parameters: (self, model, data, sess, evaluation)
docstring: :param model:
          :type model: Model
          :param data:
          :type data: Data
          :type evaluation: Evaluation
function: def start(self, model, data, sess, evaluation):
          """
  
          :param model:
          :type model: Model
          :param data:
          :type data: Data
          :type evaluation: Evaluation
          """
          raise NotImplementedError()
function_tokens: def start ( self , model , data , sess , evaluation ) : raise NotImplementedError ( )