add checkpoints

configs/rec/rec_icdar15_train.yml

@@ -5,8 +5,8 @@ Global:
   log_smooth_window: 20
   print_batch_step: 10
   save_model_dir: output_ic15
-  save_epoch_step: 300
-  eval_batch_step: 200
+  save_epoch_step: 3
+  eval_batch_step: 2000
   train_batch_size_per_card: 256
   test_batch_size_per_card: 256
   image_shape: [3, 32, 100]
@@ -16,7 +16,7 @@ Global:
   loss_type: ctc
   reader_yml: ./configs/rec/rec_icdar15_reader.yml
   pretrain_weights: ./pretrain_models/CRNN/best_accuracy 
-
+  checkpoints: 
 Architecture:
   function: ppocr.modeling.architectures.rec_model,RecModel