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Qwen3-4B-Instruct-2507-Code

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 ---
 library_name: transformers
-tags: []
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 ---
 library_name: transformers
+tags:
+- small-lm
+- code
+- reasoning
+- slm
+license: apache-2.0
+datasets:
+- theblackcat102/evol-codealpaca-v1
+base_model:
+- Qwen/Qwen3-4B-Instruct-2507
 ---
+# Qwen3-4B-Instruct-2507-Code
+This model is obtained by fine-tuning Qwen/Qwen3-4B-Instruct-2507 on the [evol-codealpaca-v1](https://huggingface.co/datasets/theblackcat102/evol-codealpaca-v1) train split.
+The model is used in the experiments described in https://bknyaz.github.io/blog/2026/meta-merge/.
+Single A100 was used for fine-tuning and evaluation.
+The following versions were used for train/eval:
+- python >= 3.10
+- torch               : 2.9.0+cu128
+- lm_eval             : 0.4.9.1
+- vllm                : 0.11.1
+- transformers        : 4.57.6
+- datasets            : 3.2.0
+- numpy               : 2.2.6
+## Training
+The [TRL](https://github.com/huggingface/trl) library was used with SFT/full-rank options:
+```bash
+python trl/scripts/sft.py --model_name_or_path Qwen/Qwen3-4B-Instruct-2507 --dataset_name theblackcat102/evol-codealpaca-v1 --learning_rate 2e-5 \
+--num_train_epochs 1 --per_device_train_batch_size 2 --gradient_accumulation_steps 8 --gradient_checkpointing --eos_token '<|im_end|>' --eval_strategy no \
+--completion_only_loss True --report_to wandb --output_dir /path/to/the/finetuned/model
+```
+This is by far not the most compute and performance efficient fine-tuning, but it could be a good baseline.
+The dataset was preprocessed to the conversational format:
+```python
+# trl/scripts/sft.py
+dataset = load_dataset(...)
+def preprocess_function(example):
+  return {
+  "prompt": [{"role": "user", "content": example["instruction"]}],
+  "completion": [
+      {"role": "assistant", "content": example['output']}
+  ],
+  }
+dataset = dataset.map(preprocess_function)
+```
 ## Evaluation
+Evaluation was done with lm_eval on the humaneval (instruct) benchmark:
+```bash
+python -m lm_eval --model vllm --model_args pretrained=${model},tensor_parallel_size=1,dtype=auto,gpu_memory_utilization=0.9,data_parallel_size=1 \
+ --tasks humaneval_instruct --batch_size 1 --apply_chat_template=True --confirm_run_unsafe_code --trust_remote_code
+```
 ### Results
+| Model                       | humaneval_instruct |
+|-----------------------------|--------------------|
+| Qwen3-4B-Instruct-2507      | 90.2               |
+| Qwen3-4B-Instruct-2507-Code | 76.2               |
+## License
+Please refer to the license of the original model [Qwen/Qwen3-4B-Instruct-2507](https://huggingface.co/Qwen/Qwen3-4B-Instruct-2507) and dataset [evol-codealpaca-v1](https://huggingface.co/datasets/theblackcat102/evol-codealpaca-v1).