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목록Neural Networks and Deep Learning (4)
함께하는 데이터 분석
Deep neural network notation Forward propagation in a deep network Parameters W[l] and b[l] Vectorized implementation Intuition about deep representation Forward and Backward fuctions Forward propagation for layer l Backward propagation for layer l What are hyperparameters?
Neural Network Representation Computing a Neural Network's Output Vectorizing across multiple examples Justification for vectorized implementation Activation functions Why do you need Non-Linear Activation Functions? Derivatives of Activation Functions Gradient descent for neural networks Formulas for computing derivatives What happens if you initialize weights to zero? Random initialization
Linear Regression Logistic Regression Logistic Regression cost function Gradient Descent Logistic Regression Gradient Descent Logistic Regression Gradient Descent on m examples Vectorization import numpy as np import time a = np.random.rand(1000000) b = np.random.rand(1000000) tic = time.time() c = 0 for i in range(1000000) : c += a[i] * b[i] toc = time.time() print('for loop :' + str(1000 * (to..