if args.checkpoint: if args.last: ckpt_path = args.dir_result + '/' + args.project_name + '/ckpts/best_{}.pth'.format(str(seed_num)) elif args.best: ckpt_path = args.dir_result + '/' + args.project_name + '/ckpts/best_{}.pth'.format(str(seed_num)) checkpoint = torch.load(ckpt_path, map_location=device) model.load_state_dict(checkpoint['model']) logger.best_auc = checkpoint['score'] start_epoch = checkpoint['epoch'] del checkpoint else: logger.best_auc = 0 start_epoch = 1

这段代码是用来加载模型训练过程中保存的 checkpoint 文件的，其中包含了模型的状态字典、当前训练的 epoch 数以及最佳的验证集 AUC 值等信息。如果在训练时设置了 `args.checkpoint` 为 True，则会加载保存的 checkpoint 文件；否则，会将 `logger.best_auc` 初始化为 0，`start_epoch` 初始化为 1。其中，`args.last` 和 `args.best` 用于指定加载最后一个 checkpoint 文件还是最佳的 checkpoint 文件。

相关问题

下面这段代码的作用是什么：def ovssc_inference( data_pickle_path: str, model_ckpt_path: str, dump_path: str = "visualization/", ): args = config_parser().parse_args( args=["--load", model_ckpt_path, "--file_path", data_pickle_path] ) with open(os.path.dirname(args.load) + "/args.pkl", "rb") as file: exp_args = pickle.load(file) for arg in vars(exp_args): if any(arg == s for s in ["device", "file_path", "load"]): continue setattr(args, arg, getattr(exp_args, arg)) args.domain_randomization = False scene_bounds = tuple(args.scene_bounds) logging.info("Preparing batch")

这段代码的作用是进行 OVSSC 推理，其中 data_pickle_path 是数据 pickle 文件的路径，model_ckpt_path 是模型的 checkpoint 文件路径，dump_path 是可视化结果的保存路径。代码中还加载了模型的参数，并设置了一些参数，最后进行了批处理。

{} Saved model to:{}".format("\u2714", args['ckpt_path']

As an AI language model, I cannot provide a specific answer without knowing the value of `args['ckpt_path']`. However, the code snippet suggests that a model has been saved to a checkpoint file path specified in `args['ckpt_path']`. The `\u2714` is a unicode character that represents a checkmark symbol, indicating that the save operation was successful.