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…

Python Basics with Numpy (optional assignment) Welcome to your first assignment. This exercise gives you a brief introduction to Python. Even if you've used Python before, this will help familiarize you with functions we'll need. Instructions: You wi…

在python语言中,Tensorflow中的tensor返回的是numpy ndarray对象. Numpy的主要对象是齐次多维数组,即一个元素表(通常是数字),所有的元素具有相同类型,可以通过有序整数列表元组tuple访问其元素.In Numpy, dimensions are called axes. The number of axes is rank. Numpy的数组类为ndarray,它还有一个名气甚大的别名array.需要注意的是:numpy.array与python标准库中的a…

Welcome to your first assignment. This exercise gives you a brief introduction to Python. Even if you've used Python before, this will help familiarize you with functions we'll need. Instructions: You will be using Python 3. Avoid using for-loops and…

PyTorch Basics import torch import torchvision import torch.nn as nn import numpy as np import torchvision.transforms as transforms # ================================================================== # # Table of Contents # # =======================…

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…

Coursera课程<Neural Networks and Deep Learning> deeplearning.ai Week2 Neural Networks Basics 2.1 Logistic Regression as a Neutral Network 2.1.1 Binary Classification 二分类 逻辑回归是一个用于二分类(binary classification)的算法.首先我们从一个问题开始说起,这里有一个二分类问题的例子,假如你有一张图片作为输入,比…

摘自https://docs.scipy.org 1.The Basics 1.1 numpy 数组基础 NumPy’s array class is called ndarray. ndarray.ndim the number of axes (dimensions) of the array. In the Python world, the number of dimensions is referred to as rank. ndarray.shape the dimensions…

numpy 简介 numpy的存在使得python拥有强大的矩阵计算能力,不亚于matlab. 官方文档(https://docs.scipy.org/doc/numpy-dev/user/quickstart.html) Quickstart tutorial Prerequisites Before reading this tutorial you should know a bit of Python. If you would like to refresh your memory,…

Quickstart tutorial 引用https://docs.scipy.org/doc/numpy-dev/user/quickstart.html Prerequisites Before reading this tutorial you should know a bit of Python. If you would like to refresh your memory, take a look at the Python tutorial. If you wish to w…