code: def from_scale(cls, gold_number, precision, recall, title):
          
          tp_count = get_numerator(recall, gold_number)
          positive_count = get_denominator(precision, tp_count)
          fp_count = positive_count - tp_count
          fn_count = gold_number - tp_count
          scale_report = cls(['tp'] * tp_count,
                             ['fp'] * fp_count,
                             ['fn'] * fn_count,
                             title)
          return scale_report
docs: deprecated, for backward compactbility
          try to use from_score