Update train_model.py

src/models/train_model.py

@@ -21,6 +21,9 @@ def train_model():
     model.train(train_df=train_df, eval_df=eval_df,
                 batch_size=params['batch_size'], max_epochs=params['max_epoch'],
                 use_gpu=params['use_gpu'], learning_rate=params['learning_rate'],
+                num_workers=params['num_workers'])
+
+    model.save_model(model_dir=params['model_dir'])
 
 
 if __name__ == '__main__':