class_docstr: univariate time series model for estimation with maximum likelihood
  
  Note: This is not working yet
docstr: Score vector for Arma model
docstr_tok: ["Score","vector","for","Arma","model"]
code: def score(self, params):
      """
      Score vector for Arma model
      """
      # return None
      # print params
      jac = ndt.Jacobian(self.loglike, stepMax=1e-4)
      return jac(params)[-1]
  
file_path: statsmodels/statsmodels/tsa/mlemodel.py
imports: from statsmodels.base.model import LikelihoodModel
label_desc: Use image node_id 4 for calling the TSMLEModel obj's underlying member method code with example usage: obj.score(params) and returns: jac