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Computer Science/Data Science 17

K-means Clustering ๊ฐ„.๋‹จ.๋ช….๋ฃŒ

์•Œ๊ณ ๋ฆฌ์ฆ˜ : 1) cluster์˜ ๊ฐœ์ˆ˜ k๋ฅผ ์ง€์ • k๊ฐœ์˜ ์ดˆ๊ธฐ ํ‰๊ท ๊ฐ’ ์ง€์ • 2) ์„ ํƒœํ•œ k๊ฐœ์˜ cluster ์ค‘์‹ฌ๊ณผ ๊ฐœ๋ณ„ ๋ฐ์ดํ„ฐ ์‚ฌ์ด์˜ ๊ฑฐ๋ฆฌ ๊ณ„์‚ฐ ๊ฐœ๋ณ„ ๋ฐ์ดํ„ฐ๋Š” ๊ฐ€์žฅ ๊ฐ€๊น๊ฒŒ ์žˆ๋Š” cluster์˜ ์ค‘์‹ฌ์„ ๊ทธ ๋ฐ์ดํ„ฐ๊ฐ€ ์†Œ์†๋˜๋Š” cluster๋กœ ํ• ๋‹น 3) ํด๋Ÿฌ์Šคํ„ฐ์— ์†ํ•˜๊ฒŒ ๋œ ๋ฐ์ดํ„ฐ๋“ค์˜ ํ‰๊ท ๊ฐ’์„ ์ƒˆ๋กœ์šด ํด๋Ÿฌ์Šคํ„ฐ์˜ ์ค‘์‹ฌ์œผ๋กœ ๋‘  4) 2~3๋‹จ๊ณ„๋ฅผ ์•Œ๊ณ ๋ฆฌ์ฆ˜์ด ์ˆ˜๋ ดํ•  ๋•Œ๊นŒ์ง€ ๋ฐ˜๋ณต (ํด๋Ÿฌ์Šคํ„ฐ์˜ ์ค‘์‹ฌ์ด ๋”์ด์ƒ ๋ณ€ํ•˜์ง€ ์•Š์„ ๋•Œ๊นŒ์ง€) ์ถœ์ฒ˜ : m.blog.naver.com/PostView.nhn?blogId=samsjang&logNo=221016339218&proxyReferer=https:%2F%2Fwww.google.com%2F [30ํŽธ] k-means ํด๋Ÿฌ์Šคํ„ฐ๋ง ์šฐ๋ฆฌ๋Š” ์—ฌํƒœ๊นŒ์ง€ ๋‹ต์ด ์ด๋ฏธ ์ œ์‹œ๋˜์–ด ์žˆ๋Š” ๋ฐ์ดํ„ฐ๋ฅผ ์ด์šฉํ•˜..

๋จธ์‹ ๋Ÿฌ๋‹/AI์—์„œ ์‚ฌ์šฉ๋˜๋Š” "Ground Truth" ๋œป

๋จธ์‹ ๋Ÿฌ๋‹์— ๊ด€๋ จํ•œ ๊ธ€์„ ์ฝ๋‹ค๋ณด๋ฉด "ground-truth"๋ผ๋Š” ์šฉ์–ด๋ฅผ ๋งŽ์ด ์ ‘ํ•˜๊ฒŒ ๋œ๋‹ค. "ground-truth"๋Š” ๊ธฐ์ƒํ•™์—์„œ ์œ ๋ž˜ํ•˜์˜€์œผ๋ฉฐ, ์–ด๋Š ํ•œ ์žฅ์†Œ์—์„œ ์ˆ˜์ง‘๋œ ์ •๋ณด๋ฅผ ์˜๋ฏธํ•˜๋Š” ์šฉ์–ด๋กœ ์‚ฌ์šฉ๋˜์—ˆ๋‹ค๊ณ  ํ•œ๋‹ค. ๊ทธ๋ ‡๋‹ค๋ฉด machine learning/AI์˜ ๋ฌธ๋งฅ์—์„œ ์‚ฌ์šฉ๋˜๋Š” "ground-truth"์˜ ๋œป์€ ๋ฌด์—‡์ธ๊ฐ€. What is ground truth? Ground truth isn't true. It's an ideal expected result. It might involve hand-labeling example datapoints to collect desirable answer data for training your system. For example, a set of images mig..

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