Loss is applied only to the final assistant output,
while intermediate reasoning (Chain-of-Thought) is masked.
1from transformers import AutoModelForCausalLM, AutoTokenizer
2from peft import PeftModel
3import torch
4
5base = "Qwen/Qwen3-4B-Instruct-2507"
6adapter = "your_id/your-repo"
7
8tokenizer = AutoTokenizer.from_pretrained(base)
9model = AutoModelForCausalLM.from_pretrained(
10 base,
11 torch_dtype=torch.float16,
12 device_map="auto",
13)
14model = PeftModel.from_pretrained(model, adapter)
This dataset contains materials licensed under both the MIT License and the Creative Commons Attribution 4.0 International License (CC BY 4.0).
MIT-licensed portions are distributed under the terms of the MIT License. A copy of the license is included in the distribution.
CC BY 4.0-licensed portions are used in accordance with the Creative Commons Attribution 4.0 International License. Proper attribution to the original authors is provided, and modifications (if any) are indicated. See
https://creativecommons.org/licenses/by/4.0/ for details.
Users are responsible for complying with all applicable license terms, including attribution requirements and preservation of license notices, as well as the base model’s original terms of use.