class_docstr: Stores all information about an utterance
code: def __init__(self, uttid, spkid, text):
      parts = uttid.strip().split("_")
      self.reco_id = "_".join(parts[1:4])
      self.start_time = float(parts[4]) / 100
      self.end_time = float(parts[5]) / 100
      self.spk_id = spkid
      self.text = text
  
file_path: espnet/egs/libri_css/asr1/local/get_perspeaker_output.py
imports: import argparse
  import itertools
  import os
  from collections import defaultdict
label_desc: Use image node_id 1 to create a new Utterance object  with example: obj = Utterance(uttid, spkid, text)