{placeholder_token} vs *s in inference

[bsun0802]

In the fine tune code, there is an assert hard code the special token as {placeholder_tokne}.

            "{placeholder_token}" in args.prompt_template
        ), "You must specify the location of placeholder token by '{placeholder_token}'"

what is the logic we use {placeholder_token} in fine-tuning, but *s in pre-train and inference

[wangyePHD]

{placeholder_token} will be replace with *s when domain-duning process