class_docstr: base evaluater 
class_docstr_tok: ["base","evaluater"]
docstr: featch predictions 
docstr_tok: ["featch","predictions"]
code: def run(self):
      """featch predictions"""
      features, y_true = self.sess.run(self.next_element)
      inputs = features["inputs"]
      pred = self.sess.run(
          self.pred_valid, feed_dict={self.audio_ph: inputs}
      )
      y_pred = self.postproc(pred, features=features)
      return y_pred, y_true
  
imports: import numpy
  from absl import logging
  import delta.compat
  from delta import utils
  from delta.utils.register import registers
  from delta.utils.register import import_all_modules_for_register
  from delta.serving.base_frozen_model import Evaluater
label_desc: Use image node_id 5 for calling the SpeechEvaluater obj's underlying member method code with example usage: obj.run() and returns: y_pred,  y_true