n如果有错误,欢迎指出,不胜感激 import numpy as np from cs231n.layers import * from cs231n.layer_utils import * class TwoLayerNet(object): """ A two-layer fully-connected neural network with ReLU nonlinearity and softmax loss that uses a modular layer des…

n import numpy as np from cs231n.layers import * from cs231n.fast_layers import * from cs231n.layer_utils import * class ThreeLayerConvNet(object): """ A three-layer convolutional network with the following architecture: conv - relu - 2x2 m…

如果有错误,欢迎指出,不胜感激. import numpy as np def affine_forward(x, w, b): 第一个最简单的 affine_forward简单的前向传递,返回 out,cache """ Computes the forward pass for an affine (fully-connected) layer. The input x has shape (N, d_1, ..., d_k) and contains a minibat…

n如果有错误,欢迎指出,不胜感激 import numpy as np """ This file implements various first-order update rules that are commonly used for training neural networks. Each update rule accepts current weights and the gradient of the loss with respect to those w…

横1. np.concatenate(list, axis=0) 将数据进行串接,这里主要是可以将列表进行x轴获得y轴的串接 参数说明:list表示需要串接的列表,axis=0,表示从上到下进行串接 2.np.hstack(list)  将列表进行横向排列 参数说明:list.append([1, 2]), list.append([3, 4])  np.hstack(list) , list等于[1, 2, 3, 4] 3. hasattr(optim, 'sgd') 判断optim.py中是…

『cs231n』卷积神经网络的可视化应用 文件目录 vgg16.py import os import numpy as np import tensorflow as tf from download import exist_or_download model_url = 'https://s3.amazonaws.com/cadl/models/vgg16.tfmodel' model_dir = 'vgg16/' model_name = 'vgg16.tfmodel' def mode…

http://blog.csdn.net/dinosoft/article/details/51813615 前言 对于深度学习,新手我推荐先看UFLDL,不做assignment的话,一两个晚上就可以看完.毕竟卷积.池化啥的并不是什么特别玄的东西.课程简明扼要,一针见血,把最基础.最重要的点都点出来 了. cs231n这个是一个完整的课程,内容就多了点,虽然说课程是computer vision的,但80%还是深度学习的内容.图像的工作暂时用不上,我就先略过了. 突然发现这两个课程都是斯坦福的…

第二个作业难度很高,但做(抄)完之后收获还是很大的.... 一.Fully-Connected Neural Nets 首先是对之前的神经网络的程序进行重构,目的是可以构建任意大小的全连接的neural network,这里用模块化的思想构建整个代码,具体思路如下: #前向传播 def layer_forward(x, w): """ Receive inputs x and weights w """ # 做前向计算 z = # 需要存储的中间…

要求:实现任意层数的NN. 每一层结构包含: 1.前向传播和反向传播函数:2.每一层计算的相关数值 cell 1 依旧是显示的初始设置 # As usual, a bit of setup import time import numpy as np import matplotlib.pyplot as plt from cs231n.classifiers.fc_net import * from cs231n.data_utils import get_CIFAR10_data from…

cell 1 显示设置初始化 # A bit of setup import numpy as np import matplotlib.pyplot as plt from cs231n.classifiers.neural_net import TwoLayerNet %matplotlib inline plt.rcParams['figure.figsize'] = (10.0, 8.0) # set default size of plots plt.rcParams['image.i…