code: def get_default_parameters():
      """get default parameters"""
      params = {"model_name": "LinearRegression"}
      return params
  
file_path: nni/examples/trials/sklearn/regression/main.py
imports: import nni
  from sklearn.datasets import load_diabetes
  from sklearn.model_selection import train_test_split
  from sklearn import linear_model
  import logging
  import numpy
  from sklearn.metrics import r2_score
  from sklearn.preprocessing import StandardScaler
  from sklearn.linear_model import LinearRegression
  from sklearn.linear_model import Ridge
  from sklearn.linear_model import Lars
  from sklearn.linear_model import ARDRegression
label_desc: Use image node_id 2 for calling a global function with example usage: get_default_parameters() and returns: params