docstr: initialize with the necessary elements
docstr_tok: ["initialize","with","the","necessary","elements"]
code: def _initialize(self):
      """
      initialize with the necessary elements
      """
      assets_path = os.path.join(self.directory, "assets")
      gen_checkpoint_path = os.path.join(assets_path, "ernie_gen")
      ernie_cfg_path = os.path.join(assets_path, "ernie_config.json")
      with open(ernie_cfg_path, encoding="utf8") as ernie_cfg_file:
          ernie_cfg = dict(json.loads(ernie_cfg_file.read()))
      ernie_vocab_path = os.path.join(assets_path, "vocab.txt")
      with open(ernie_vocab_path, encoding="utf8") as ernie_vocab_file:
          ernie_vocab = {
              j.strip().split("\t")[0]: i
              for i, j in enumerate(ernie_vocab_file.readlines())
          }
  
      with fluid.dygraph.guard(fluid.CPUPlace()):
          with fluid.unique_name.guard():
              self.model = ErnieModelForGeneration(ernie_cfg)
              finetuned_states, _ = D.load_dygraph(gen_checkpoint_path)
              self.model.set_dict(finetuned_states)
  
      self.tokenizer = ErnieTokenizer(ernie_vocab)
      self.rev_dict = {v: k for k, v in self.tokenizer.vocab.items()}
      self.rev_dict[self.tokenizer.pad_id] = ""  # replace [PAD]
      self.rev_dict[self.tokenizer.unk_id] = ""  # replace [PAD]
      self.rev_lookup = np.vectorize(lambda i: self.rev_dict[i])
  
imports: import ast
  import json
  import paddle.fluid
  import paddlehub
  from paddlehub.module.module import runnable
  from paddlehub.module.nlp_module import DataFormatError
  from paddlehub.common.logger import logger
  from paddlehub.module.module import moduleinfo, serving
  import argparse
  import os
  import numpy
  import paddle.fluid.dygraph
  from reading_pictures_writing_poems_for_midautumn.MidAutumnPoetry.model.tokenizing_ernie import ErnieTokenizer
  from reading_pictures_writing_poems_for_midautumn.MidAutumnPoetry.model.decode import beam_search_infilling
  from reading_pictures_writing_poems_for_midautumn.MidAutumnPoetry.model.modeling_ernie_gen import ErnieModelForGeneration
label_desc: Use image node_id 1 for calling the ErnieGen obj's underlying member method code with example usage: obj._initialize() without return types