class_docstr_tok: []
code: def forward(self, x, targets=None):
      f_score, f_border = self.head1(x)
      f_tvo, f_tco = self.head2(x)
  
      predicts = {}
      predicts["f_score"] = f_score
      predicts["f_border"] = f_border
      predicts["f_tvo"] = f_tvo
      predicts["f_tco"] = f_tco
      return predicts
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import math
  import paddle
  from paddle import nn
  import paddle.nn.functional
  from paddle import ParamAttr
label_desc: Use image node_id 2 for calling the SASTHead obj's underlying member method code with example usage: obj.forward(x, targets) and returns: predicts