support https://github.com/hiyouga/LLaMA-Factory/issues/3152

src/llmtuner/data/template.py

@@ -773,3 +773,12 @@ _register_template(
     format_user=StringFormatter(slots=["<human>:{{content}}\n<bot>:"]),
     format_separator=EmptyFormatter(slots=["\n"]),
 )
+
+_register_template(
+    name="mediatek",
+    format_user=StringFormatter(slots=["[INST] {{content}} [/INST] "]),
+    format_system=StringFormatter(slots=[{"bos_token"}, "{{content}}"]),
+    default_system="You are a helpful AI assistant built by MediaTek Research. The user you are helping speaks Traditional Chinese and comes from Taiwan. ",
+    force_system=True,
+    efficient_eos=True,
+)