Paper Review: Bonan (2016). Climate. ANN
· โ˜• 2 min read · โœ๏ธ Hoontaek Lee
13 April, 2019 (Bonan, ANN, Climate) Bonan, G. B. (2016). Forests, climate, and public policy: A 500-year interdisciplinary odyssey. Annual Review of Ecology, Evolution, and Systematics, 47, 97โ€“121. I anticipated that this paper explains how the results from forest-climate research have been deployed to public policy. However, this paper had its focus to forest-climate relationships, and “these relationships should be understood well to be properly applied to policy” was all about the public policy.

์„ธ์ƒ์—์„œ ๊ฐ€์žฅ ์‰ฌ์šด ๋ฒ ์ด์ฆˆํ†ต๊ณ„ํ•™ ์ž…๋ฌธ
· โ˜• 1 min read · โœ๏ธ Hoontaek Lee
์„ธ์ƒ์—์„œ ๊ฐ€์žฅ ์‰ฌ์šด ํ†ต๊ณ„ํ•™ ์ž…๋ฌธ์„ ๋ณด๊ณ  ๊ฐ™์€ ์ €์ž์˜ ๋‹ค๋ฅธ ์ฑ…๋„ ์ฝ์–ด ๋ดค๋‹ค. ๋ฒ ์ด์ฆˆํ†ต๊ณ„ํ•™ ์—ญ์‹œ ๋จธ์‹ ๋Ÿฌ๋‹์—์„œ๋„ ๋งŽ์ด ์“ฐ์ด๊ธฐ ๋•Œ๋ฌธ์—(๋‚˜์ด๋ธŒ ๋ฒ ์ด์ฆˆ) ํ•œ ๋ฒˆ ๊ด€์‹ฌ์„ ๊ฐ€์ ธ๋ณผ ๋งŒ

Writing Science
· โ˜• 1 min read · โœ๏ธ Hoontaek Lee
๊ธ€์“ฐ๊ธฐ ํ•„๋…์„œ ์„์‚ฌํ•™์œ„๋…ผ๋ฌธ ์“ฐ๋Š” ๋ฐ ์ฐธ๊ณ ํ•˜๋ ค๊ณ  ๊ตฌ์ž…ํ•œ ์ฑ… ์ค‘ ํ•˜๋‚˜. ๊ฐ™์ด ์‚ฐ ๋‹ค๋ฅธ ์ฑ…๋“ค์ด โ€œ๋…ผ๋ฌธ ์ž‘์„ฑ๋ฒ•โ€์— ๊ด€ํ•œ ์‹ค์šฉ์  ํŒ ์œ„์ฃผ์˜ ๋‚ด์šฉ์„ ๋‹ด๊ณ  ์žˆ๋‹ค๋ฉด, ์ด ์ฑ…์€ โ€œ๋…ผ๋ฌธ์ด๋ผ

์ด๊ณต๊ณ„ ์—ฐ๊ตฌ์ž๋ฅผ ์œ„ํ•œ ์˜๋ฌธ๊ณผํ•™๋…ผ๋ฌธ ์ž‘์„ฑ๋งค๋‰ด์–ผ
· โ˜• 1 min read · โœ๏ธ Hoontaek Lee
์„์‚ฌํ•™์œ„๋…ผ๋ฌธ์„ ์“ฐ๋Š” ๋ฐ ์ฐธ๊ณ ํ•˜๋ ค๊ณ  ์‚ฐ ์ฑ…. ๊ตฌ์ž… ์ „์— ๋“ค์—ฌ๋‹ค ๋ณธ ๋…ผ๋ฌธ ์ž‘์„ฑ๋ฒ• ๊ด€๋ จ ํ•œ๊ธ€ ์ฑ… ์ค‘์—์„œ๋Š” ๊ฐ€์žฅ ๋‚ด์šฉ์ด ์ถฉ์‹คํ•œ ๊ฒƒ ๊ฐ™๋‹ค. ๊ฒŒ๋‹ค๊ฐ€ ์ฐฐ๋ž‘์ฐฐ๋ž‘ํ•œ ์†์ง€๋กœ ์ž˜ ๋งŒ๋“ค์–ด์กŒ๋‹ค.

์ดˆ๋ณด์ž๋ฅผ ์œ„ํ•œ RStudio ๋งˆ์Šคํ„ฐ
· โ˜• 1 min read · โœ๏ธ Hoontaek Lee
RStudio๋กœ ํ•  ์ˆ˜ ์žˆ๋Š” ๋‹ค์–‘ํ•œ ์ปจํ…์ธ ๋ฅผ ์†Œ๊ฐœํ•œ๋‹ค. Git๊ณผ ์—ฐ๋™, Shiny ์•ฑ, R ๋งˆํฌ๋‹ค์šด, RStudio ์„œ๋ฒ„, ํŒจํ‚ค์ง€ ๊ฐœ๋ฐœ๊ณผ ๊ฐ™์€ ์ฃผ์ œ๋ฅผ ๋ชจ๋‘ ๋‹ค๋ฃจ๊ณ  ์žˆ๋Š” ์ฑ…์ด๊ธฐ์— ๊ธฐ๋Œ€๋ฅผ ๊ฐ€

์„ธ์ƒ์—์„œ ๊ฐ€์žฅ ์‰ฌ์šด ํ†ต๊ณ„ํ•™ ์ž…๋ฌธ
· โ˜• 1 min read · โœ๏ธ Hoontaek Lee
t๊ฒ€์ •์„ ์ดํ•ดํ•˜๋Š” ๋ฐ ํ•„์š”ํ•œ ์ง๊ด€์„ ํšจ์œจ์ ์œผ๋กœ ์‹ฌ์–ด์ฃผ๋Š” ์ฑ…. ๋Œ€์ฒด๋กœ ๋ชจ๋“  ์„ค๋ช…์ด ์นœ์ ˆํ•ด์„œ ์ค‘ํ•™์ƒ๋„ ์ดํ•ดํ•  ์ˆ˜ ์žˆ์„ ๊ฒƒ ๊ฐ™๋‹ค. ํŠนํžˆ ํ‘œ์ค€ํŽธ์ฐจ๊ฐ€ ๊ฐ€์ง€๋Š” ์˜๋ฏธ๋ฅผ ๋” ์ž˜ ์ดํ•ดํ• 

Machine Learning with R
· โ˜• 1 min read · โœ๏ธ Hoontaek Lee
R๋กœ ๋‹ค์–‘ํ•œ ๋จธ์‹  ๋Ÿฌ๋‹ ๊ธฐ๋ฒ•์„ ์ง์ ‘ ์ฒดํ—˜ํ•ด๋ณด๊ธฐ ์ข‹์€ ์ฑ…. ๊ฐ ๊ธฐ๋ฒ•์ด ์–ด๋–ค ์œ ํ˜•์˜ ๋ฌธ์ œ์— ํ™œ์šฉ๋  ์ˆ˜ ์žˆ๋Š”์ง€๋ฅผ ์ •๋ฆฌํ•œ ํ‘œ๊ฐ€ ์žˆ์–ด์„œ ์ข‹๋‹ค. ๊ฐ ๊ธฐ๋ฒ•์ด ๋™์ž‘ํ•˜๋Š” ๊ธฐ๋ณธ ์›๋ฆฌ๋„ ์ž˜ ์„ค๋ช…

Science Research Writing
· โ˜• 1 min read · โœ๏ธ Hoontaek Lee
์„์‚ฌํ•™์œ„๋…ผ๋ฌธ ์“ธ ๋•Œ ์ฐธ๊ณ ์ž๋ฃŒ๋กœ ๊ตฌ์ž…ํ•œ ์ฑ… ์ค‘ ํ•˜๋‚˜. ๋ณธ๊ฒฉ์ ์œผ๋กœ ์ฝ์€ ๊ฑด 2019๋…„ ๊ณผํ•™์›์—์„œ ์ฒซ ๋…ผ๋ฌธ ์“ธ ๋•Œ์˜€๋‹ค. ์ด ์ฑ…์€ ์‹ค์ œ ๋…ผ๋ฌธ์˜ ์„น์…˜๋ณ„๋กœ ์œ ๋‹›์ด ๋‚˜๋ˆ ์ ธ ์žˆ๊ณ , ๊ฐ ์œ 

๊ธฐ์ž์˜ ๊ธ€์“ฐ๊ธฐ
· โ˜• 1 min read · โœ๏ธ Hoontaek Lee
์ฑ…์˜ ๋ฌธ์žฅ์— ๊ตฐ๋”๋”๊ธฐ๊ฐ€ ์—†๋‹ค. ์•„์ฃผ ๊น”๋”ํ•œ ๊ธ€์„ ์“ฐ๋Š” ์›์น™์„ ๋‹ด์€ ์ฑ…์ด๋‹ค. ๋’ค์ชฝ ์ฑ… ๋‚ ๊ฐœ์— ์ข‹์€ ๊ธ€์ด ๊ฐ€์ง€๋Š” ํŠน์ง• ์ผ๊ณฑ ๊ฐ€์ง€๋ฅผ ์ •๋ฆฌํ–ˆ๋Š”๋ฐ ์ด๊ฒƒ์ด ๊ฒฐ๊ตญ ์ „์ฒด ๋‚ด์šฉ์˜ ์š”์•ฝ๋ณธ์ด

์ฑ…๋ฒŒ๋ ˆ์˜ ๊ณต๋ถ€
· โ˜• 1 min read · โœ๏ธ Hoontaek Lee
์ž‘๊ณ  ๊ฐ€๋ฒผ์šด, ๊ฐ€๋ณ๊ฒŒ ์ฝ๊ธฐ ์ข‹์€ ์ฑ…์ด๋‹ค. ์˜› ์„ฑํ˜„๋“ค์ด ์–ด๋–ค ๋…์„œ, ๊ณต๋ถ€ํ•  ๋•Œ ๊ฐ€์ง€๊ณ  ์žˆ๋˜ ์ž์„ธ๋‚˜ ํƒœ๋„๋ฅผ ์—ฟ๋ณผ ์ˆ˜ ์žˆ๋Š” ์งค๋ง‰ํ•œ ๊ธ€์„ ๋ชจ์•„์„œ ์—ฎ์—ˆ๋‹ค. ์ข‹์€ ๋ง์ด ๋งŽ์ด ์จ ์žˆ์–ด์„œ ๋ช‡

ISLR Note
· โ˜• 34 min read · โœ๏ธ Hoontaek Lee
2. Statistical Learning 2.1. What Is Statistical Learning? Y = f(X) + e ์—ฌ๊ธฐ์„œ ํ•จ์ˆ˜ f๋Š” X๊ฐ€ ๋‹ด๊ณ  ์žˆ๋Š” Y์— ๋Œ€ํ•œ systematic information์ด๋‹ค. e๋Š” f๊ฐ€ ํ‘œํ˜„ํ•˜์ง€ ๋ชปํ•˜๋Š” random error term์ด๋‹ค. e๋Š” X์— ๋…

์–ด์„œ์™€ ๋จธ์‹ ๋Ÿฌ๋‹์€ ์ฒ˜์Œ์ด์ง€
· โ˜• 2 min read · โœ๏ธ HoonTaek Lee
๋จธ์‹ ๋Ÿฌ๋‹ ์ž…๋ฌธ์šฉ ๊ฒ‰ํ•ฅ๊ธฐ –> ์—ฌ๋Ÿฌ ๋จธ์‹ ๋Ÿฌ๋‹ ๊ธฐ๋ฒ•์„ ํ›‘์–ด๋ณด๊ณ  ๊ทธ์ค‘ ๋ช‡ ๊ฐœ๋Š” ๊ฐ„๋‹จํžˆ ๊ฐœ๋…์„ ์–ป์–ด ๊ฐˆ ์ˆ˜ ์žˆ๋‹ค. ํ•˜์ง€๋งŒ ๋ˆ ์ฃผ๊ณ  ์‚ฌ๋ณด๋Š” ๊ฒƒ๋ณด๋‹ค๋Š” ๋นŒ๋ ค ์ฝ๋Š” ๊ฒŒ ์ข‹์„ ๊ฒƒ ๊ฐ™๋‹ค. ๋จธ์‹ ๋Ÿฌ๋‹

์–ด๋–ป๊ฒŒ ์งˆ๋ฌธํ•  ๊ฒƒ์ธ๊ฐ€
· โ˜• 2 min read · โœ๏ธ HoonTaek Lee
์–ด๋–ป๊ฒŒ ์–ด๋–ป๊ฒŒ ์งˆ๋ฌธํ•  ๊ฒƒ์ธ๊ฐ€ ์ธ๊ฐ€ ํ•œ ๊ถŒ์˜ ์ฑ…์„ ์ •๋ง ๊ผญ๊ผญ ์”น์–ด ๊ทธ ์˜์–‘๋ถ„์„ ์˜จ์ „ํžˆ ์ทจํ•˜๊ธฐ ์œ„ํ•ด์„œ๋Š” ๋ˆˆ์ด ์•„๋‹ˆ๋ผ ๋จธ๋ฆฟ์†์ด ํ™œ๋ฐœํžˆ ๋Œ์•„๊ฐ€์•ผ ํ•œ๋‹ค. ๋จธ๋ฆฟ์†์—์„œ๋Š” ์ฑ… ์ข…๋ฅ˜, ๊ฐœ