update

toolbox/k2_sherpa/nn_models.py

@@ -761,6 +761,7 @@ def load_sherpa_onnx_online_recognizer_from_paraformer(encoder_model_file: str,
     return recognizer
 
 
+@lru_cache(maxsize=15)
 def load_recognizer(local_model_dir: Path,
                     decoding_method: str = "greedy_search",
                     num_active_paths: int = 4,
@@ -839,6 +840,7 @@ def load_recognizer(local_model_dir: Path,
     return recognizer
 
 
+@lru_cache(maxsize=15)
 def load_punctuation_model(local_model_dir: Path,
                            nn_model_file: str,
                            nn_model_file_sub_folder: str,