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---
base_model: unsloth/Qwen2.5-0.5B-Instruct
library_name: peft
license: mit
datasets:
- HoangHa/pensez-grpo
language:
- en
pipeline_tag: text-generation
tags:
- math
- trl
- unsloth
- grpo
- transformers
---
# Model Card for Math-RL
## Model Details
This model is a fine-tuned version of Qwen2.5-0.5B-Instruct, optimized with Group Relative Policy Optimization (GRPO) on a curated math dataset of 700 problems.
The fine-tuning process aims to enhance the model’s step-by-step reasoning ability in mathematical problem solving, improving its performance on structured reasoning tasks.
### Model Description
- **Language(s) (NLP):** English
- **License:** MIT
- **Finetuned from model:** Qwen2.5-0.5B-Instruct
- **Fine-tuning Method**: GRPO with LoRa
- **Domain**: Mathematics (problem-solving, reasoning)
- **Dataset Size**: ~700 examples
## Uses
### Direct Use
The model is intended for:
- Educational purposes: assisting students with math problems
- Research on small-scale RLHF-style fine-tuning (GRPO)
- Experiments in reasoning with small instruction-tuned models
- Serving as a lightweight math reasoning assistant in constrained environments
## Bias, Risks, and Limitations
- Small Dataset: Fine-tuned only on 700 math problems, so generalization is limited.
- Reasoning Errors: May produce incorrect or hallucinated answers. Always verify results.
- Not a Math Oracle: Should not be used in high-stakes scenarios (e.g., exams, grading, critical calculations).
- Limited Scope: Performance is strongest on problems similar to the fine-tuning dataset; outside domains may degrade.
- Language: While the base model supports multiple languages, math-specific fine-tuning was primarily English-based.
## How to Get Started with the Model
Use the code below to get started with the model.
```python
from huggingface_hub import login
from transformers import AutoTokenizer, AutoModelForCausalLM
from peft import PeftModel
login(token="")
tokenizer = AutoTokenizer.from_pretrained("unsloth/Qwen2.5-0.5B-Instruct",)
base_model = AutoModelForCausalLM.from_pretrained(
"unsloth/Qwen2.5-0.5B-Instruct",
device_map={"": 0}, token=""
)
model = PeftModel.from_pretrained(base_model,"Rustamshry/Math-RL")
question = """
Translate the graph of the function $y=\sin 2x$ along the $x$-axis to the left by $\dfrac{\pi }{6}$ units, and stretch the ordinate to twice its original length (the abscissa remains unchanged) to obtain the graph of the function $y=f(x)$. If the minimum value of the function $y=f(x)+a$ on the interval $\left[ 0,\dfrac{\pi }{2} \right]$ is $\sqrt{3}$, then $a=\boxed{\_\_\_\_\_}$.
"""
system = """
Respond in the following format:
<reasoning>
...
</reasoning>
<answer>
...
</answer>
"""
messages = [
{"role" : "system", "content" : system},
{"role" : "user", "content" : question}
]
text = tokenizer.apply_chat_template(
messages,
tokenize = False,
)
from transformers import TextStreamer
_ = model.generate(
**tokenizer(text, return_tensors = "pt").to("cuda"),
max_new_tokens = 2048,
streamer = TextStreamer(tokenizer, skip_prompt = True),
)
```
### Framework versions
- PEFT 0.15.2 |