AWSKRUG Meetup (8/5/2020)

1. Hands-On ML Chapter 5 - ์„œํฌํŠธ ๋ฒกํ„ฐ ๋จธ์‹ 

๋ฐœํ‘œ์ž: ๊น€๋‘์ง„๋‹˜

1-2. ๋ฐœํ‘œ๋ฅผ ๋“ค์œผ๋ฉฐ ์ƒˆ๋กญ๊ฒŒ ์•Œ๊ฒŒ ๋œ ์ 

์„œํฌํŠธ ๋ฒกํ„ฐ ๋จธ์‹  (SVM)

  • ์„œํฌํŠธ ๋ฒกํ„ฐ ๋จธ์‹  (SVM)์€ ๋งค์šฐ ๊ฐ•๋ ฅํ•˜๊ณ  ์„ ํ˜•์ด๋‚˜ ๋น„์„ ํ˜• ๋ถ„๋ฅ˜, ํšŒ๊ท€, ์ด์ƒ์น˜ ํƒ์ƒ‰์—๋„ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋Š” ๋‹ค๋ชฉ์  ๋จธ์‹ ๋Ÿฌ๋‹ ๋ชจ๋ธ

  • ๋จธ์‹ ๋Ÿฌ๋‹์—์„œ ๊ฐ€์žฅ ์ธ๊ธฐ ์žˆ๋Š” ๋ชจ๋ธ์— ์†ํ•˜๊ณ  ๋จธ์‹ ๋Ÿฌ๋‹์— ๊ด€์‹ฌ์žˆ๋Š” ์‚ฌ๋žŒ์ด๋ผ๋ฉด ๋ฐ˜๋“œ์‹œ ์•Œ๊ณ  ์žˆ์–ด์•ผ ํ•˜๋Š” ๋ชจ๋ธ

  • SVM์€ ํŠนํžˆ ๋ณต์žกํ•œ ๋ถ„๋ฅ˜ ๋ฌธ์ œ์— ์ž˜ ๋“ค์–ด ๋งž์œผ๋ฉฐ, ์ž‘๊ฑฐ๋‚˜ ์ค‘๊ฐ„ ํฌ๊ธฐ์˜ ๋ฐ์ดํ„ฐ์…‹์— ์ ํ•ฉํ•˜๋‹ค!

Polynomial Kernal

SVC(kernel="poly", degree=3, coef0=1, C=5)
SVC(kernel="poly", degree=10, coef0=100, C=5)
  • coef0

    • Independent term in kernel function. It is only significant in โ€˜polyโ€™ and โ€˜sigmoidโ€™

      • ๋ชจ๋ธ์ด ๋†’์€ ์ฐจ์ˆ˜์™€ ๋‚ฎ์€ ์ฐจ์ˆ˜์— ์–ผ๋งˆ๋‚˜ ์˜ํ–ฅ์„ ๋ฐ›์„์ง€ ์กฐ์ ˆํ•œ๋‹ค!

SVM ํšŒ๊ท€

  • SVM ์•Œ๊ณ ๋ฆฌ์ฆ˜์€ ์„ ํ˜•, ๋น„์„ ํ˜• ๋ถ„๋ฅ˜๋ฟ๋งŒ ์•„๋‹ˆ๋ผ ์„ ํ˜•, ๋น„์„ ํ˜• ํšŒ๊ท€์—๋„ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋‹ค

  • SVM์„ ํšŒ๊ท€์— ์ ์šฉํ•˜๋Š” ๋ฐฉ๋ฒ•์€ ๋ถ„๋ฅ˜ ๋ชฉํ‘œ์™€ ๋ฐ˜๋Œ€๋กœ ํ•˜๋Š” ๊ฒƒ!

    • SVM ํšŒ๊ท€ ๋ชฉํ‘œ :

      • ๋ถ„๋ฅ˜ : ์ผ์ •ํ•œ ๋งˆ์ง„ ์˜ค๋ฅ˜ ์•ˆ์—์„œ ๋‘ ํด๋ž˜์Šค ๊ฐ„์˜ ๋„๋กœ ํญ์ด ๊ฐ€๋Šฅํ•œ ํ•œ ์ตœ๋Œ€๊ฐ€ ๋˜๋„๋ก ํ•œ๋‹ค

        ํšŒ๊ท€ : ํšŒ๊ท€๋Š” ์ œํ•œ๋œ ๋งˆ์ง„ ์˜ค๋ฅ˜ ์•ˆ์—์„œ ๋„๋กœ ์•ˆ์— ๊ฐ€๋Šฅํ•œ ํ•œ ๋งŽ์€ ์ƒ˜ํ”Œ์ด ๋“ค์–ด๊ฐ€๋„๋ก ํ•™์Šตํ•œ๋‹ค

2. AWS ๋จธ์‹ ๋Ÿฌ๋‹ ์ŠคํŽ˜์…œ SA ๊น€๋Œ€๊ทผ๋‹˜์˜ ๋ฐ์ดํ„ฐ ๊ณผํ•™ ๊ฒฝํ—˜๋‹ด & ์‚ฝ์งˆ๊ธฐ

๋ฐœํ‘œ์ž: ๊น€๋Œ€๊ทผ๋‹˜ (AWS)

๊ฐœ์ธ์ ์ธ ์‚ฌํ•ญ / ํšŒ์‚ฌ ๋‚ด๋ถ€ ์ž๋ฃŒ์—ฌ์„œ ๋ฐœํ‘œ์ž๋ฃŒ๋ฅผ ๊ณต์œ  ๋ฐ›์ง€๋Š” ๋ชปํ–ˆ์ง€๋งŒ ์ •๋ง ์œ ์ตํ•œ ์‹œ๊ฐ„์ด์—ˆ๋‹ค!

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