class_docstr: FCOS ARSL network, see https://arxiv.org/abs/
  
  Args:
      backbone (object): backbone instance
      neck (object): 'FPN' instance
      fcos_head (object): 'FCOSHead_ARSL' instance
      fcos_cr_loss (object): 'FCOSLossCR' instance, only used for semi-det(ssod) by ARSL
code: def get_pseudo_pred(self):
      fcos_head_outs = self.model_forward()
      pred_cls, pred_loc, pred_iou = fcos_head_outs[
          1:
      ]  # 0 is locations
      for lvl, _ in enumerate(pred_loc):
          pred_loc[lvl] = pred_loc[lvl] / self.fcos_head.fpn_stride[lvl]
  
      return [pred_cls, pred_loc, pred_iou, self.fcos_head.fpn_stride]
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import paddle
  from ppdet.core.workspace import register, create
  from .meta_arch import BaseArch
label_desc: Use image node_id 8 for calling the ARSL_FCOS obj's underlying member method code with example usage: obj.get_pseudo_pred() and returns: list