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C++ Study Week Two

第二周一、类和对象的基本概念（2） 1.1 类的成员函数和类的定义分开写 // 矩形类 class CRectangle { public: int w, h; int Area()； // 成员函数仅在此处声明 int Perimeter()； void Init(int w_, int h_)；...

Posted by LudoArt on March 23, 2019

C++ Study Week Three

第三周一、this指针非静态成员函数中可以直接使用this来代表指向该函数作用的对象的指针。 class A{ int i; public: void Hello(){ cout << "hello" << endl; } }; int main(){ A * p = NULL; p ...

Posted by LudoArt on March 23, 2019

C++ Study Week One

第一周一、引用 1.1 引用的概念 int n =4; int & r = n; // r引用了n，r的类型是int & 某个变量的引用，等价于这个变量，相当于该变量的一个别名 int n = 7; int & r = n; r = 4; cout << r; // 4 cout << n; //...

Posted by LudoArt on March 23, 2019

Tensorflow Turtorial

Building a neural network in tensorflow

1 探索Tensorflow库首先，导入所需的库，如下： import math import numpy as np import h5py import matplotlib.pyplot as plt import tensorflow as tf from tensorflow.python.framework import ops from tf_u...

Posted by LudoArt on February 25, 2019

Optimization Methos

1 导入所需的包 import numpy as np import matplotlib.pyplot as plt import scipy.io import math import sklearn import sklearn.datasets from opt_utils import load_params_and_grads, initialize...

Posted by LudoArt on February 22, 2019

Improving Deep Neural Networks Part Two

Regularization

改进深度神经网络之二：正则化 1 导入所需的包和数据集 # import packages import numpy as np import matplotlib.pyplot as plt from reg_utils import sigmoid, relu, plot_decision_boundary, initialize_parameters, l...

Posted by LudoArt on February 20, 2019

Improving Deep Neural Networks Part Three

Gradient Checking

改进深度神经网络之三：梯度校验 1 导入所需的包 # Packages import numpy as np from testCases import * from gc_utils import sigmoid, relu, dictionary_to_vector, vector_to_dictionary, gradients_to_vector 2...

Posted by LudoArt on February 20, 2019

Improving Deep Neural Networks Part One

Initialization

改进深度神经网络之一：初始化 1 导入所需的包和数据集 import numpy as np import matplotlib.pyplot as plt import sklearn import sklearn.datasets from init_utils import sigmoid, relu, compute_loss, forward_prop...

Posted by LudoArt on February 19, 2019

Deep Neural Network for Image Classification Application

1 导入所需的包 import time import numpy as np import h5py import matplotlib.pyplot as plt import scipy from PIL import Image from scipy import ndimage from dnn_app_utils_v2 import * plt.rc...

Posted by LudoArt on February 17, 2019

Building your Deep Neural Network Step by Step

1 导入所需的包 import numpy as np import h5py import matplotlib.pyplot as plt from testCases_v2 import * from dnn_utils_v2 import sigmoid, sigmoid_backward, relu, relu_backward %matplotlib...

Posted by LudoArt on February 17, 2019

LudoArt Blog

C++ Study Week Two

C++ Study Week Three

C++ Study Week One

Tensorflow Turtorial

Building a neural network in tensorflow

Optimization Methos

Improving Deep Neural Networks Part Two

Regularization

Improving Deep Neural Networks Part Three

Gradient Checking

Improving Deep Neural Networks Part One

Initialization

Deep Neural Network for Image Classification Application

Building your Deep Neural Network Step by Step

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