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5.7 KiB

DeBERTa-v2

๊ฐœ์š”

DeBERTa ๋ชจ๋ธ์€ Pengcheng He, Xiaodong Liu, Jianfeng Gao, Weizhu Chen์ด ์ž‘์„ฑํ•œ DeBERTa: ๋ถ„๋ฆฌ๋œ ์–ดํ…์…˜์„ ํ™œ์šฉํ•œ ๋””์ฝ”๋”ฉ ๊ฐ•ํ™” BERT์ด๋ผ๋Š” ๋…ผ๋ฌธ์—์„œ ์ œ์•ˆ๋˜์—ˆ์Šต๋‹ˆ๋‹ค. ์ด ๋ชจ๋ธ์€ 2018๋…„ Google์ด ๋ฐœํ‘œํ•œ BERT ๋ชจ๋ธ๊ณผ 2019๋…„ Facebook์ด ๋ฐœํ‘œํ•œ RoBERTa ๋ชจ๋ธ์„ ๊ธฐ๋ฐ˜์œผ๋กœ ํ•ฉ๋‹ˆ๋‹ค. DeBERTa๋Š” RoBERTa์—์„œ ์‚ฌ์šฉ๋œ ๋ฐ์ดํ„ฐ์˜ ์ ˆ๋ฐ˜๋งŒ์„ ์‚ฌ์šฉํ•˜์—ฌ ๋ถ„๋ฆฌ๋œ(disentangled) ์–ดํ…์…˜๊ณผ ํ–ฅ์ƒ๋œ ๋งˆ์Šคํฌ ๋””์ฝ”๋” ํ•™์Šต์„ ํ†ตํ•ด RoBERTa๋ฅผ ๊ฐœ์„ ํ–ˆ์Šต๋‹ˆ๋‹ค.

๋…ผ๋ฌธ์˜ ์ดˆ๋ก์€ ๋‹ค์Œ๊ณผ ๊ฐ™์Šต๋‹ˆ๋‹ค:

์‚ฌ์ „ ํ•™์Šต๋œ ์‹ ๊ฒฝ๋ง ์–ธ์–ด ๋ชจ๋ธ์˜ ์ตœ๊ทผ ๋ฐœ์ „์€ ๋งŽ์€ ์ž์—ฐ์–ด ์ฒ˜๋ฆฌ(NLP) ์ž‘์—…์˜ ์„ฑ๋Šฅ์„ ํฌ๊ฒŒ ํ–ฅ์ƒ์‹œ์ผฐ์Šต๋‹ˆ๋‹ค. ๋ณธ ๋…ผ๋ฌธ์—์„œ๋Š” ๋‘ ๊ฐ€์ง€ ์ƒˆ๋กœ์šด ๊ธฐ์ˆ ์„ ์‚ฌ์šฉํ•˜์—ฌ BERT์™€ RoBERTa ๋ชจ๋ธ์„ ๊ฐœ์„ ํ•œ ์ƒˆ๋กœ์šด ๋ชจ๋ธ ๊ตฌ์กฐ์ธ DeBERTa๋ฅผ ์ œ์•ˆํ•ฉ๋‹ˆ๋‹ค. ์ฒซ ๋ฒˆ์งธ๋Š” ๋ถ„๋ฆฌ๋œ ์–ดํ…์…˜ ๋ฉ”์ปค๋‹ˆ์ฆ˜์œผ๋กœ, ๊ฐ ๋‹จ์–ด๊ฐ€ ๋‚ด์šฉ๊ณผ ์œ„์น˜๋ฅผ ๊ฐ๊ฐ ์ธ์ฝ”๋”ฉํ•˜๋Š” ๋‘ ๊ฐœ์˜ ๋ฒกํ„ฐ๋กœ ํ‘œํ˜„๋˜๋ฉฐ, ๋‹จ์–ด๋“ค ๊ฐ„์˜ ์–ดํ…์…˜ ๊ฐ€์ค‘์น˜๋Š” ๋‚ด์šฉ๊ณผ ์ƒ๋Œ€์  ์œ„์น˜์— ๋Œ€ํ•œ ๋ถ„๋ฆฌ๋œ ํ–‰๋ ฌ์„ ์‚ฌ์šฉํ•˜์—ฌ ๊ณ„์‚ฐ๋ฉ๋‹ˆ๋‹ค. ๋‘ ๋ฒˆ์งธ๋กœ, ๋ชจ๋ธ ์‚ฌ์ „ ํ•™์Šต์„ ์œ„ํ•ด ๋งˆ์Šคํ‚น๋œ ํ† ํฐ์„ ์˜ˆ์ธกํ•˜๋Š” ์ถœ๋ ฅ ์†Œํ”„ํŠธ๋งฅ์Šค ์ธต์„ ๋Œ€์ฒดํ•˜๋Š” ํ–ฅ์ƒ๋œ ๋งˆ์Šคํฌ ๋””์ฝ”๋”๊ฐ€ ์‚ฌ์šฉ๋ฉ๋‹ˆ๋‹ค. ์šฐ๋ฆฌ๋Š” ์ด ๋‘ ๊ฐ€์ง€ ๊ธฐ์ˆ ์ด ๋ชจ๋ธ ์‚ฌ์ „ ํ•™์Šต์˜ ํšจ์œจ์„ฑ๊ณผ ๋‹ค์šด์ŠคํŠธ๋ฆผ ์ž‘์—…์˜ ์„ฑ๋Šฅ์„ ํฌ๊ฒŒ ํ–ฅ์ƒ์‹œํ‚จ๋‹ค๋Š” ๊ฒƒ์„ ๋ณด์—ฌ์ค๋‹ˆ๋‹ค. RoBERTa-Large์™€ ๋น„๊ตํ–ˆ์„ ๋•Œ, ์ ˆ๋ฐ˜์˜ ํ•™์Šต ๋ฐ์ดํ„ฐ๋กœ ํ•™์Šต๋œ DeBERTa ๋ชจ๋ธ์€ ๊ด‘๋ฒ”์œ„ํ•œ NLP ์ž‘์—…์—์„œ ์ผ๊ด€๋˜๊ฒŒ ๋” ๋‚˜์€ ์„ฑ๋Šฅ์„ ๋ณด์—ฌ์ฃผ๋ฉฐ, MNLI์—์„œ +0.9%(90.2% vs 91.1%), SQuAD v2.0์—์„œ +2.3%(88.4% vs 90.7%), RACE์—์„œ +3.6%(83.2% vs 86.8%)์˜ ์„ฑ๋Šฅ ํ–ฅ์ƒ์„ ๋‹ฌ์„ฑํ–ˆ์Šต๋‹ˆ๋‹ค. DeBERTa ์ฝ”๋“œ์™€ ์‚ฌ์ „ ํ•™์Šต๋œ ๋ชจ๋ธ์€ https://github.com/microsoft/DeBERTa ์—์„œ ๊ณต๊ฐœ๋  ์˜ˆ์ •์ž…๋‹ˆ๋‹ค.

๋‹ค์Œ ์ •๋ณด๋“ค์€ ์›๋ณธ ๊ตฌํ˜„ ์ €์žฅ์†Œ์—์„œ ๋ณด์‹ค ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. DeBERTa v2๋Š” DeBERTa์˜ ๋‘๋ฒˆ์งธ ๋ชจ๋ธ์ž…๋‹ˆ๋‹ค. DeBERTa v2๋Š” SuperGLUE ๋‹จ์ผ ๋ชจ๋ธ ์ œ์ถœ์— ์‚ฌ์šฉ๋œ 1.5B ๋ชจ๋ธ์„ ํฌํ•จํ•˜๋ฉฐ, ์ธ๊ฐ„ ๊ธฐ์ค€์ (๋ฒ ์ด์Šค๋ผ์ธ) 89.8์  ๋Œ€๋น„ 89.9์ ์„ ๋‹ฌ์„ฑํ–ˆ์Šต๋‹ˆ๋‹ค. ์ €์ž์˜ ๋ธ”๋กœ๊ทธ์—์„œ ๋” ์ž์„ธํ•œ ์ •๋ณด๋ฅผ ํ™•์ธํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

v2์˜ ์ƒˆ๋กœ์šด ์ :

  • ์–ดํœ˜(Vocabulary) v2์—์„œ๋Š” ํ•™์Šต ๋ฐ์ดํ„ฐ๋กœ๋ถ€ํ„ฐ ๊ตฌ์ถ•๋œ 128K ํฌ๊ธฐ์˜ ์ƒˆ๋กœ์šด ์–ดํœ˜๋ฅผ ์‚ฌ์šฉํ•˜๋„๋ก ํ† ํฌ๋‚˜์ด์ €๊ฐ€ ๋ณ€๊ฒฝ๋˜์—ˆ์Šต๋‹ˆ๋‹ค. GPT2 ๊ธฐ๋ฐ˜ ํ† ํฌ๋‚˜์ด์ € ๋Œ€์‹ , ์ด์ œ๋Š” ์„ผํ…์Šคํ”ผ์Šค ๊ธฐ๋ฐ˜ ํ† ํฌ๋‚˜์ด์ €๋ฅผ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค.
  • nGiE[n๊ทธ๋žจ ์œ ๋„(Induced) ์ž…๋ ฅ ์ธ์ฝ”๋”ฉ] DeBERTa-v2 ๋ชจ๋ธ์€ ์ž…๋ ฅ ํ† ํฐ๋“ค์˜ ์ง€์—ญ์  ์˜์กด์„ฑ์„ ๋” ์ž˜ ํ•™์Šตํ•˜๊ธฐ ์œ„ํ•ด ์ฒซ ๋ฒˆ์งธ ํŠธ๋žœ์Šคํฌ๋จธ ์ธต๊ณผ ํ•จ๊ป˜ ์ถ”๊ฐ€์ ์ธ ํ•ฉ์„ฑ๊ณฑ ์ธต์„ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค.
  • ์–ดํ…์…˜ ์ธต์—์„œ ์œ„์น˜ ํˆฌ์˜ ํ–‰๋ ฌ๊ณผ ๋‚ด์šฉ ํˆฌ์˜ ํ–‰๋ ฌ ๊ณต์œ  ์ด์ „ ์‹คํ—˜๋“ค์„ ๊ธฐ๋ฐ˜์œผ๋กœ, ์ด๋Š” ์„ฑ๋Šฅ์— ์˜ํ–ฅ์„ ์ฃผ์ง€ ์•Š์œผ๋ฉด์„œ ๋งค๊ฐœ๋ณ€์ˆ˜๋ฅผ ์ ˆ์•ฝํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
  • ์ƒ๋Œ€์  ์œ„์น˜๋ฅผ ์ธ์ฝ”๋”ฉํ•˜๊ธฐ ์œ„ํ•œ ๋ฒ„ํ‚ท ์ ์šฉ DeBERTa-v2 ๋ชจ๋ธ์€ T5์™€ ์œ ์‚ฌํ•˜๊ฒŒ ์ƒ๋Œ€์  ์œ„์น˜๋ฅผ ์ธ์ฝ”๋”ฉํ•˜๊ธฐ ์œ„ํ•ด ๋กœ๊ทธ ๋ฒ„ํ‚ท์„ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค.
  • 900M ๋ชจ๋ธ & 1.5B ๋ชจ๋ธ 900M๊ณผ 1.5B, ๋‘ ๊ฐ€์ง€ ์ถ”๊ฐ€ ๋ชจ๋ธ ํฌ๊ธฐ๊ฐ€ ์ œ๊ณต๋˜๋ฉฐ, ์ด๋Š” ๋‹ค์šด์ŠคํŠธ๋ฆผ ์ž‘์—…์˜ ์„ฑ๋Šฅ์„ ํฌ๊ฒŒ ํ–ฅ์ƒ์‹œํ‚ต๋‹ˆ๋‹ค.

DeBERTa ๋ชจ๋ธ์˜ ํ…์„œํ”Œ๋กœ 2.0 ๊ตฌํ˜„์€ kamalkraj๊ฐ€ ๊ธฐ์—ฌํ–ˆ์Šต๋‹ˆ๋‹ค. ์›๋ณธ ์ฝ”๋“œ๋Š” ์ด๊ณณ์—์„œ ํ™•์ธํ•˜์‹ค ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.

์ž๋ฃŒ

DebertaV2Config

autodoc DebertaV2Config

DebertaV2Tokenizer

autodoc DebertaV2Tokenizer - get_special_tokens_mask - save_vocabulary

DebertaV2TokenizerFast

autodoc DebertaV2TokenizerFast

DebertaV2Model

autodoc DebertaV2Model - forward

DebertaV2PreTrainedModel

autodoc DebertaV2PreTrainedModel - forward

DebertaV2ForMaskedLM

autodoc DebertaV2ForMaskedLM - forward

DebertaV2ForSequenceClassification

autodoc DebertaV2ForSequenceClassification - forward

DebertaV2ForTokenClassification

autodoc DebertaV2ForTokenClassification - forward

DebertaV2ForQuestionAnswering

autodoc DebertaV2ForQuestionAnswering - forward

DebertaV2ForMultipleChoice

autodoc DebertaV2ForMultipleChoice - forward