parameters: (self,data_set)
docstring: return hit times  value of given data set
          :param data_set:
          :return:
docstring_summary: return hit times  value of given data set
          :param data_set:
          :return:
docstring_tokens: return hit times value of given data set : param data_set : : return :
function: def get_hit(self,data_set):
          '''
          return hit times  value of given data set
          :param data_set:
          :return:
          '''
          pass
function_tokens: def get_hit ( self , data_set ) : pass