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[๋จธ์‹ ๋Ÿฌ๋‹] ๊ต์ฐจ๊ฒ€์ฆ(Cross-validation) ํ•„์š”์„ฑ ๋ฐ ์žฅ๋‹จ์ 

๐Ÿ“š ๋ชฉ์ฐจ 1. ๊ต์ฐจ๊ฒ€์ฆ ์ •์˜ 2. ๊ต์ฐจ๊ฒ€์ฆ์˜ ์žฅ๋‹จ์  3. ๊ต์ฐจ๊ฒ€์ฆ์˜ ์ข…๋ฅ˜ 3.1. Hold-out Cross-Validation 3.2. K-Fold Cross-Validation 3.3. Leave-p-Out Cross-Validation(LpOCV) 3.4. Leave-One-Out CV(LOOCV) 1. ๊ต์ฐจ๊ฒ€์ฆ ์ •์˜ ๊ต์ฐจ๊ฒ€์ฆ์ด๋ž€ ๋ชจ๋ธ ํ•™์Šต ์‹œ ๋ฐ์ดํ„ฐ๋ฅผ ํ›ˆ๋ จ์šฉ๊ณผ ๊ฒ€์ฆ์šฉ์œผ๋กœ ๊ต์ฐจํ•˜์—ฌ ์„ ํƒํ•˜๋Š” ๋ฐฉ๋ฒ•์ž…๋‹ˆ๋‹ค. ์ผ๋ฐ˜์ ์œผ๋กœ ๋งŽ์ด ์‚ฌ์šฉ๋˜๋Š” ๊ต์ฐจ๊ฒ€์ฆ ๋ฐฉ๋ฒ•๋ก ์œผ๋กœ์„œ K-Fold Cross Validataion์„ ์˜ˆ์‹œ๋กœ ์‚ดํŽด๋ณด๊ฒ ์Šต๋‹ˆ๋‹ค. K-Fold Cross Validataion์— ๋Œ€ํ•œ ์ž์„ธํ•œ ์„ค๋ช…์€ ์•„๋ž˜ '3. ๊ต์ฐจ๊ฒ€์ฆ์˜ ์ข…๋ฅ˜'์—์„œ ๋‹ค๋ฃจ๊ฒ ์Šต๋‹ˆ๋‹ค :) ์œ„ ๊ทธ๋ฆผ 1 ๊ณผ ๊ฐ™์ด ์ „์ฒด ๋ฐ์ดํ„ฐ์…‹ 5๋ถ„์˜ 1(\(20%\))์„ ํ…Œ..