关于在51CTO上的深度学习入门课程视频(9)中的code进行解释与总结: (1)单层神经网络: #coding:cp936 #建立单层神经网络,训练四个样本, import numpy as np def nonlin(x,deriv=False): #deriv为False计算前向传播值,为True时计算反向偏导 if deriv == True: return x*(1-x) return 1/(1+np.exp(-x)) X = np.array([[0,0,1],[0,1,1],[1,…
第三周:浅层神经网络(Shallow neural networks) 3.1 神经网络概述(Neural Network Overview) 使用符号$ ^{[…
========================================================================================== 最近一直在看Deep Learning,各类博客.论文看得不少 但是说实话,这样做有些疏于实现,一来呢自己的电脑也不是很好,二来呢我目前也没能力自己去写一个toolbox 只是跟着Andrew Ng的UFLDL tutorial 写了些已有框架的代码(这部分的代码见github) 后来发现了一个matlab的Deep…
Logistic Regression with a Neural Network mindset Welcome to the first (required) programming exercise of the deep learning specialization. In this notebook you will build your first image recognition algorithm. You will build a cat classifier that r…
1.What does the analogy “AI is the new electricity” refer to?  (B) A. Through the “smart grid”, AI is delivering a new wave of electricity. B. Similar to electricity starting about 100 years ago, AI is transforming multiple industries. C. AI is power…
Frequently Asked Questions Congratulations to be part of the first class of the Deep Learning Specialization! This form is here to help you find the answers to the commonly asked questions. We will update it as we receive new questions that we think…
Python Basics with numpy (optional)Welcome to your first (Optional) programming exercise of the deep learning specialization. In this assignment you will: - Learn how to use numpy. - Implement some basic core deep learning functions such as the softm…
1. Understand the major trends driving the rise of deep learning.2. Be able to explain how deep learning is applied to supervised learning.3. Understand what are the major categories of models (such as CNNs and RNNs), and when they should be applied.…
1. Build a logistic regression model, structured as a shallow neural network2. Implement the main steps of an ML algorithm, including making predictions, derivative computation, and gradient descent.3. Implement computationally efficient, highly vect…
Please note that when you are working on the programming exercise you will find comments that say "# GRADED FUNCTION: functionName". Do not edit that comment. The function in that code block will be graded. 1) What is a Jupyter notebook? A Jupyt…