class_docstr: Global Alignment Kernel, from tslearn.
  
  Direct interface to ``tslearn.metrics.cdist_gak``.
  
  Implements the fast GAK from [1]_.
  
  Parameters
  ----------
  sigma : float, default 1.
      Bandwidth of the internal gaussian kernel used for GAK
  n_jobs : int or None, optional, default=None
      The number of jobs to run in parallel.
      ``None`` means 1 unless in a :obj:`joblib.parallel_backend` context.
      ``-1`` means using all processors. See scikit-learns'
      `Glossary <https://scikit-learn.org/stable/glossary.html#term-n-jobs>`__
      for more details.
  verbose : int, optional, default=0
      The verbosity level: if non zero, progress messages are printed.
      Above 50, the output is sent to stdout.
      The frequency of the messages increases with the verbosity level.
      If it more than 10, all iterations are reported.
  
  References
  ----------
  .. [1] M. Cuturi, "Fast global alignment kernels," ICML 2011.
docstr: Return testing parameter settings for the estimator.
  
  Parameters
  ----------
  parameter_set : str, default="default"
      Name of the set of test parameters to return, for use in tests. If no
      special parameters are defined for a value, will return `"default"` set.
      There are currently no reserved values for distance/kernel transformers.
  
  Returns
  -------
  params : dict or list of dict, default = {}
      Parameters to create testing instances of the class
      Each dict are parameters to construct an "interesting" test instance, i.e.,
      `MyClass(**params)` or `MyClass(**params[i])` creates a valid test instance.
      `create_test_instance` uses the first (or only) dictionary in `params`
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code: def get_test_params(cls, parameter_set="default"):
      """Return testing parameter settings for the estimator.
  
      Parameters
      ----------
      parameter_set : str, default="default"
          Name of the set of test parameters to return, for use in tests. If no
          special parameters are defined for a value, will return `"default"` set.
          There are currently no reserved values for distance/kernel transformers.
  
      Returns
      -------
      params : dict or list of dict, default = {}
          Parameters to create testing instances of the class
          Each dict are parameters to construct an "interesting" test instance, i.e.,
          `MyClass(**params)` or `MyClass(**params[i])` creates a valid test instance.
          `create_test_instance` uses the first (or only) dictionary in `params`
      """
      params0 = {"sigma": 0.5}
      params1 = {"sigma": 2}
  
      return [params0, params1]
  
imports: from sktime.dists_kernels.base import BasePairwiseTransformerPanel
  from sktime.dists_kernels.base.adapters import _TslearnPwTrafoAdapter
label_desc: Use image node_id 3 for calling the GAKernel obj's underlying member method code with example usage: obj.get_test_params(cls, parameter_set) and returns: list