code: def tril_to_sym(tril):
      R = np.sqrt(len(tril) * 2).astype(int)
      tril_ind = np.tril_indices(R)
      S = np.empty((R, R))
      S[tril_ind] = tril
      S[tril_ind[::-1]] = tril
      return S
  
file_path: espnet/egs/libri_css/asr1/diarization/VB_diarization.py
imports: import numexpr
  import numpy
  import scipy.linalg
  from scipy.sparse import coo_matrix
label_desc: Use image node_id 8 for calling a global function with example usage: tril_to_sym(tril) and returns: S