docstr: ...Test that ModelHawkesExpKernLeastSq hessian norm is
  consistent with gradient
docstr_tok: ["...","Test","that","ModelHawkesExpKernLeastSq","hessian","norm","is","consistent","with","gradient"]
code: def test_model_hawkes_loglik_hessian_norm(self):
      """...Test that ModelHawkesExpKernLeastSq hessian norm is
      consistent with gradient
      """
      self.assertLess(
          check_grad(self.model.loss, self.model.grad, self.coeffs),
          1e-5,
      )
  
file_path: tick/tick/hawkes/model/tests/model_hawkes_sumexpkern_loglik_test.py
imports: import unittest
  import numpy
  from scipy.optimize import check_grad
  from tick.hawkes.model import ModelHawkesSumExpKernLogLik
  from tick.hawkes.model.tests.model_hawkes_test_utils import hawkes_log_likelihood, hawkes_sumexp_kernel_intensities
label_desc: Use image node_id 6 for calling the Test obj's underlying member method code with example usage: obj.test_model_hawkes_loglik_hessian_norm() without return types