class_docstr: DenStream Micro-cluster class
code: def calc_norm_cf1_cf2(self, fading_factor):
      # |CF1| and |CF2| in the paper
      sum_of_squares_cf1 = 0
      sum_of_squares_cf2 = 0
      for key in self.linear_sum.keys():
          val_ls = self.linear_sum[key]
          val_ss = self.squared_sum[key]
          sum_of_squares_cf1 += (
              fading_factor * val_ls * fading_factor * val_ls
          )
          sum_of_squares_cf2 += (
              fading_factor * val_ss * fading_factor * val_ss
          )
      # return |CF1| and |CF2|
      return math.sqrt(sum_of_squares_cf1), math.sqrt(
          sum_of_squares_cf2
      )
  
imports: from __future__ import annotations
  import copy
  import math
  from abc import ABCMeta
  from collections import defaultdict, deque
  from river import base, utils
label_desc: Use image node_id 2 for calling the DenStreamMicroCluster obj's underlying member method code with example usage: obj.calc_norm_cf1_cf2(fading_factor) and returns: math,  math