docstr: ...Test LinearRegression predict
          
docstr_tok: ["...","Test","LinearRegression","predict"]
code: def test_score(self):
      """...Test LinearRegression predict"""
      X_train, y_train, _, _ = self.get_train_data(
          n_samples=2000, n_features=12
      )
      learner = LinearRegression(random_state=32789, tol=1e-9)
      learner.fit(X_train, y_train)
      X_test, y_test, _, _ = self.get_train_data(
          n_samples=200, n_features=12
      )
      self.assertAlmostEqual(
          learner.score(X_test, y_test), 0.793774, places=4
      )
  
imports: import itertools
  import unittest
  from itertools import product
  import numpy
  from scipy.linalg import norm
  from tick.base.inference import InferenceTest
  from tick.linear_model import SimuLinReg, LinearRegression
  from tick.simulation import weights_sparse_gauss
label_desc: Use image node_id 15 for calling the Test obj's underlying member method code with example usage: obj.test_score() without return types