code: def __init__(self, eval_set, epoch_freq=1):
      super(MAP_Callback, self).__init__(epoch_freq=epoch_freq)
      self.eval_set = eval_set
  
file_path: neon/examples/ssd/callbacks.py
imports: import numpy
  from neon.callbacks.callbacks import Callback
  from neon import logger
  from inference import get_boxes
  from util.voc_eval import voc_eval
  from util.util import plot_image
  import os
label_desc: Use image node_id 1 to create a new MAP_Callback object from inherited base classes: Callback with example: obj = MAP_Callback(eval_set, epoch_freq)