add checkpoint to save parameters

deepspeech/training/trainer.py

@@ -163,7 +163,7 @@ class Trainer():
             "epoch": self.epoch,
             "lr": self.optimizer.get_lr()
         })
-        self.checkpoint.add_checkpoint(self.checkpoint_dir, self.iteration
+        self.checkpoint.save_parameters(self.checkpoint_dir, self.iteration
                                         if tag is None else tag, self.model,
                                         self.optimizer, infos)
 

deepspeech/utils/checkpoint.py

@@ -39,7 +39,7 @@ class Checkpoint():
         self.latest_n = latest_n
         self._save_all = (kbest_n == -1)
 
-    def add_checkpoint(self,
+    def save_parameters(self,
                         checkpoint_dir,
                         tag_or_iteration: Union[int, Text],
                         model: paddle.nn.Layer,