摘要：import pandas as pd df = pd.read_json('/Users/chenyi/Documents/News_Category_Dataset.json', lines=True) df.head() categories = df.groupby('category') 阅读全文

摘要：from keras.datasets import imdb #num_words表示加载影评时，确保影评里面的单词使用频率保持在前1万位，于是有些很少见的生僻词在数据加载时会舍弃掉 (train_data, train_labels), (test_data, test_labels) = im 阅读全文

摘要：class NeuralNetWork: def __init__(self): ''' 初始化网络，设置输入层，中间层，输出层的节点数 ''' pass def fit(self): ''' 根据训练数据，不断更新神经网络层之间的链路权重 ''' pass def evaluate(self): 阅读全文

摘要：#绘制步调函数图像 import matplotlib.pyplot as plt x = [1,2,3,4] y = [0, 1, 2, 3] plt.step(x, y) plt.show() import numpy as np import pylab as plt from matplot 阅读全文

摘要：import numpy as np #构建一个含有一个常数12的0维张量 x = np.array(12) print(x) #ndim表示张量的维度 print(x.ndim) x1 = np.array([11,12,13]) print(x1) print(x1.ndim) x2 = np. 阅读全文

摘要：import numpy as np from matplotlib import cm import matplotlib.pyplot as plt from mpl_toolkits.mplot3d import Axes3D from matplotlib.ticker import Lin 阅读全文

摘要：from keras.datasets import mnist (train_images, train_labels),(test_images, test_labels) = mnist.load_data() print(train_images.shape) print(train_lab 阅读全文