict, optional): Config of
          :class:`DetDataPreprocessor` to process the input data.
          Defaults to None.
      init_cfg (:obj:`ConfigDict` or list[:obj:`ConfigDict`] or dict or
          list[dict], optional): Initialization config dict.
          Defaults to None.
class_docstr_tok: ["Implementation","of","`","NAS-FCOS",":","Fast","Neural","Architecture","Search","for","Object","Detection",".","<","https",":","\/\/arxiv.org\/abs\/1906.0442",">","`","_","Args",":","backbone","(",":","obj",":","`","ConfigDict","`","or","dict",")",":","The","backbone","config",".","neck","(",":","obj",":","`","ConfigDict","`","or","dict",")",":","The","neck","config",".","bbox_head","(",":","obj",":","`","ConfigDict","`","or","dict",")",":","The","bbox","head","config",".","train_cfg","(",":","obj",":","`","ConfigDict","`","or","dict",",","optional",")",":","The","training","config","of","NASFCOS",".","Defaults","to","None",".","test_cfg","(",":","obj",":","`","ConfigDict","`","or","dict",",","optional",")",":","The","testing","config","of","NASFCOS",".","Defaults","to","None",".","data_preprocessor","(",":","obj",":","`","ConfigDict","`","or","dict",",","optional",")",":","Config","of",":","class",":","`","DetDataPreprocessor","`","to","process","the","input","data",".","Defaults","to","None",".","init_cfg","(",":","obj",":","`","ConfigDict","`","or","list","[",":","obj",":","`","ConfigDict","`","]","or","dict","or","list","[","dict","]",",","optional",")",":","Initialization","config","dict",".","Defaults","to","None","."]
code: def __init__(
      self,
      backbone: ConfigType,
      neck: ConfigType,
      bbox_head: ConfigType,
      train_cfg: OptConfigType = None,
      test_cfg: OptConfigType = None,
      data_preprocessor: OptConfigType = None,
      init_cfg: OptMultiConfig = None,
  ) -> None:
      super().__init__(
          backbone=backbone,
          neck=neck,
          bbox_head=bbox_head,
          train_cfg=train_cfg,
          test_cfg=test_cfg,
          data_preprocessor=data_preprocessor,
          init_cfg=init_cfg,
      )
  
imports: from mmdet.registry import MODELS
  from mmdet.utils import ConfigType, OptConfigType, OptMultiConfig
  from .single_stage import SingleStageDetector
label_desc: Use image node_id 1 to create a new NASFCOS object from inherited base classes: SingleStageDetector with example: obj = NASFCOS(backbone, neck, bbox_head, train_cfg, test_cfg, data_preprocessor, init_cfg)