仅仅训练最后一轮对话

src/llamafactory/hparams/data_args.py

@@ -41,6 +41,10 @@ class DataArguments:
         default="data",
         metadata={"help": "Path to the folder containing the datasets."},
     )
+    train_last_turn_only: Optional[bool] = field(
+        default=False,
+        metadata={"help": "Whether or not to train the last turn only."},
+    )
     cutoff_len: int = field(
         default=1024,
         metadata={"help": "The cutoff length of the tokenized inputs in the dataset."},