code: def Laplacian(A):
      d = np.sum(A, axis=1) - np.diag(A)
      D = np.diag(d)
      return D - A
  
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 7 for calling a global function with example usage: Laplacian(A) and returns: unknown