์ค€์ง€๋„ํ•™์Šต 1

[Machine Learning] ์ค€์ง€๋„ํ•™์Šต (Semi-supervised learning)

์ค€์ง€๋„ํ•™์Šต (Semi-supervised learning) ๋จธ์‹ ๋Ÿฌ๋‹์˜ ํ•œ ์ข…๋ฅ˜๋กœ ์ง€๋„ํ•™์Šต๊ณผ ๋น„์ง€๋„ํ•™์Šต์˜ ๋‘ ๊ฐ€์ง€๋ฅผ ์กฐํ•ฉํ•˜๋Š” ๋ฐฉ๋ฒ• ๋‘ ๋ฐฉ๋ฒ• ์ค‘ ํ•˜๋‚˜๋ฅผ ์ด์šฉํ•˜์—ฌ ๋‹ค๋ฅธ ํ•˜๋‚˜์˜ ์„ฑ๋Šฅ์„ ํ–ฅ์ƒ์‹œํ‚ค๋Š” ๊ฒƒ์„ ๋ชฉ์ ์œผ๋กœ ํ•จ ex) ๋ถ„๋ฅ˜ : unlabled ๋ฐ์ดํ„ฐ๋ฅผ ํ™œ์šฉํ•˜์—ฌ ๋ถ„๋ฅ˜ ์„ฑ๋Šฅ ํ–ฅ์ƒ ex) ํด๋Ÿฌ์Šคํ„ฐ๋ง : ํด๋ž˜์Šค ์ •๋ณด๋กœ๋ถ€ํ„ฐ ์–ป์€ ์ •๋ณด๋ฅผ ๋ฐ”ํƒ•์œผ๋กœ ํด๋Ÿฌ์Šคํ„ฐ๋ง ์„ฑ๋Šฅ ํ–ฅ์ƒ Semi-supervised learning์€ ๋ถ„๋ฅ˜ ๋ฌธ์ œ์— ์ ์šฉ๋˜๋Š” ๊ฒฝ์šฐ๊ฐ€ ๋งŽ์Œ Classifier๋ฅผ ์ƒ์„ฑํ•˜๊ธฐ ์œ„ํ•œ labeled ๋ฐ์ดํ„ฐ๊ฐ€ ์ถฉ๋ถ„ํ•˜์ง€ ์•Š์€ ๊ฒฝ์šฐ Labeled ๋ฐ์ดํ„ฐ๋ฅผ ์–ป๊ธฐ ์œ„ํ•œ ๋น„์šฉ์ด ํฌ๊ฑฐ๋‚˜ ์–ด๋ ค์šด ๊ฒฝ์šฐ ์ค€์ง€๋„ํ•™์Šต ๊ฐ€์ •์‚ฌํ•ญ Smoothness ๊ฐ€์ • ๋‘ ๊ฐ’ x, x1 ์ด input space์—์„œ ๊ฐ€๊น๊ฒŒ ์žˆ์œผ๋ฉด ํ•ด๋‹นํ•˜๋Š” y,y1๋Š” ๊ฐ™์€ labe..