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2025/02/14 5

[AI][CatBoost] CatBoost๋กœ Wine Quality ์˜ˆ์ธกํ•˜๊ธฐ

2025.01.23 - [๊ฐœ๋ฐœ Code/์ธ๊ณต์ง€๋Šฅ A.I.] - [Python][AI] ํƒ์ƒ‰์  ๋ฐ์ดํ„ฐ ๋ถ„์„(EDA) - ์™€์ธ ํ’ˆ์งˆ ๋ฐ์ดํ„ฐ์…‹ (Wine Quality Dataset) - 12025.01.24 - [๊ฐœ๋ฐœ Code/์ธ๊ณต์ง€๋Šฅ A.I.] - [Python][AI] ํƒ์ƒ‰์  ๋ฐ์ดํ„ฐ ๋ถ„์„(EDA) - ์™€์ธ ํ’ˆ์งˆ ๋ฐ์ดํ„ฐ์…‹ (Wine Quality Dataset) - 22025.02.04 - [๊ฐœ๋ฐœ Code/์ธ๊ณต์ง€๋Šฅ A.I.] - [Python][AI] ํƒ์ƒ‰์  ๋ฐ์ดํ„ฐ ๋ถ„์„(EDA) - ์™€์ธ ํ’ˆ์งˆ ๋ฐ์ดํ„ฐ์…‹ (Wine Quality Dataset) - 32025.02.04 - [๊ฐœ๋ฐœ Code/์ธ๊ณต์ง€๋Šฅ A.I.] - [Python][AI] ํƒ์ƒ‰์  ๋ฐ์ดํ„ฐ ๋ถ„์„(EDA) - ์™€์ธ ํ’ˆ์งˆ ๋ฐ์ดํ„ฐ์…‹ (Wine Qualit..

[Learn][English] ๋ฉ”์ผ์„ ๋ณด๋‚ผ ๋•Œ ์ž์ฃผ ์“ฐ๋Š” ์˜์–ด ํ‘œํ˜„ ์ •๋ฆฌ

๋น„์ฆˆ๋‹ˆ์Šค๋‚˜ ์ผ์ƒ์—์„œ ์ด๋ฉ”์ผ์„ ๋ณด๋‚ผ ๋•Œ ์ž์—ฐ์Šค๋Ÿฝ๊ณ  ์ •์ค‘ํ•œ ์˜์–ด ํ‘œํ˜„์„ ์•„๋Š” ๊ฒƒ์ด ์ค‘์š”ํ•˜๋‹ค. ์ด๋ฉ”์ผ์„ ์“ธ ๋•Œ ์–ด๋–ค ํ‘œํ˜„์„ ์‚ฌ์šฉํ•ด์•ผ ํ• ์ง€ ๊ณ ๋ฏผ๋œ๋‹ค๋ฉด, ์ด๋ฒˆ ๊ธ€์—์„œ ์ •๋ฆฌํ•œ ํ‘œํ˜„์„ ์ฐธ๊ณ ํ•˜๊ธธ ๋ฐ”๋ž€๋‹ค.1. ์ด๋ฉ”์ผ ์‹œ์ž‘ํ•˜๊ธฐ – ์ธ์‚ฌ๋ง์ด๋ฉ”์ผ์€ ๋ณดํ†ต "Dear + ์ด๋ฆ„" ๋˜๋Š” "Hello + ์ด๋ฆ„"์œผ๋กœ ์‹œ์ž‘ํ•จ.๊ณต์‹์ ์ธ ์ด๋ฉ”์ผDear Mr. Smith, (Smith ์”จ๊ป˜)Dear Ms. Johnson, (Johnson ์”จ๊ป˜)Dear Sir or Madam, (๋‹ด๋‹น์ž๋‹˜๊ป˜ – ์ˆ˜์‹ ์ธ์„ ๋ชจ๋ฅผ ๋•Œ)To whom it may concern, (๊ด€๊ณ„์ž๋‹˜๊ป˜ – ๋งค์šฐ ํฌ๋ฉ€ํ•œ ํ‘œํ˜„)๋น„๊ต์  ์บ์ฃผ์–ผํ•œ ์ด๋ฉ”์ผHello David, (๋ฐ์ด๋น„๋“œ ์•ˆ๋…•ํ•˜์„ธ์š”.)Hi Sarah, (์‚ฌ๋ผ ์•ˆ๋…•ํ•˜์„ธ์š”.)Good morning, John. (์กด, ์ข‹์€ ์•„์นจ์ž…..

[Learn][English] "Miss" vs. "Lose" – ํ—ท๊ฐˆ๋ฆฌ๋Š” ์˜์–ด ํ‘œํ˜„ ์ •๋ฆฌ

์˜์–ด์—์„œ "miss"์™€ "lose"๋Š” ๋‘˜ ๋‹ค ์šฐ๋ฆฌ๋ง๋กœ "๋†“์น˜๋‹ค" ๋˜๋Š” "์žƒ์–ด๋ฒ„๋ฆฌ๋‹ค"๋กœ ๋ฒˆ์—ญ๋  ์ˆ˜ ์žˆ๋‹ค. ํ•˜์ง€๋งŒ ์ƒํ™ฉ์— ๋”ฐ๋ผ ์˜ฌ๋ฐ”๋ฅธ ํ‘œํ˜„์„ ์‚ฌ์šฉํ•ด์•ผ ํ•œ๋‹ค. ์ด๋ฒˆ ๊ธ€์—์„œ๋Š” ๋‘ ๋‹จ์–ด์˜ ์ฐจ์ด๋ฅผ ์‰ฝ๊ฒŒ ์ •๋ฆฌํ•ด ๋ณด์•˜๋‹ค.1. "Miss" – ‘๋†“์น˜๋‹ค’ (๊ธฐํšŒ, ์‹œ๊ฐ„, ์‚ฌ๋žŒ ๋“ฑ)"Miss"๋Š” ๋ฒ„์Šค, ๊ธฐ์ฐจ, ๋น„ํ–‰๊ธฐ ๊ฐ™์€ ๊ตํ†ต์ˆ˜๋‹จ์„ ๋†“์น˜๊ฑฐ๋‚˜, ์–ด๋–ค ๊ธฐํšŒ๋‚˜ ์ด๋ฒคํŠธ๋ฅผ ๋†“์น  ๋•Œ ์‚ฌ์šฉํ•จ."Miss"๋ฅผ ์“ฐ๋Š” ๊ฒฝ์šฐ๊ตํ†ต์ˆ˜๋‹จ์„ ๋†“์น  ๋•ŒI missed the bus. (๋‚˜๋Š” ๋ฒ„์Šค๋ฅผ ๋†“์ณค๋‹ค.)She missed her flight. (๊ทธ๋…€๋Š” ๋น„ํ–‰๊ธฐ๋ฅผ ๋†“์ณค๋‹ค.)Don’t miss the last train. (๋ง‰์ฐจ๋ฅผ ๋†“์น˜์ง€ ๋งˆ์„ธ์š”.)๊ธฐํšŒ, ํ–‰์‚ฌ, ์ˆ˜์—… ๋“ฑ์„ ๋†“์น  ๋•ŒI missed the meeting yesterday. (๋‚˜๋Š” ์–ด์ œ ํšŒ์˜๋ฅผ ๋†“..

[Python][AI] CatBoost: ๊ฐ•๋ ฅํ•œ ๊ทธ๋ž˜๋””์–ธํŠธ ๋ถ€์ŠคํŒ… ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ

1. CatBoost๋ž€?CatBoost๋Š” Yandex์—์„œ ๊ฐœ๋ฐœํ•œ ๊ทธ๋ž˜๋””์–ธํŠธ ๋ถ€์ŠคํŒ…(Gradient Boosting) ๊ธฐ๋ฐ˜ ๋จธ์‹ ๋Ÿฌ๋‹ ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ๋กœ, ์˜์‚ฌ๊ฒฐ์ • ํŠธ๋ฆฌ๋ฅผ ๊ธฐ๋ฐ˜์œผ๋กœ ํ•™์Šตํ•˜๋Š” ๋ฐฉ์‹์ด๋‹ค. ๊ณ ์„ฑ๋Šฅ ๋ฐ ๋†’์€ ์ •ํ™•๋„๋ฅผ ์ž๋ž‘ํ•˜๋ฉฐ, ์ถ”์ฒœ ์‹œ์Šคํ…œ, ๊ฒ€์ƒ‰ ์—”์ง„, ์ž์œจ ์ฃผํ–‰, ๋‚ ์”จ ์˜ˆ์ธก ๋“ฑ ๋‹ค์–‘ํ•œ ๋ถ„์•ผ์—์„œ ์‚ฌ์šฉ๋œ๋‹ค.2. CatBoost์˜ ์ฃผ์š” ํŠน์ง•1) ๋ณ„๋„ ํŒŒ๋ผ๋ฏธํ„ฐ ํŠœ๋‹ ์—†์ด๋„ ์šฐ์ˆ˜ํ•œ ์„ฑ๋Šฅ๊ธฐ๋ณธ ์„ค์ •๊ฐ’์œผ๋กœ๋„ ์ข‹์€ ์„ฑ๋Šฅ์„ ๋ฐœํœ˜ํ•จ์‚ฌ์šฉ์ž๊ฐ€ ๋ณต์žกํ•œ ํŒŒ๋ผ๋ฏธํ„ฐ ํŠœ๋‹์— ๋งŽ์€ ์‹œ๊ฐ„์„ ์†Œ๋น„ํ•˜์ง€ ์•Š์•„๋„ ๋จ2) ๋ฒ”์ฃผํ˜• ๋ฐ์ดํ„ฐ(Categorical Features) ์ง€์›์ผ๋ฐ˜์ ์ธ ๋จธ์‹ ๋Ÿฌ๋‹ ๋ชจ๋ธ์—์„œ๋Š” ๋ฒ”์ฃผํ˜• ๋ฐ์ดํ„ฐ๋ฅผ ์ˆซ์ž๋กœ ๋ณ€ํ™˜ํ•ด์•ผ ํ•˜์ง€๋งŒ, CatBoost๋Š” ์ž๋™์œผ๋กœ ๋ฒ”์ฃผํ˜• ๋ฐ์ดํ„ฐ๋ฅผ ์ฒ˜๋ฆฌํ•˜์—ฌ ๋ชจ๋ธ ์„ฑ๋Šฅ์„ ํ–ฅ์ƒ์‹œํ‚ด3) ๋น ๋ฅด๊ณ  ํ™•์žฅ ๊ฐ€๋Šฅํ•œ GPU..

[Learn][English] "Go to" / "Get to" / "Arrive at" – ํ—ท๊ฐˆ๋ฆฌ๋Š” ์ด๋™ ๊ด€๋ จ ์˜์–ด ํ‘œํ˜„ ์ •๋ฆฌ

์˜์–ด๋กœ "์–ด๋””๋กœ ๊ฐ€๋‹ค"๋ฅผ ํ‘œํ˜„ํ•  ๋•Œ "go to", "get to", "arrive at"์„ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋‹ค. ํ•˜์ง€๋งŒ ๊ฐ๊ฐ์˜ ์˜๋ฏธ์™€ ์“ฐ์ž„์ด ์กฐ๊ธˆ์”ฉ ๋‹ค๋ฅด๋ฏ€๋กœ ์ •ํ™•ํ•œ ์ฐจ์ด๋ฅผ ์•Œ๊ณ  ์‚ฌ์šฉํ•ด์•ผ ํ•œ๋‹ค. ์ด๋ฒˆ ๊ธ€์—์„œ๋Š” ์„ธ ๊ฐ€์ง€ ํ‘œํ˜„์„ ์‰ฝ๊ฒŒ ์ •๋ฆฌํ•ด ๋ณด๊ฒ ๋‹ค.1. "Go to" – ‘์–ด๋””๋กœ ๊ฐ€๋‹ค’ (๋ชฉ์ ์ง€๋ฅผ ํ–ฅํ•ด ๊ฐ€๋Š” ๊ณผ์ •)"Go to"๋Š” ์–ด๋–ค ๋ชฉ์ ์ง€๋ฅผ ํ–ฅํ•ด ๊ฐ€๋Š” ๊ณผ์ •์„ ์˜๋ฏธํ•จ. ์•„์ง ๋„์ฐฉํ•œ ๊ฒƒ์ด ์•„๋‹ˆ๋ผ, ‘๊ฐ€๋Š” ์ค‘’์ด๋ผ๋Š” ๋Š๋‚Œ์ด ์žˆ์Œ."Go to"์˜ ํŠน์ง•๋ชฉ์ ์ง€ ์•ž์— "to"๊ฐ€ ๋ถ™์Œ.ํŠน์ • ์žฅ์†Œ๋ฟ๋งŒ ์•„๋‹ˆ๋ผ ํ•™๊ต, ์ง์žฅ, ๋ณ‘์› ๋“ฑ ์ผ์ƒ์ ์ธ ๋ชฉ์ ์ง€์—๋„ ์ž์ฃผ ์‚ฌ์šฉ๋จ."go home"์ฒ˜๋Ÿผ "home" ์•ž์—๋Š” "to"๋ฅผ ์“ฐ์ง€ ์•Š์Œ.์˜ˆ๋ฌธI go to work every day. (๋‚˜๋Š” ๋งค์ผ ์ง์žฅ์— ๊ฐ„๋‹ค.)She went to the ..

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