class_docstr: LogSigmoidLoss.
      
class_docstr_tok: ["LogSigmoidLoss","."]
code: def __init__(self):
      super(LogSigmoidLoss, self).__init__()
      self.neg_label = -1
  
file_path: PGL/apps/Graph4KG/models/loss_func.py
imports: import paddle
  from paddle.nn import BCELoss, MarginRankingLoss
  from paddle.nn.functional import log_sigmoid, softmax, softplus
label_desc: Use image node_id 1 to create a new LogSigmoidLoss object from inherited base classes: object with example: obj = LogSigmoidLoss()