class_docstr: The meta-model guiding the model learning.
  
  The word `Guiding` can be categorized into two types based on the stage of model learning
  - The definition of learning tasks:  Please refer to docs of `MetaTaskModel`
  - Controlling the learning process of models: Please refer to the docs of `MetaGuideModel`
docstr: The training process of the meta-model.
docstr_tok: ["The","training","process","of","the","meta-model","."]
code: def fit(self, *args, **kwargs):
      """
      The training process of the meta-model.
      """
  
file_path: qlib/qlib/model/meta/model.py
imports: import abc
  from typing import List
  from .dataset import MetaTaskDataset
label_desc: Use image node_id 1 for calling the MetaModel obj's underlying member method code with example usage: obj.fit() without return types