---
base_model: Qwen/Qwen3-4B-Instruct-2507
library_name: peft
tags:
- lora
- qwen3
- grpo
- anonymous-submission
---

# Anonymous Chainer GRPO Checkpoint 1

This repository contains a LoRA adapter checkpoint for the Chainer policy after the first GRPO stage checkpoint used in the paper workflow.

## Base model

- `Qwen/Qwen3-4B-Instruct-2507`

## Artifact type

- PEFT LoRA adapter
- Inference-only checkpoint export

## Notes

- This repository is provided as anonymous supplementary material for peer review.
- The checkpoint is released for verification and follow-up research use.
- The repository intentionally omits author-identifying metadata.

## Loading example

```python
from transformers import AutoModelForCausalLM, AutoTokenizer
from peft import PeftModel

base_model_id = "Qwen/Qwen3-4B-Instruct-2507"
adapter_repo_id = "Anonymous5345345/anonymous-chainer-grpo-epoch1"

tokenizer = AutoTokenizer.from_pretrained(base_model_id)
base_model = AutoModelForCausalLM.from_pretrained(base_model_id)
model = PeftModel.from_pretrained(base_model, adapter_repo_id)
```