---
license: llama3.3
datasets:
- tokyotech-llm/swallow-math
language:
- en
- ja
base_model:
- meta-llama/Llama-3.1-8B
---
# Model Card
## Model Summary
This model is a continual pre-training of [Llama-3.1-8B](https://huggingface.co/meta-llama/Llama-3.1-8B) on a mix of mathematical datasets from finemath-4+ and multilingual text datasets.
The model was trained to evaluate the performance of mathematical reasoning and problem-solving as part of the SwallowMath ablation experiments (experiment 1).
It was trained on **50 billion tokens** using a mix of 4.8% Finemath-4+, 13.1% Code, and 82% multilingual text, following the setup described in the [SwallowMath paper](https://arxiv.org/abs/2505.02881).
Training was performed using [Megatron-LM](https://github.com/NVIDIA/Megatron-LM/tree/core_r0.9.0).
## Use
### Generation
```python
# pip install -q transformers
from transformers import AutoModelForCausalLM, AutoTokenizer
model = "tokyotech-llm/"
device = "cuda" # for GPU usage or "cpu" for CPU usage
tokenizer = AutoTokenizer.from_pretrained(model)
model = AutoModelForCausalLM.from_pretrained(model).to(device)
inputs = tokenizer.encode("Solve the equation 2x + 3 = 7:", return_tensors="pt").to(device)
outputs = model.generate(inputs, max_length=100)
print(tokenizer.decode(outputs[0]))
```
## Training
### Model
- **Architecture**: Llama-3.1
- **Pretraining tokens**: 50B
- **Precision**: bfloat16
- **Sequence length**: 8,192
- **Tokenizer**: Llama-3 tokenizer
### Data
The training mix consists of:
- **Mathematical Data** (~4.84%):
- Target Math Data: 2.4B tokens
- **Code Data** (~13.12%):
- SwallowCode (Syntax, Pylint Filtered): 6.5B tokens
- **Multilingual Text** (~82.04%):
- Japanese Wikipedia: 0.84B tokens
- Japanese Swallow Corpus v2: 33.0B tokens
- Laboro-ParaCorpus: 0.22B tokens
- English Wikipedia: 1.1B tokens
- English Cosmopedia: 3.3B tokens
- English DCLM: 2.2B tokens
Details are in the paper’s Appendix.
### Hardware
- GPUs: 64 NVIDIA H100 (94GB)
- Interconnect: InfiniBand NDR200
- Supercomputer: TSUBAME, Institute of Science Tokyo
### Software
- Megatron-LM (version core_r0.9.0) for training
- lm-evaluation-harness for evaluation
- BigCodeBench for code evaluation
## Evaluation
The model was evaluated using the setup described in the SwallowMath paper, with the lm-evaluation-harness and BigCodeBench. Benchmarks include mathematical reasoning (GSM8K, MATH), code generation (HumanEval), and general tasks (OpenBookQA, TriviaQA, HellaSwag, SQuAD 2.0, XWINO, MMLU, BBH).
Results are reported for checkpoints at 10B, 20B, 30B, 40B, and 50B tokens.
### Evaluation Results (Finemath-4+ experiment 1)
| Tokens (B) | OpenBookQA | TriviaQA | HellaSwag | SQuAD2.0 | XWINO | MMLU | HumanEval | GSM8K | BBH | MATH |
|------------|------------|----------|-----------|----------|-------|------|-----------|-------|-----|------|
| 10 | 0.3700 | 0.6626 | 0.5990 | 0.3350 | 0.8985 | 0.6243 | 0.3439 | 0.4685 | 0.6057 | 0.1760 |
| 20 | 0.3720 | 0.6536 | 0.5963 | 0.3510 | 0.9032 | 0.6261 | 0.3622 | 0.5011 | 0.5896 | 0.2080 |
| 30 | 0.3700 | 0.6574 | 0.5999 | 0.3506 | 0.8998 | 0.6253 | 0.3561 | 0.5019 | 0.5971 | 0.2260 |
| 40 | 0.3720 | 0.6577 | 0.6024 | 0.3499 | 0.9049 | 0.6312 | 0.3701 | 0.5231 | 0.6054 | 0.2260 |
| 50 | 0.3740 | 0.6608 | 0.6001 | 0.3550 | 0.9058 | 0.6329 | 0.3561 | 0.5292 | 0.6166 | 0.2400 |
## Citation
```bibtex
@misc{fujii2025rewritingpretrainingdataboosts,
title={Rewriting Pre-Training Data Boosts LLM Performance in Math and Code},
author={Kazuki Fujii and Yukito Tajima and Sakae Mizuki and Hinari Shimada and Taihei Shiotani and Koshiro Saito and Masanari Ohi and Masaki Kawamura and Taishi Nakamura and Takumi Okamoto and Shigeki Ishida and Kakeru Hattori and Youmi Ma and Hiroya Takamura and Rio Yokota and Naoaki Okazaki},
year={2025},
eprint={2505.02881},
archivePrefix={arXiv},
primaryClass={cs.LG},
url={https://arxiv.org/abs/2505.02881},
}
```