class_docstr: Draws a learning curve with training & validation metrics
  over time as the network trains.
class_docstr_tok: ["Draws","a","learning","curve","with","training","&","validation","metrics","over","time","as","the","network","trains","."]
code: def batch_cb(self, param):
      if param.nbatch % self.frequent == 0:
          self._process_batch(param, "train")
      if self.interval_elapsed():
          self._do_update()
  
imports: import time
label_desc: Use image node_id 4 for calling the LiveLearningCurve obj's underlying member method code with example usage: obj.batch_cb(param) without return types