Data Science & ML

Deep Learning ๊ธฐ์ดˆ

ํผ์…‰ํŠธ๋ก , backpropagation, ํ™œ์„ฑํ™” ํ•จ์ˆ˜, loss functions, optimizers, batch size, epochs

24 ๋ฉด์ ‘ ์งˆ๋ฌธยท
Senior
1

์‹ ๊ฒฝ๋ง์˜ ๋งฅ๋ฝ์—์„œ ํผ์…‰ํŠธ๋ก ์ด๋ž€ ๋ฌด์—‡์ž…๋‹ˆ๊นŒ?

๋‹ต๋ณ€

ํผ์…‰ํŠธ๋ก ์€ ์ƒ๋ฌผํ•™์  ๋‰ด๋Ÿฐ์—์„œ ์˜๊ฐ์„ ๋ฐ›์€ ์‹ ๊ฒฝ๋ง์˜ ๊ธฐ๋ณธ ๋‹จ์œ„์ž…๋‹ˆ๋‹ค. ์—ฌ๋Ÿฌ ์ž…๋ ฅ์„ ๋ฐ›์•„ ๊ฐ€์ค‘์น˜๋กœ ๊ณฑํ•˜๊ณ  bias์™€ ํ•ฉ์‚ฐํ•œ ๋‹ค์Œ ํ™œ์„ฑํ™” ํ•จ์ˆ˜๋ฅผ ์ ์šฉํ•˜์—ฌ ์ถœ๋ ฅ์„ ์ƒ์„ฑํ•ฉ๋‹ˆ๋‹ค. ๋‹จ์ˆœ ํผ์…‰ํŠธ๋ก ์€ ์„ ํ˜• ๋ถ„๋ฆฌ ๊ฐ€๋Šฅํ•œ ๋ฌธ์ œ๋งŒ ํ•ด๊ฒฐํ•  ์ˆ˜ ์žˆ์–ด ๋‹ค์ธต ๋„คํŠธ์›Œํฌ์˜ ๊ฐœ๋ฐœ๋กœ ์ด์–ด์กŒ์Šต๋‹ˆ๋‹ค.

2

๋‹จ์ˆœ(๋‹จ์ผ ๊ณ„์ธต) ํผ์…‰ํŠธ๋ก ์˜ ์ฃผ์š” ํ•œ๊ณ„๋Š” ๋ฌด์—‡์ž…๋‹ˆ๊นŒ?

๋‹ต๋ณ€

๋‹จ์ˆœ ํผ์…‰ํŠธ๋ก ์€ ์„ ํ˜• ๋ถ„๋ฆฌ ๊ฐ€๋Šฅํ•œ ๋ฌธ์ œ, ์ฆ‰ ํด๋ž˜์Šค๋ฅผ ์ง์„ (๋˜๋Š” ๊ณ ์ฐจ์›์—์„œ๋Š” ์ดˆํ‰๋ฉด)์œผ๋กœ ๋ถ„๋ฆฌํ•  ์ˆ˜ ์žˆ๋Š” ๋ฌธ์ œ๋งŒ ํ•ด๊ฒฐํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์ด๋Ÿฌํ•œ ํ•œ๊ณ„๋Š” 1969๋…„ Minsky์™€ Papert๊ฐ€ XOR ๋ฌธ์ œ๋กœ ์ž…์ฆํ–ˆ์œผ๋ฉฐ, ๋‹ค์ธต ํผ์…‰ํŠธ๋ก ์ด ๋„์ž…๋  ๋•Œ๊นŒ์ง€ ์‹ ๊ฒฝ๋ง ์—ฐ๊ตฌ๋ฅผ ์ผ์‹œ์ ์œผ๋กœ ๋‘”ํ™”์‹œ์ผฐ์Šต๋‹ˆ๋‹ค.

3

์‹ ๊ฒฝ๋ง์—์„œ ํ™œ์„ฑํ™” ํ•จ์ˆ˜์˜ ์—ญํ• ์€ ๋ฌด์—‡์ž…๋‹ˆ๊นŒ?

๋‹ต๋ณ€

ํ™œ์„ฑํ™” ํ•จ์ˆ˜๋Š” ๋„คํŠธ์›Œํฌ์— ๋น„์„ ํ˜•์„ฑ์„ ๋„์ž…ํ•˜์—ฌ ์ž…๋ ฅ๊ณผ ์ถœ๋ ฅ ๊ฐ„์˜ ๋ณต์žกํ•œ ๊ด€๊ณ„๋ฅผ ํ•™์Šตํ•  ์ˆ˜ ์žˆ๋„๋ก ํ•ฉ๋‹ˆ๋‹ค. ๋น„์„ ํ˜• ํ™œ์„ฑํ™” ํ•จ์ˆ˜๊ฐ€ ์—†์œผ๋ฉด ๋‹ค์ธต ๋„คํŠธ์›Œํฌ์กฐ์ฐจ๋„ ๋‹จ์ˆœํ•œ ์„ ํ˜• ๋ณ€ํ™˜์ฒ˜๋Ÿผ ๋™์ž‘ํ•ฉ๋‹ˆ๋‹ค. ์ผ๋ฐ˜์ ์ธ ํ•จ์ˆ˜๋กœ๋Š” ReLU, sigmoid, tanh๊ฐ€ ์žˆ์œผ๋ฉฐ ๊ฐ๊ฐ ์‚ฌ์šฉ ์‚ฌ๋ก€์— ๋”ฐ๋ผ ํŠน์ • ์†์„ฑ์„ ๊ฐ€์ง‘๋‹ˆ๋‹ค.

4

ํ˜„๋Œ€ ๋„คํŠธ์›Œํฌ์˜ ์€๋‹‰์ธต์—์„œ ๊ฐ€์žฅ ์ผ๋ฐ˜์ ์œผ๋กœ ์‚ฌ์šฉ๋˜๋Š” ํ™œ์„ฑํ™” ํ•จ์ˆ˜๋Š” ๋ฌด์—‡์ž…๋‹ˆ๊นŒ?

5

์‹ ๊ฒฝ๋ง์—์„œ softmax ํ™œ์„ฑํ™” ํ•จ์ˆ˜๋Š” ์–ธ์ œ ์‚ฌ์šฉํ•ด์•ผ ํ•ฉ๋‹ˆ๊นŒ?

+21 ๋ฉด์ ‘ ์งˆ๋ฌธ

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๋‹ค์Œ ๋ฉด์ ‘์„ ์œ„ํ•ด Data Science & ML์„ ๋งˆ์Šคํ„ฐํ•˜์„ธ์š”

๋ชจ๋“  ์งˆ๋ฌธ, flashcards, ๊ธฐ์ˆ  ํ…Œ์ŠคํŠธ, ์ฝ”๋“œ ๋ฆฌ๋ทฐ ์—ฐ์Šต, ๋ฉด์ ‘ ์‹œ๋ฎฌ๋ ˆ์ดํ„ฐ์— ์ ‘๊ทผํ•˜์„ธ์š”.

๋ฌด๋ฃŒ๋กœ ์‹œ์ž‘ํ•˜๊ธฐ