๐Ÿ’ป 155

[๋ธ”๋ก์ฒด์ธ] Besu : Quorum Developer Quickstart

Private Network Example - Hyperledger Besu Last update: April 22, 2021 Quorum Developer Quickstart tutorial The Quorum Developer Quickstart uses the Hyperledger Besu Docker image to run a private IBFT 2.0 network of Besu nodes managed by Docker Compose. Warning This tutorial runs a private network besu.hyperledger.org Hyperledger Besu๋Š” Quorum Developer Quickstart๋ผ๋Š” ์ดˆ๋ณด์šฉ ํ”„๋กœ๊ทธ๋žจ์„ ์ œ๊ณตํ•œ๋‹ค. ํ•ด๋‹น ํ”„๋กœ๊ทธ๋žจ์„ ์‹คํ–‰ํ•˜๋ฉด,..

[๋จธ์‹ ๋Ÿฌ๋‹] ํ”„๋กœ์ ํŠธ ๊ฐ•ํ™”: PCA, ์‹ ๊ฒฝ๋ง

PCA — how to choose the number of components? How many principal components do we need when using Principal Component Analysis? www.mikulskibartosz.name ๋‹ค์ค‘์„ ํ˜•ํšŒ๊ท€(Multiple Linear Regression) - ํŒŒ์ด์ฌ ์ฝ”๋“œ ์˜ˆ์ œ - ์•„๋ฌดํŠผ ์›Œ๋ผ๋ฐธ ํŒŒ์ด์ฌ scikit-learn์œผ๋กœ ๋‹ค์ค‘์„ ํ˜•ํšŒ๊ท€(Multiple Linear Regression) ๋ถ„์„ํ•˜๋Š” ๋ฐฉ๋ฒ•์„ ์ฝ”๋“œ ์˜ˆ์ œ์™€ ํ•จ๊ป˜ ์‚ดํŽด๋ณด์ž. hleecaster.com

๐Ÿ’ป/ML 2021.07.27

[๋ธ”๋ก์ฒด์ธ] Hyperledger Besu ํ™˜๊ฒฝ ์„ค์ •(CentOS 7)

1. ์˜ˆ์ œ ํ™˜๊ฒฝ ๊ตฌ์„ฑ : CentOS 7 VirtualBox์— Linux CentOS 7 ์„ค์น˜ (+์™ธ๋ถ€ IP ์„ค์ •๊นŒ์ง€) - ์‚ฌ์ „์ค€๋น„ 1. VitualBox ์„ค์น˜ https://www.virtualbox.org/wiki/Download_Old_Builds_5_2 Download_Old_Builds_5_2 – Oracle VM VirtualBox Download VirtualBox (Old Builds): VirtualBox 5.2 The Extension Pa.. xxsiyoung.tistory.com ํšŒ์‚ฌ์—์„œ ์‚ฌ์šฉํ•˜๊ณ  ์žˆ๋‹ค๋ฉด, ์œ„ ๊ธ€์ฒ˜๋Ÿผ Virtual Box์˜ ๋„คํŠธ์›Œํฌ ์„ค์ •์„ ๋ธŒ๋ฆฌ์ง€ ์–ด๋Œ‘ํ„ฐ๋กœ ์„ค์ • ์‹œ ๋ฌธ์ œ๊ฐ€ ์žˆ์„ ์ˆ˜ ์žˆ๋‹ค. ๋‚˜๋Š” NAT ๋„คํŠธ์›Œํฌ๋กœ ์„ค์ •ํ•˜์—ฌ ์ด์šฉํ•˜๊ธฐ๋กœ ํ–ˆ๋‹ค. Virtual Box ๋„คํŠธ์›Œํฌ ..

[๋ธ”๋ก์ฒด์ธ] ๋””์ง€ํ„ธ ์ž์‚ฐ

๋””์ง€ํ„ธ ์ž์‚ฐ - ํ•ด์‹œ๋„ท ๋””์ง€ํ„ธ ์ž์‚ฐ(Digital Asset)์€ ๋ณธ์งˆ์ ์œผ๋กœ ์ด์ง„ ํ˜•์‹(binary format)์œผ๋กœ ์กด์žฌํ•˜๋ฉฐ ์‚ฌ์šฉํ•  ๊ถŒ๋ฆฌ๊ฐ€ ์žˆ๋Š” ๊ฒƒ์„ ๋งํ•œ๋‹ค. ์‚ฌ์šฉํ•  ๊ถŒํ•œ์ด ์—†๋Š” ๋ฐ์ดํ„ฐ๋Š” ๋””์ง€ํ„ธ ์ž์‚ฐ์œผ๋กœ ๊ฐ„์ฃผํ•˜์ง€ ์•Š๋Š”๋‹ค. ๋””์ง€ํ„ธ ๋ฌธ์„œ, ๋“ค์„ wiki.hash.kr [ET๋‹จ์ƒ]๋””์ง€ํ„ธ ์ž์‚ฐ์„ ๋ฆฌ์–ผ๋ฆฌํ‹ฐ๋กœ ๋งŒ๋“œ๋Š” ๊ฒƒ์€ ๋ณด์•ˆ์ด๋‹ค ๋””์ง€ํ„ธ ์ž์‚ฐ์ด ์ ์  ๋ฆฌ์–ผ๋ฆฌํ‹ฐ๋กœ ์ธ์ •๋ฐ›๊ณ  ์žˆ๋‹ค. ์ตœ๊ทผ์— ์—ด๋ฆฐ ๋น„ํŠธ์ฝ”์ธ2021 ํ–‰์‚ฌ์—์„œ ์—˜์‚ด๋ฐ”๋„๋ฅด๋Š” ์„ธ๊ณ„ ์ตœ์ดˆ๋กœ ๋น„ํŠธ์ฝ”์ธ์„ ๋ฒ•์ •ํ†ตํ™”๋กœ ์Šน์ธํ•œ๋‹ค๊ณ  ๋ฐœํ‘œํ•˜๊ธฐ๋„ ํ–ˆ๋‹ค. ์ด๋ฏธ ๋งŽ์€ ์ „ํ†ต ๊ธˆ์œต์‚ฌ์™€ ํŽ€ www.etnews.com [๋‹จ๋…] ์šฐ๋ฆฌ์€ํ–‰๋„ ๋””์ง€ํ„ธ์ž์‚ฐ ์ปค์Šคํ„ฐ๋”” ์ง„์ถœ…ํ•ฉ์ž‘์‚ฌ ์„ค๋ฆฝ [๋‹จ๋…] ์šฐ๋ฆฌ์€ํ–‰๋„ ๋””์ง€ํ„ธ์ž์‚ฐ ์ปค์Šคํ„ฐ๋”” ์ง„์ถœ…ํ•ฉ์ž‘์‚ฌ ์„ค๋ฆฝ, ์ฝ”์ธํ”Œ๋Ÿฌ๊ทธ์™€ ํ•ฉ์ž‘๋ฒ•์ธ ์„ค๋ฆฝ ์•”ํ˜ธํ™”ํ·NFT ๋“ฑ ๋””์ง€ํ„ธ์ž์‚ฐ ์ˆ˜..

[์ฐธ๊ณ ] RabbitMQ ์กฐ์‚ฌ ์‹œ ์šฉ์–ด์ •๋ฆฌ

์ธ์Šคํ„ด์Šค ๊ฐ์ฒด ์ง€ํ–ฅ ํ”„๋กœ๊ทธ๋ž˜๋ฐ(OOP)์—์„œ ์ธ์Šคํ„ด์Šค(instance)๋Š” ํ•ด๋‹น ํด๋ž˜์Šค์˜ ๊ตฌ์กฐ๋กœ ์ปดํ“จํ„ฐ ์ €์žฅ๊ณต๊ฐ„์—์„œ ํ• ๋‹น๋œ ์‹ค์ฒด๋ฅผ ์˜๋ฏธํ•œ๋‹ค. ์—ฌ๊ธฐ์„œ ํด๋ž˜์Šค๋Š” ์†์„ฑ๊ณผ ํ–‰์œ„๋กœ ๊ตฌ์„ฑ๋œ ์ผ์ข…์˜ ์„ค๊ณ„๋„์ด๋‹ค. OOP์—์„œ ๊ฐ์ฒด๋Š” ํด๋ž˜์Šค์™€ ์ธ์Šคํ„ด์Šค๋ฅผ ํฌํ•จํ•œ ๊ฐœ๋…์ด๋‹ค. ํ˜ธ์ŠคํŒ… ํ˜ธ์ŠคํŒ…(hosting)์ด๋ž€ ์„œ๋ฒ„ ์ปดํ“จํ„ฐ์˜ ์ „์ฒด ๋˜๋Š” ์ผ์ • ๊ณต๊ฐ„์„ ์ด์šฉํ•  ์ˆ˜ ์žˆ๋„๋ก ์ž„๋Œ€ํ•ด ์ฃผ๋Š” ์„œ๋น„์Šค๋ฅผ ๋งํ•œ๋‹ค. PC ์„œ๋ฒ„๋กœ ์›น ์‚ฌ์ดํŠธ๋ฅผ ์šด์˜ํ•˜๋ ค๋ฉด 24์‹œ๊ฐ„ 365์ผ ์ผœ์•ผ ํ•˜๋‚˜ ํ˜„์‹ค์ ์œผ๋กœ ๋ถˆ๊ฐ€๋Šฅํ•˜๋ฏ€๋กœ ํ˜ธ์ŠคํŒ… ์—…์ฒด๊ฐ€ ๋ฏธ๋ฆฌ ์—ฌ๋Ÿฌ ๋Œ€์˜ ์„œ๋ฒ„๋กœ ์ด์šฉ์ž๋“ค์—๊ฒŒ ์ž„๋Œ€ํ•ด ์ฃผ๊ณ  ๊ทธ ๋Œ€๊ฐ€๋ฅผ ๋ฐ›๋Š” ์„œ๋น„์Šค๊ฐ€ ํ˜ธ์ŠคํŒ…์ด๋‹ค. ์†”๋ฃจ์…˜ ์‚ฌ์šฉ์ž ์š”๊ตฌ์— ์ ํ•ฉํ•˜๋ฉด์„œ ํŠน์ •ํ•œ ํ˜•ํƒœ์˜ ์ปดํ“จํ„ฐ ์†Œํ”„ํŠธ์›จ์–ด ํŒจํ‚ค์ง€๋‚˜ ์‘์šฉํ”„๋กœ๊ทธ๋žจ๊ณผ ์—ฐ๊ณ„๋œ ๋ฌธ์ œ๋ฅผ ์ฒ˜๋ฆฌํ•ด ์ฃผ๋Š” ํ•˜๋“œ์›จ์–ด ๋˜๋Š” ์†Œํ”„ํŠธ์›จ์–ด๋ฅผ ์˜๋ฏธํ•œ๋‹ค. ํด..

[์ฐธ๊ณ ] Polyglot?

๋‚˜๋Š” ํด๋ฆฌ๊ธ€๋ž(polyglot) ํ”„๋กœ๊ทธ๋ž˜๋จธ์ธ๊ฐ€, ์ˆ˜๋…„์ฐจ ์ž๋ฐ”๊ฐœ๋ฐœ์ž์˜ ์Šคํƒ(stack) ์ „ํ–ฅ๊ธฐ | ์ตœ๊ทผ์— ์ž„๋ฐฑ์ค€ ๋‹˜์˜ ์ฑ…, ํด๋ฆฌ๊ธ€๋ž ํ”„๋กœ๊ทธ๋ž˜๋จธ๋ฅผ ์ฝ์œผ๋ฉด์„œ ๋‹ค์‹œ๊ธˆ ๋Š๋ผ๋Š” ๊ฒŒ ๋งŽ๋‹ค. ํด๋ฆฌ๊ธ€๋ž์ด๋ผ๋Š” ๊ฒƒ์€ ์ด๋ฏธ ์ด์Šˆ๋œ์ง€ 4๋…„์ด ๋„˜์—ˆ์ง€๋งŒ (์ฑ…์„ ์‚ฐ์ง€ 2๋…„ brunch.co.kr

[RabbitMQ] RabbitMQ?

๋ฏธ๋“ค์›จ์–ด ๋ฏธ๋“ค์›จ์–ด๋Š” ์–‘ ์ชฝ์„ ์—ฐ๊ฒฐํ•˜์—ฌ ๋ฐ์ดํ„ฐ๋ฅผ ์ฃผ๊ณ  ๋ฐ›์„ ์ˆ˜ ์žˆ๋„๋ก ์ค‘๊ฐ„์—์„œ ๋งค๊ฐœ ์—ญํ• ์„ ํ•˜๋Š” ์†Œํ”„ํŠธ์›จ์–ด, ๋„คํŠธ์›Œํฌ๋ฅผ ํ†ตํ•ด์„œ ์—ฐ๊ฒฐ๋œ ์—ฌ๋Ÿฌ ๊ฐœ์˜ ์ปดํ“จํ„ฐ์— ์žˆ๋Š” ๋งŽ์€ ํ”„๋กœ์„ธ์Šค๋“ค์—๊ฒŒ ์–ด๋–ค ์„œ๋น„์Šค๋ฅผ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ๋„๋ก ์—ฐ๊ฒฐํ•ด ์ฃผ๋Š” ์†Œํ”„ํŠธ์›จ์–ด๋ฅผ ๋งํ•œ๋‹ค. 3๊ณ„์ธต ํด๋ผ์ด์–ธํŠธ/์„œ๋ฒ„ ๊ตฌ์กฐ์—์„œ ๋ฏธ๋“ค์›จ์–ด๊ฐ€ ์กด์žฌํ•œ๋‹ค. ์›น ๋ธŒ๋ผ์šฐ์ €์—์„œ ๋ฐ์ดํ„ฐ๋ฒ ์ด์Šค๋กœ๋ถ€ํ„ฐ ๋ฐ์ดํ„ฐ๋ฅผ ์ €์žฅํ•˜๊ฑฐ๋‚˜ ์ฝ์–ด์˜ฌ ์ˆ˜ ์žˆ๊ฒŒ ์ค‘๊ฐ„์— ๋ฏธ๋“ค์›จ์–ด๊ฐ€ ์กด์žฌํ•˜๊ฒŒ ๋œ๋‹ค. ๋ฉ”์„ธ์ง€ ์ง€ํ–ฅ ๋ฏธ๋“ค์›จ์–ด ๋ฉ”์‹œ์ง€ ์ง€ํ–ฅ ๋ฏธ๋“ค์›จ์–ด(Message-oriented middleware, MOM)๋Š” ์‘์šฉ ์†Œํ”„ํŠธ์›จ์–ด ๊ฐ„์˜ ๋ฐ์ดํ„ฐ ํ†ต์‹ ์„ ์œ„ํ•œ ์†Œํ”„ํŠธ์›จ์–ด์ด๋ฉฐ, ์ผ๋ฐ˜์ ์œผ๋กœ ๋น„๋™๊ธฐ ๋ฉ”์‹œ์ง€ ์ „๋‹ฌ์— ๊ธฐ์ดˆํ•œ ๊ฒƒ์„ ๊ฐ€๋ฆฌํ‚จ๋‹ค. ๋งŽ์€ ๋ฉ”์‹œ์ง€ ์ง€ํ–ฅ ๋ฏธ๋“ค์›จ์–ด๋Š” ๋ฉ”์‹œ์ง€ ํ ์‹œ์Šคํ…œ์„ ๊ธฐ๋ฐ˜์œผ๋กœ ํ•˜์ง€๋งŒ, ๊ทธ ๋ฐ–์—๋„ ๋ธŒ๋กœ๋“œ์บ์ŠคํŠธ ํ˜•์‹..

[PC] ํฌ๋งท ํ›„ ์„ค์ • ๋ฃจํ‹ด

Windows ์—…๋ฐ์ดํŠธ ์‹คํ–‰ ๋„ค์ด๋ฒ„ ์›จ์ผ ์„ค์น˜ : https://whale.naver.com/ ๊ทธ๋ž˜ํ”ฝ์นด๋“œ ๋“œ๋ผ์ด๋ฒ„ ์„ค์น˜ : https://www.nvidia.co.kr/Download/index.aspx?lang=kr PC ์นด์นด์˜คํ†ก ์„ค์น˜ : https://www.kakaocorp.com/page/service/service/KakaoTalk ๋ฐ˜๋””์ง‘ ์„ค์น˜ : https://www.bandisoft.com/bandizip/ ํŒŸํ”Œ๋ ˆ์ด์–ด ์„ค์น˜ : https://tv.kakao.com/guide/potplayer git ์„ค์น˜ : https://git-scm.com/ VS code ์„ค์น˜ : https://code.visualstudio.com/ Chocolately ์„ค์น˜ : https://community.choc..

๐Ÿ’ป/CS 2021.06.24

[PC] Windows 10 Edu ํ•™๊ต ๊ณ„์ • ์ด๋ฆ„๋ณ€๊ฒฝ

* ๋Œ€ํ•™์ƒ Windows 10 ๋ฌด๋ฃŒ ์„ค์น˜ Windows 10 event.eventservice.co.kr ๊ณ ๋ง™๊ฒŒ๋„ ํ•™๊ต์—์„œ ์œˆ๋„์šฐ 10์„ ์ง€์›ํ•ด์ค˜ ์„ค์น˜ํ–ˆ๋‹ค. ํ•™๊ต ์ด๋ฉ”์ผ๋กœ ๋œ Microsoft ๊ณ„์ •์„ ๋“ฑ๋กํ–ˆ๊ณ , ํ•ด๋‹น ๊ณ„์ •์—๋Š” ๊ณ„์ •๋ช…์ด "ํ•œ๊ธ€"๋กœ ๊ณ ์ •๋˜์–ด ์žˆ์—ˆ๋‹ค. ์ฝ”๋”ฉ์„ ํ•˜๋‹ค๋ณด๋‹ˆ ๊ฒฝ๋กœ์— ํ•œ๊ธ€์ด ๋“ค์–ด๊ฐ€ ๊ณค๋ž€ํ•œ ์ƒํ™ฉ์ด ๋งŽ์•˜๋‹ค. ๊ทธ๋ž˜์„œ ๊ณ„์ •๋ช…์„ ๋ณ€๊ฒฝํ•˜๋ ค๊ณ  ์ฐพ์•„๋ณด๋‹ˆ, ํ•™๊ต ์ฐจ์›์—์„œ ๊ณ„์ •์„ ๊ด€๋ฆฌํ•˜๊ธฐ ๋•Œ๋ฌธ์— ํ•™๊ต๋กœ ๋ฌธ์˜ํ•ด ๋ณ€๊ฒฝํ•˜๋ผ๋Š” Microsoft ์ง์›์˜ ๋‹ต๋ณ€์ด ์žˆ์—ˆ๋‹ค. ํ•™๊ต ์ •๋ณด์ฒ˜๋กœ ์ „ํ™”๋ฅผ ํ•˜๋‹ˆ ์ „ํ˜€ ๋ฐฉ๋ฒ•์„ ๋ชจ๋ฅด๋Š” ๋“ฏ ํ–ˆ๋‹ค. ๋ฐ”๊ฟ”๋“œ๋ ธ๋‹ค๊ณ  ํ–ˆ๋Š”๋ฐ, ๊ณ„์ • ๋‚ด ์ •๋ณด์— ์•„๋ฌด ๋ณ€ํ™”๊ฐ€ ์—†์—ˆ๋‹ค! ์•„๋ž˜๋Š” ๋Œ€ํ•™์ƒ ๊ณ„์ •์œผ๋กœ Windows 10 Edu๋ฅผ ์„ค์น˜ํ•˜๊ณ  ๊ณ„์ • ์ด๋ฆ„์„ ์˜๋ฌธ์œผ๋กœ ๋ฐ”๊พธ๋Š” ๊ณผ์ •์ด๋‹ค. ํ•™๊ต ์ •๋ณด์ฒ˜์—์„œ ๋ฐฉ๋ฒ•์„ ์•ˆ๋‹ค๋ฉด ..

๐Ÿ’ป/CS 2021.06.24

[์ปดํ“จํ„ฐ ๋น„์ „] Image Segmentation - Clustering

K-means Clustering ๊ฐ€์žฅ ๊ธฐ๋ณธ์ด ๋˜๋Š” K-means ํด๋Ÿฌ์Šคํ„ฐ๋ง์„ ์ด๋ฏธ์ง€๊ฐ€ ์•„๋‹Œ ์ผ๋ฐ˜์ ์ธ ๊ด€์ ์—์„œ ์‚ดํŽด๋ณด์ž. ๋จผ์ € ๋žœ๋คํ•˜๊ฒŒ ๊ธฐ์ค€์ (centeroid)์„ ๋ช‡ ๊ฐœ ์ •ํ•˜๊ณ , ๋ชจ๋“  ๋ฐ์ดํ„ฐ์— ๋Œ€ํ•˜์—ฌ ๊ฐ€์žฅ ๊ฐ€๊นŒ์šด ๊ธฐ์ค€์ ์œผ๋กœ ๋ฌถ์–ด ์ค€๋‹ค. ํ•ด๋‹น ๋ฌถ์Œ ์•ˆ์˜ ๋ฐ์ดํ„ฐ๋ฅผ ํ‰๊ท ๋‚ด์„œ centeroid๋ฅผ ๊ทธ๊ณณ์œผ๋กœ ์˜ฎ๊ธด๋‹ค. ์˜ฎ๊ธด centeroid๋ฅผ ๊ธฐ์ค€์œผ๋กœ ๋‹ค์‹œ ๋ชจ๋“  ๋ฐ์ดํ„ฐ๋ฅผ ๊ฐ€์žฅ ๊ฐ€๊นŒ์šด ๊ธฐ์ค€์ ์œผ๋กœ ๋ฌถ์–ด์ค€๋‹ค. ์ด ๊ฒƒ์„ centeroid๊ฐ€ ์›€์ง์ด์ง€ ์•Š์„ ๋•Œ ๊นŒ์ง€ ๋ฐ˜๋ณตํ•œ๋‹ค. ์ด๋ฏธ์ง€ ์„ธ๊ทธ๋ฉ˜ํ…Œ์ด์…˜์—์„œ๋Š” ์ด๋ฏธ์ง€๋ฅผ R, G, B ๋„๋ฉ”์ธ์— ์˜ฎ๊ฒจ๋†“๊ณ  ์ƒ๊ฐํ•˜๋Š” ๊ฒƒ์ด๋‹ค. ์˜ค๋ฅธ์ชฝ ๋ฐ์ดํ„ฐ ๋ถ„ํฌ์—์„œ ์ดˆ๊ธฐ centeroid๋ฅผ ๋ช‡ ๊ฐœ ์ •ํ•œ ๋’ค ์ตœ์ ์˜ centeroid๋ฅผ ์ฐพ์•„๋‚˜๊ฐ„๋‹ค. ์Šค์Šค๋กœ ์ตœ์ ์˜ ๊ฐ’์„ ํ–ฅํ•ด ๊ณ„์†ํ•ด์„œ ์—…๋ฐ์ดํŠธ ํ•ด ๋‚˜๊ฐ€๊ธฐ ๋•Œ๋ฌธ์—, ๋จธ..