code: def LoadAffinityMatrix(file):
      Matrices = dict()
      with ReadHelper(file) as reader:
          for key, np_arr in reader:
              Matrices[key] = np_arr
      return Matrices
  
file_path: espnet/egs/libri_css/asr1/diarization/spec_clust.py
imports: import argparse
  import numpy
  import scipy
  from kaldiio import ReadHelper
  from sklearn.cluster import SpectralClustering
label_desc: Use image node_id 1 for calling a global function with example usage: LoadAffinityMatrix(file) and returns: Matrices