---
license: cc-by-sa-4.0
datasets:
- globis-university/aozorabunko-clean
- oscar-corpus/OSCAR-2301
language:
- ja
---

# What’s this?
This is a model based on DeBERTa V3 pre-trained on Japanese resources.

The model has the following features:
- Based on the well-known DeBERTa V3 model
- Specialized for the Japanese language
- Does not use a morphological analyzer during inference
- Respects word boundaries to some extent (does not produce tokens spanning multiple words like `の都合上` or `の判定負けを喫し`)

---

日本語リソースで学習した DeBERTa V3 モデルです。

以下のような特徴を持ちます:

- 定評のある DeBERTa V3 を用いたモデル
- 日本語特化
- 推論時に形態素解析器を用いない
- 単語境界をある程度尊重する (`の都合上` や `の判定負けを喫し` のような複数語のトークンを生じさせない)

# How to use
```python
from transformers import AutoTokenizer, AutoModelForTokenClassification

model_name = 'globis-university/deberta-v3-japanese-base'
tokenizer = AutoTokenizer.from_pretrained(model_name)
model = AutoModelForTokenClassification.from_pretrained(model_name)
```

# Tokenizer
The tokenizer is trained using the method demonstrated by Kudo.

Key points include:
- No morphological analyzer needed during inference
- Tokens do not cross word boundaries
- Easy to use with Hugging Face
- Smaller vocabulary size

Although the original DeBERTa V3 is characterized by a large vocabulary size, which can result in a significant increase in the number of parameters in the embedding layer, this model adopts a smaller vocabulary size to address this.

---

工藤氏によって示された手法で学習した。

以下のことを意識している:

- 推論時の形態素解析器なし
- トークンが単語の境界を跨がない
- Hugging Faceで使いやすい
- 大きすぎない語彙数

本家の DeBERTa V3 は大きな語彙数で学習されていることに特徴があるが、反面埋め込み層のパラメータ数が大きくなりすぎることから、本モデルでは小さめの語彙数を採用している。

# Data
| Dataset Name  | Notes | File Size (with metadata) | Times |
| ------------- | ----- | ------------------------- | ---------- |
| Wikipedia     | 2023/07; WikiExtractor | 3.5GB | x2 |
| Wikipedia     | 2023/07; cl-tohoku's method | 4.8GB | x2 |
| WikiBooks     | 2023/07; cl-tohoku's method | 43MB | x2 |
| Aozora Bunko  | 2023/07; globis-university/aozorabunko-clean | 496MB | x4 |
| CC-100        | ja | 90GB | x1 |
| mC4           | ja; extracted 10% of Wikipedia-like data using DSIR | 91GB | x1 |
| OSCAR 2023    | ja; extracted 20% of Wikipedia-like data using DSIR | 26GB | x1 |

# Training parameters
- Number of devices: 8
- Batch size: 24 x 8
- Learning rate: 1.92e-4
- Maximum sequence length: 512
- Optimizer: AdamW
- Learning rate scheduler: Linear schedule with warmup
- Training steps: 1,000,000
- Warmup steps: 100,000
- Precision: Mixed (fp16)

# Evaluation
| Model | JSTS | JNLI | JSQuAD | JCQA |
| ----- | ---- | ---- | ------ | ---- |
| ≤ small | | | | |
| [izumi-lab/deberta-v2-small-japanese](https://huggingface.co/izumi-lab/deberta-v2-small-japanese) | 0.890/0.846 | 0.880 | - | 0.737 |
| [globis-university/deberta-v3-japanese-xsmall](https://huggingface.co/globis-university/deberta-v3-japanese-xsmall) | 0.916/0.880 | 0.913 | 0.869/0.938 | 0.821 |
| base | | | | |
| [cl-tohoku/bert-base-japanese-v3](https://huggingface.co/cl-tohoku/bert-base-japanese-v3) | 0.919/0.881 | 0.907 | 0.880/0.946 | 0.848 |
| [nlp-waseda/roberta-base-japanese](https://huggingface.co/nlp-waseda/roberta-base-japanese) | 0.913/0.873 | 0.895 | 0.864/0.927 | 0.840 |
| [izumi-lab/deberta-v2-base-japanese](https://huggingface.co/izumi-lab/deberta-v2-base-japanese) | 0.919/0.882 | 0.912 | - | 0.859 |
| [ku-nlp/deberta-v2-base-japanese](https://huggingface.co/ku-nlp/deberta-v2-base-japanese) | 0.922/0.886 | 0.922 | 0.899/0.951 | - |
| [ku-nlp/deberta-v3-base-japanese](https://huggingface.co/ku-nlp/deberta-v3-base-japanese) | 0.927/0.891 | 0.927 | 0.896/- | - |
| [globis-university/deberta-v3-japanese-base](https://huggingface.co/globis-university/deberta-v3-japanese-base) | 0.925/0.895 | 0.921 | 0.890/0.950 | 0.886 |
| large | | | | |
| [cl-tohoku/bert-large-japanese-v2](https://huggingface.co/cl-tohoku/bert-large-japanese-v2) | 0.926/0.893 | 0.929 | 0.893/0.956 | 0.893 |
| [roberta-large-japanese](https://huggingface.co/nlp-waseda/roberta-large-japanese) | 0.930/0.896 | 0.924 | 0.884/0.940 | 0.907 |
| [roberta-large-japanese-seq512](https://huggingface.co/nlp-waseda/roberta-large-japanese-seq512) | 0.926/0.892 | 0.926 | 0.918/0.963 | 0.891 |
| [ku-nlp/deberta-v2-large-japanese](https://huggingface.co/ku-nlp/deberta-v2-large-japanese) | 0.925/0.892 | 0.924 | 0.912/0.959 | - |
| [globis-university/deberta-v3-japanese-large](https://huggingface.co/globis-university/deberta-v3-japanese-large) | 0.928/0.896 | 0.924 | 0.896/0.956 | 0.900 |

## License
CC BY SA 4.0

## Acknowledgement
We used ABCI for computing resources.

---

計算リソースにABCIを利用させていただきました。