Leo's Garage

Date: 09/27/2024 ================= Student: Dawoon Kim Topic: Amazon staff to return to office five days a week https://breakingnewsenglish.com/2409/240919-amazon-hybrid-work-policy.html#google_vignette Amazon staff to return to office five days a weekEnglish News Lessons: Free 27-Page lesson plan / 2-page mini-lesson - Working from Home - Handouts, online activities, speed reading, dictation, m..

Date: 09/26/2024 ================= Student: Dawoon Kim Topic: Xiaomi takes 2nd spot after Samsung in August smartphone sales https://www.koreaherald.com/view.php?ud=20240920050460 Xiaomi takes 2nd spot after Samsung in August smartphone salesChinese smartphone makers are swiftly growing their presence in the global market, taking over the entry-to-mid-tier segment while creating a buzz with uniq..

Date: 09/25/2024 ================= Student: Dawoon Kim Topic: Hollywood Star Says Young Actors Aren't Big Film Fans https://engoo.com/app/daily-news/article/hollywood-star-says-young-actors-arent-big-film-fans/tEJTCGnBEe-N6M-6jE8axQ Hollywood Star Says Young Actors Aren't Big Film Fans | Engoo Daily NewsYouTube Shorts — the short videos that have become very popular on the site — are no more tha..

Date: 09/23/2024 ================= Student: Dawoon Kim Topic: UK Wants Phone Companies to Help Stop Thefts https://engoo.com/app/daily-news/article/uk-wants-phone-companies-to-help-stop-thefts/6qNqunCfEe-dtgd0ZKoaxg UK Wants Phone Companies to Help Stop Thefts | Engoo Daily NewsNews content from around the world for English learners. Updated daily for all levels, beginner to advanced!engoo.com S..

하나의 함수와 또 다른 함수를 반전 이동한 값을 곱한 다음에 구간에 대해 적분하는 수학연산자이다.컨볼루션이 필요한 이유는 아래와 같다.입력과 출력이 있는 기본 시스템에서 어떤 출력 값이 현재 입력에만 영향을 받는 것이 아니라 이전 입력의 값에도 영향을 받는다고 할 때, Convolution 연산을 사용한다.여기에는 몇 가지 성질이 있는데 LTI (Linear Time Invariant)LTI 시스템은 input에 대하여 Linear하면서 동시에 Time Invariant한 output을 출력하는 시스템을 의미한다. Linear는 선형이라는 의미이다. Input이 scaling되거나 또는 두 input의 합의 형태로 입력될 때, Output도 그와 동일하게 출력되는 것을 의미한다. Time Invarian..

어떤 함수의 근을 빠르게 구하는 방법은 어떤 방법이 있을까? 함수 g(x)가 있다고 하자.가장 쉽게 생각해보면, l, u 라고 하는 임의의 두 수에 대해서 g(l) * g(u) 이때 이 l과 u의 값을 점차 좁혀나가면 해를 찾을 수 있을 것 이다. 이러한 기법을 IVT(Intermediate Value Theorem)이라고 한다. 이 IVT 방법을 이용하여 l + u / 2 값을 r값으로 하고 l과 u를 변경해가면서 해를 찾아가는 방식을 Bisection이라고 한다. 말 그대로 l과 u에 대한 g(u)* g(l) 하지만 이 방법보다 더 빠르게 근을 찾는 방법이 있다.  바로 Newton's method이다. Newton's method의 핵심은 f'(a)가 x = a에서의 접선의 기울기라는 기하학적인 미..

Date: 09/19/2024 ================= Student: Dawoon Kim Topic: Home Depot to pay $2 million settlement for overcharging customers https://edition.cnn.com/2024/09/14/business/home-depot-to-pay-usd2-million-settlement-for-overcharging-customers-and-false-advertising/index.html Home Depot to pay $2 million settlement for overcharging customers and false advertising | CNN BusinessDow, S&P 500 surge t..

import numpy as np# Example matrixmatrix = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])# Calculate the rank of the matrixrank = np.linalg.matrix_rank(matrix)print("Rank of the matrix:", rank) # Rank of the matrix is 2In linear algebra, the rank of a matrix A is the dimension of the vector space generated (or spanned) by the columns. This corresponds to the ma..

Date: 09/13/2024 ================= Student: Dawoon Kim Topic: Eye colour change is riskiest cosmetic surgery https://breakingnewsenglish.com/2409/240902-eye-colour-change-5.html Eye colour change is riskiest cosmetic surgeryEnglish News Lessons: Free 27-Page lesson plan / 2-page mini-lesson - Eye Colour - Handouts, online activities, speed reading, dictation, mp3... current events.breakingnewsen..

예시 코드는 아래와 같다. # PACKAGE# First load the worksheet dependencies.# Here is the activation function and its derivative.sigma = lambda z : 1 / (1 + np.exp(-z))d_sigma = lambda z : np.cosh(z/2)**(-2) / 4# This function initialises the network with it's structure, it also resets any training already done.def reset_network (n1 = 6, n2 = 7, random=np.random) : global W1, W2, W3, b1, b2, b3 W1 = r..