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---
language:
- ko
- en
license: mit
tags:
- electra
- korean
---

# Model Card for KcELECTRA: Korean comments ELECTRA
 
 
# Model Details
 
## Model Description
 
** Updates on 2022.10.08 **
 
- KcELECTRA-base-v2022 (๊ตฌ v2022-dev) ๋ชจ๋ธ ์ด๋ฆ„์ด ๋ณ€๊ฒฝ๋˜์—ˆ์Šต๋‹ˆ๋‹ค.
- ์œ„ ๋ชจ๋ธ์˜ ์„ธ๋ถ€ ์Šค์ฝ”์–ด๋ฅผ ์ถ”๊ฐ€ํ•˜์˜€์Šต๋‹ˆ๋‹ค.
- ๊ธฐ์กด KcELECTRA-base(v2021) ๋Œ€๋น„ ๋Œ€๋ถ€๋ถ„์˜ downstream task์—์„œ ~1%p ์ˆ˜์ค€์˜ ์„ฑ๋Šฅ ํ–ฅ์ƒ์ด ์žˆ์Šต๋‹ˆ๋‹ค.
 
---
 
๊ณต๊ฐœ๋œ ํ•œ๊ตญ์–ด Transformer ๊ณ„์—ด ๋ชจ๋ธ๋“ค์€ ๋Œ€๋ถ€๋ถ„ ํ•œ๊ตญ์–ด ์œ„ํ‚ค, ๋‰ด์Šค ๊ธฐ์‚ฌ, ์ฑ… ๋“ฑ ์ž˜ ์ •์ œ๋œ ๋ฐ์ดํ„ฐ๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ํ•™์Šตํ•œ ๋ชจ๋ธ์ž…๋‹ˆ๋‹ค. ํ•œํŽธ, ์‹ค์ œ๋กœ NSMC์™€ ๊ฐ™์€ User-Generated Noisy text domain ๋ฐ์ดํ„ฐ์…‹์€ ์ •์ œ๋˜์ง€ ์•Š์•˜๊ณ  ๊ตฌ์–ด์ฒด ํŠน์ง•์— ์‹ ์กฐ์–ด๊ฐ€ ๋งŽ์œผ๋ฉฐ, ์˜คํƒˆ์ž ๋“ฑ ๊ณต์‹์ ์ธ ๊ธ€์“ฐ๊ธฐ์—์„œ ๋‚˜ํƒ€๋‚˜์ง€ ์•Š๋Š” ํ‘œํ˜„๋“ค์ด ๋นˆ๋ฒˆํ•˜๊ฒŒ ๋“ฑ์žฅํ•ฉ๋‹ˆ๋‹ค.
 
KcELECTRA๋Š” ์œ„์™€ ๊ฐ™์€ ํŠน์„ฑ์˜ ๋ฐ์ดํ„ฐ์…‹์— ์ ์šฉํ•˜๊ธฐ ์œ„ํ•ด, ๋„ค์ด๋ฒ„ ๋‰ด์Šค์—์„œ ๋Œ“๊ธ€๊ณผ ๋Œ€๋Œ“๊ธ€์„ ์ˆ˜์ง‘ํ•ด, ํ† ํฌ๋‚˜์ด์ €์™€ ELECTRA๋ชจ๋ธ์„ ์ฒ˜์Œ๋ถ€ํ„ฐ ํ•™์Šตํ•œ Pretrained ELECTRA ๋ชจ๋ธ์ž…๋‹ˆ๋‹ค.
 
๊ธฐ์กด KcBERT ๋Œ€๋น„ ๋ฐ์ดํ„ฐ์…‹ ์ฆ๊ฐ€ ๋ฐ vocab ํ™•์žฅ์„ ํ†ตํ•ด ์ƒ๋‹นํ•œ ์ˆ˜์ค€์œผ๋กœ ์„ฑ๋Šฅ์ด ํ–ฅ์ƒ๋˜์—ˆ์Šต๋‹ˆ๋‹ค.
 
KcELECTRA๋Š” Huggingface์˜ Transformers ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ๋ฅผ ํ†ตํ•ด ๊ฐ„ํŽธํžˆ ๋ถˆ๋Ÿฌ์™€ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. (๋ณ„๋„์˜ ํŒŒ์ผ ๋‹ค์šด๋กœ๋“œ๊ฐ€ ํ•„์š”ํ•˜์ง€ ์•Š์Šต๋‹ˆ๋‹ค.)
 

 
 
 
- **Developed by:** Junbum Lee
- **Shared by [Optional]:** Hugging Face
- **Model type:** electra
- **Language(s) (NLP):** en
- **License:** MIT
- **Related Models:**
  - **Parent Model:** Electra
- **Resources for more information:** 
    - [GitHub Repo](https://github.com/Beomi/KcBERT-finetune )
    - [Model Space](https://huggingface.co/spaces/BeMerciless/korean_malicious_comment)
 	- [Blog Post](ttps://monologg.kr/categories/NLP/ELECTRA/)
 
# Uses
 
 
## Direct Use
 
This model can be used for the task of 
 
## Downstream Use [Optional]
 
More information needed
 
## Out-of-Scope Use
 
The model should not be used to intentionally create hostile or alienating environments for people.
 
# Bias, Risks, and Limitations
 
Significant research has explored bias and fairness issues with language models (see, e.g., [Sheng et al. (2021)](https://aclanthology.org/2021.acl-long.330.pdf) and [Bender et al. (2021)](https://dl.acm.org/doi/pdf/10.1145/3442188.3445922)). Predictions generated by the model may include disturbing and harmful stereotypes across protected classes; identity characteristics; and sensitive, social, and occupational groups.
 
 
## Recommendations
 
Users (both direct and downstream) should be made aware of the risks, biases and limitations of the model. More information needed for further recommendations.
 
 
# Training Details
 
## Training Data
 
ํ•™์Šต ๋ฐ์ดํ„ฐ๋Š” 2019.01.01 ~ 2021.03.09 ์‚ฌ์ด์— ์ž‘์„ฑ๋œ **๋Œ“๊ธ€ ๋งŽ์€ ๋‰ด์Šค/ํ˜น์€ ์ „์ฒด ๋‰ด์Šค** ๊ธฐ์‚ฌ๋“ค์˜ **๋Œ“๊ธ€๊ณผ ๋Œ€๋Œ“๊ธ€**์„ ๋ชจ๋‘ ์ˆ˜์ง‘ํ•œ ๋ฐ์ดํ„ฐ์ž…๋‹ˆ๋‹ค.
 
๋ฐ์ดํ„ฐ ์‚ฌ์ด์ฆˆ๋Š” ํ…์ŠคํŠธ๋งŒ ์ถ”์ถœ์‹œ **์•ฝ 17.3GB์ด๋ฉฐ, 1์–ต8์ฒœ๋งŒ๊ฐœ ์ด์ƒ์˜ ๋ฌธ์žฅ**์œผ๋กœ ์ด๋ค„์ ธ ์žˆ์Šต๋‹ˆ๋‹ค.
 
> KcBERT๋Š” 2019.01-2020.06์˜ ํ…์ŠคํŠธ๋กœ, ์ •์ œ ํ›„ ์•ฝ 9์ฒœ๋งŒ๊ฐœ ๋ฌธ์žฅ์œผ๋กœ ํ•™์Šต์„ ์ง„ํ–‰ํ–ˆ์Šต๋‹ˆ๋‹ค.
 
 
#### Finetune Samples
 
- NSMC with PyTorch-Lightning 1.3.0, GPU, Colab <a href="https://colab.research.google.com/drive/1Hh63kIBAiBw3Hho--BvfdUWLu-ysMFF0?usp=sharing">
  <img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/>
</a>
 
 
 
## Training Procedure
 
 
### Preprocessing
 
PLM ํ•™์Šต์„ ์œ„ํ•ด์„œ ์ „์ฒ˜๋ฆฌ๋ฅผ ์ง„ํ–‰ํ•œ ๊ณผ์ •์€ ๋‹ค์Œ๊ณผ ๊ฐ™์Šต๋‹ˆ๋‹ค.
 
1. ํ•œ๊ธ€ ๋ฐ ์˜์–ด, ํŠน์ˆ˜๋ฌธ์ž, ๊ทธ๋ฆฌ๊ณ  ์ด๋ชจ์ง€(๐Ÿฅณ)๊นŒ์ง€!
 
   ์ •๊ทœํ‘œํ˜„์‹์„ ํ†ตํ•ด ํ•œ๊ธ€, ์˜์–ด, ํŠน์ˆ˜๋ฌธ์ž๋ฅผ ํฌํ•จํ•ด Emoji๊นŒ์ง€ ํ•™์Šต ๋Œ€์ƒ์— ํฌํ•จํ–ˆ์Šต๋‹ˆ๋‹ค.
 
   ํ•œํŽธ, ํ•œ๊ธ€ ๋ฒ”์œ„๋ฅผ `ใ„ฑ-ใ…Ž๊ฐ€-ํžฃ` ์œผ๋กœ ์ง€์ •ํ•ด `ใ„ฑ-ํžฃ` ๋‚ด์˜ ํ•œ์ž๋ฅผ ์ œ์™ธํ–ˆ์Šต๋‹ˆ๋‹ค. 
 
2. ๋Œ“๊ธ€ ๋‚ด ์ค‘๋ณต ๋ฌธ์ž์—ด ์ถ•์•ฝ
 
   `ใ…‹ใ…‹ใ…‹ใ…‹ใ…‹`์™€ ๊ฐ™์ด ์ค‘๋ณต๋œ ๊ธ€์ž๋ฅผ `ใ…‹ใ…‹`์™€ ๊ฐ™์€ ๊ฒƒ์œผ๋กœ ํ•ฉ์ณค์Šต๋‹ˆ๋‹ค.
 
3. Cased Model
 
   KcBERT๋Š” ์˜๋ฌธ์— ๋Œ€ํ•ด์„œ๋Š” ๋Œ€์†Œ๋ฌธ์ž๋ฅผ ์œ ์ง€ํ•˜๋Š” Cased model์ž…๋‹ˆ๋‹ค.
 
4. ๊ธ€์ž ๋‹จ์œ„ 10๊ธ€์ž ์ดํ•˜ ์ œ๊ฑฐ
 
   10๊ธ€์ž ๋ฏธ๋งŒ์˜ ํ…์ŠคํŠธ๋Š” ๋‹จ์ผ ๋‹จ์–ด๋กœ ์ด๋ค„์ง„ ๊ฒฝ์šฐ๊ฐ€ ๋งŽ์•„ ํ•ด๋‹น ๋ถ€๋ถ„์„ ์ œ์™ธํ–ˆ์Šต๋‹ˆ๋‹ค.
 
5. ์ค‘๋ณต ์ œ๊ฑฐ
 
   ์ค‘๋ณต์ ์œผ๋กœ ์“ฐ์ธ ๋Œ“๊ธ€์„ ์ œ๊ฑฐํ•˜๊ธฐ ์œ„ํ•ด ์™„์ „ํžˆ ์ผ์น˜ํ•˜๋Š” ์ค‘๋ณต ๋Œ“๊ธ€์„ ํ•˜๋‚˜๋กœ ํ•ฉ์ณค์Šต๋‹ˆ๋‹ค.
 
6. `OOO` ์ œ๊ฑฐ
 
   ๋„ค์ด๋ฒ„ ๋Œ“๊ธ€์˜ ๊ฒฝ์šฐ, ๋น„์†์–ด๋Š” ์ž์ฒด ํ•„ํ„ฐ๋ง์„ ํ†ตํ•ด `OOO` ๋กœ ํ‘œ์‹œํ•ฉ๋‹ˆ๋‹ค. ์ด ๋ถ€๋ถ„์„ ๊ณต๋ฐฑ์œผ๋กœ ์ œ๊ฑฐํ•˜์˜€์Šต๋‹ˆ๋‹ค.
 
 
 
 
 
### Speeds, Sizes, Times
 
More information needed
 
# Evaluation
 
 
## Testing Data, Factors & Metrics
 
### Testing Data
 
#### Cleaned Data
 
- KcBERT ์™ธ ์ถ”๊ฐ€ ๋ฐ์ดํ„ฐ๋Š” ์ •๋ฆฌ ํ›„ ๊ณต๊ฐœ ์˜ˆ์ •์ž…๋‹ˆ๋‹ค.
 
 
### Factors
 
 
### Metrics
 
More information needed
## Results 
 
 
(100k step๋ณ„ Checkpoint๋ฅผ ํ†ตํ•ด ์„ฑ๋Šฅ ํ‰๊ฐ€๋ฅผ ์ง„ํ–‰ํ•˜์˜€์Šต๋‹ˆ๋‹ค. ํ•ด๋‹น ๋ถ€๋ถ„์€ `KcBERT-finetune` repo๋ฅผ ์ฐธ๊ณ ํ•ด์ฃผ์„ธ์š”.)
 
๋ชจ๋ธ ํ•™์Šต Loss๋Š” Step์— ๋”ฐ๋ผ ์ดˆ๊ธฐ 100-200k ์‚ฌ์ด์— ๊ธ‰๊ฒฉํžˆ Loss๊ฐ€ ์ค„์–ด๋“ค๋‹ค ํ•™์Šต ์ข…๋ฃŒ๊นŒ์ง€๋„ ์ง€์†์ ์œผ๋กœ loss๊ฐ€ ๊ฐ์†Œํ•˜๋Š” ๊ฒƒ์„ ๋ณผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
 
![KcELECTRA-base Pretrain Loss](https://cdn.jsdelivr.net/gh/beomi/blog-img@master/2021/04/07/image-20210407201231133.png)
 
### KcELECTRA Pretrain Step๋ณ„ Downstream task ์„ฑ๋Šฅ ๋น„๊ต
 
> ๐Ÿ’ก ์•„๋ž˜ ํ‘œ๋Š” ์ „์ฒด ckpt๊ฐ€ ์•„๋‹Œ ์ผ๋ถ€์— ๋Œ€ํ•ด์„œ๋งŒ ํ…Œ์ŠคํŠธ๋ฅผ ์ง„ํ–‰ํ•œ ๊ฒฐ๊ณผ์ž…๋‹ˆ๋‹ค.
 
![KcELECTRA Pretrain Step๋ณ„ Downstream task ์„ฑ๋Šฅ ๋น„๊ต](https://cdn.jsdelivr.net/gh/beomi/blog-img@master/2021/04/07/image-20210407215557039.png)
 
- ์œ„์™€ ๊ฐ™์ด KcBERT-base, KcBERT-large ๋Œ€๋น„ **๋ชจ๋“  ๋ฐ์ดํ„ฐ์…‹์— ๋Œ€ํ•ด** KcELECTRA-base๊ฐ€ ๋” ๋†’์€ ์„ฑ๋Šฅ์„ ๋ณด์ž…๋‹ˆ๋‹ค.
- KcELECTRA pretrain์—์„œ๋„ Train step์ด ๋Š˜์–ด๊ฐ์— ๋”ฐ๋ผ ์ ์ง„์ ์œผ๋กœ ์„ฑ๋Šฅ์ด ํ–ฅ์ƒ๋˜๋Š” ๊ฒƒ์„ ๋ณผ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
 
 
 
 \***config์˜ ์„ธํŒ…์„ ๊ทธ๋Œ€๋กœ ํ•˜์—ฌ ๋Œ๋ฆฐ ๊ฒฐ๊ณผ์ด๋ฉฐ, hyperparameter tuning์„ ์ถ”๊ฐ€์ ์œผ๋กœ ํ•  ์‹œ ๋” ์ข‹์€ ์„ฑ๋Šฅ์ด ๋‚˜์˜ฌ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.**
 
 
|                    | Size<br/>(์šฉ๋Ÿ‰) | **NSMC**<br/>(acc) | **Naver NER**<br/>(F1) | **PAWS**<br/>(acc) | **KorNLI**<br/>(acc) | **KorSTS**<br/>(spearman) | **Question Pair**<br/>(acc) | **KorQuaD (Dev)**<br/>(EM/F1) |
| :----------------- | :-------------: | :----------------: | :--------------------: | :----------------: | :------------------: | :-----------------------: | :-------------------------: | :---------------------------: |
| **KcELECTRA-base-v2022** |      475M       |     **91.97**      |         87.35          |       76.50        |        82.12         |           83.67           |          95.12          |         69.00 / 90.40         |
| **KcELECTRA-base** |      475M       |     91.71      |         86.90          |       74.80        |        81.65         |           82.65           |          **95.78**          |         70.60 / 90.11         |
| KcBERT-Base        |      417M       |       89.62        |         84.34          |       66.95        |        74.85         |           75.57           |            93.93            |         60.25 / 84.39         |
| KcBERT-Large       |      1.2G       |       90.68        |         85.53          |       70.15        |        76.99         |           77.49           |            94.06            |         62.16 / 86.64         |
| KoBERT             |      351M       |       89.63        |         86.11          |       80.65        |        79.00         |           79.64           |            93.93            |         52.81 / 80.27         |
| XLM-Roberta-Base   |      1.03G      |       89.49        |         86.26          |       82.95        |        79.92         |           79.09           |            93.53            |         64.70 / 88.94         |
| HanBERT            |      614M       |       90.16        |         87.31          |       82.40        |        80.89         |           83.33           |            94.19            |         78.74 / 92.02         |
| KoELECTRA-Base     |      423M       |       90.21        |         86.87          |       81.90        |        80.85         |           83.21           |            94.20            |         61.10 / 89.59         |
| KoELECTRA-Base-v2  |      423M       |       89.70        |         87.02          |       83.90        |        80.61         |           84.30           |            94.72            |         84.34 / 92.58         |
| KoELECTRA-Base-v3  |      423M       |       90.63        |       **88.11**        |     **84.45**      |      **82.24**       |         **85.53**         |            95.25            |       **84.83 / 93.45**       |
| DistilKoBERT       |      108M       |       88.41        |         84.13          |       62.55        |        70.55         |           73.21           |            92.48            |         54.12 / 77.80         |
 
 
 
# Model Examination
 
More information needed
 
# Environmental Impact
 
 
Carbon emissions can be estimated using the [Machine Learning Impact calculator](https://mlco2.github.io/impact#compute) presented in [Lacoste et al. (2019)](https://arxiv.org/abs/1910.09700).
 
- **Hardware Type:** TPU `v3-8`
- **Hours used:** 240 (10 days)
- **Cloud Provider:** More information needed
- **Compute Region:** More information needed
- **Carbon Emitted:** More information needed
 
# Technical Specifications [optional]
 
## Model Architecture and Objective
 
More information needed
 
## Compute Infrastructure
 
More information needed
 
### Hardware
 
TPU `v3-8` ์„ ์ด์šฉํ•ด ์•ฝ 10์ผ ํ•™์Šต์„ ์ง„ํ–‰ํ–ˆ๊ณ , ํ˜„์žฌ Huggingface์— ๊ณต๊ฐœ๋œ ๋ชจ๋ธ์€ 848k step์„ ํ•™์Šตํ•œ ๋ชจ๋ธ weight๊ฐ€ ์—…๋กœ๋“œ ๋˜์–ด์žˆ์Šต๋‹ˆ๋‹ค.
 
### Software
- `pytorch ~= 1.8.0`
- `transformers ~= 4.11.3`
- `emoji ~= 0.6.0`
- `soynlp ~= 0.0.493`
 
 
# Citation
 
 
**BibTeX:**
 ```
 
@misc{lee2021kcelectra,
  author = {Junbum Lee},
  title = {KcELECTRA: Korean comments ELECTRA},
  year = {2021},
  publisher = {GitHub},
  journal = {GitHub repository},
  howpublished = {\url{https://github.com/Beomi/KcELECTRA}}
}
 
```
๋…ผ๋ฌธ์„ ํ†ตํ•œ ์‚ฌ์šฉ ์™ธ์—๋Š” MIT ๋ผ์ด์„ผ์Šค๋ฅผ ํ‘œ๊ธฐํ•ด์ฃผ์„ธ์š”. โ˜บ๏ธ
 
# Glossary [optional]
More information needed
 
# More Information [optional]
 
 ```
๐Ÿ’ก NOTE ๐Ÿ’ก 
General Corpus๋กœ ํ•™์Šตํ•œ KoELECTRA๊ฐ€ ๋ณดํŽธ์ ์ธ task์—์„œ๋Š” ์„ฑ๋Šฅ์ด ๋” ์ž˜ ๋‚˜์˜ฌ ๊ฐ€๋Šฅ์„ฑ์ด ๋†’์Šต๋‹ˆ๋‹ค.
KcBERT/KcELECTRA๋Š” User genrated, Noisy text์— ๋Œ€ํ•ด์„œ ๋ณด๋‹ค ์ž˜ ๋™์ž‘ํ•˜๋Š” PLM์ž…๋‹ˆ๋‹ค.
```

## Acknowledgement
 
KcELECTRA Model์„ ํ•™์Šตํ•˜๋Š” GCP/TPU ํ™˜๊ฒฝ์€ [TFRC](https://www.tensorflow.org/tfrc?hl=ko) ํ”„๋กœ๊ทธ๋žจ์˜ ์ง€์›์„ ๋ฐ›์•˜์Šต๋‹ˆ๋‹ค.
 
๋ชจ๋ธ ํ•™์Šต ๊ณผ์ •์—์„œ ๋งŽ์€ ์กฐ์–ธ์„ ์ฃผ์‹  [Monologg](https://github.com/monologg/) ๋‹˜ ๊ฐ์‚ฌํ•ฉ๋‹ˆ๋‹ค :)
 
### Github Repos
 
- [KcBERT by Beomi](https://github.com/Beomi/KcBERT)
- [BERT by Google](https://github.com/google-research/bert)
- [KoBERT by SKT](https://github.com/SKTBrain/KoBERT)
- [KoELECTRA by Monologg](https://github.com/monologg/KoELECTRA/)
- [Transformers by Huggingface](https://github.com/huggingface/transformers)
- [Tokenizers by Hugginface](https://github.com/huggingface/tokenizers)
- [ELECTRA train code by KLUE](https://github.com/KLUE-benchmark/KLUE-ELECTRA)
 
 
# Model Card Authors [optional]
 
 
Junbum Lee in collaboration with Ezi Ozoani and the Hugging Face team
 
# Model Card Contact
 
More information needed
 
# How to Get Started with the Model
 
Use the code below to get started with the model.
 
<details>
<summary> Click to expand </summary>
 
```bash
pip install soynlp emoji
```
 
์•„๋ž˜ `clean` ํ•จ์ˆ˜๋ฅผ Text data์— ์‚ฌ์šฉํ•ด์ฃผ์„ธ์š”.
 
```python
import re
import emoji
from soynlp.normalizer import repeat_normalize
 
emojis = ''.join(emoji.UNICODE_EMOJI.keys())
pattern = re.compile(f'[^ .,?!/@$%~๏ผ…ยทโˆผ()\x00-\x7Fใ„ฑ-ใ…ฃ๊ฐ€-ํžฃ{emojis}]+')
url_pattern = re.compile(
    r'https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)')
 
import re
import emoji
from soynlp.normalizer import repeat_normalize
 
pattern = re.compile(f'[^ .,?!/@$%~๏ผ…ยทโˆผ()\x00-\x7Fใ„ฑ-ใ…ฃ๊ฐ€-ํžฃ]+')
url_pattern = re.compile(
    r'https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([-a-zA-Z0-9()@:%_\+.~#?&//=]*)')
 
def clean(x): 
    x = pattern.sub(' ', x)
    x = emoji.replace_emoji(x, replace='') #emoji ์‚ญ์ œ
    x = url_pattern.sub('', x)
    x = x.strip()
    x = repeat_normalize(x, num_repeats=2)
    return x
```
 
 
</details>