code: def create_linear_search_space():
      from bigdl.orca.automl import hp
  
      return {
          "hidden_size": hp.choice([5, 10]),
          "lr": hp.choice([0.001, 0.003, 0.01]),
          "batch_size": hp.choice([32, 64]),
      }
  
imports: import tensorflow
  import numpy
  from unittest import TestCase
  from bigdl.orca.automl.auto_estimator import AutoEstimator
  import pytest
label_desc: Use image node_id 10 for calling a global function with example usage: create_linear_search_space() and returns: dict