code: def log_softmax(x):
      e_x = np.exp(x - np.max(x))
      return np.log(e_x / e_x.sum())
  
file_path: PaddleHub/modules/text/text_generation/reading_pictures_writing_poems_for_midautumn/MidAutumnPoetry/model/decode.py
imports: import re
  import numpy
  from collections import namedtuple
  import paddle.fluid
  import paddle.fluid.layers
  import paddle.fluid.dygraph
label_desc: Use image node_id 3 for calling a global function with example usage: log_softmax(x) and returns: np