batch normalization in tensorflow requires this extra dependency 为什么加上这两句? extra_update_ops = tf.get_collection(tf.GraphKeys.UPDATE_OPS) with tf.control_dependencies(extra_update_ops): train_step = optimizer.minimize(mean_loss)
作业内容,完成作业便可熟悉如下内容: cell 1 设置绘图默认参数 # Run some setup code for this notebook. import random import numpy as np from cs231n.data_utils import load_CIFAR10 import matplotlib.pyplot as plt # This is a bit of magic to make matplotlib figures appear inline
CS231n的课后作业非常的好,这里记录一下自己对作业一些笔记. 一.第一个是KNN的代码,这里的trick是计算距离的三种方法,核心的话还是python和machine learning中非常实用的向量化操作,可以大大的提高计算速度. import numpy as np class KNearestNeighbor(object):#首先是定义一个处理KNN的类 """ a kNN classifier with L2 distance """
在完成SVM作业的基础上,Softmax的作业相对比较轻松. 完成本作业需要熟悉与掌握的知识: cell 1 设置绘图默认参数 mport random import numpy as np from cs231n.data_utils import load_CIFAR10 import matplotlib.pyplot as plt %matplotlib inline plt.rcParams['figure.figsize'] = (10.0, 8.0) # set default s
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
一份不错的作业3资料(含答案) RNN神经元理解 单个RNN神经元行为 括号中表示的是维度 向前传播 def rnn_step_forward(x, prev_h, Wx, Wh, b): """ Run the forward pass for a single timestep of a vanilla RNN that uses a tanh activation function. The input data has dimension D, the hidden