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  • 导入和预处理训练数据集 参考TensorFlow官网的教程,创建一个简单的图片分类模型。 查看当前TensorFlow版本,单击或者敲击Shift+Enter运行cell。 1 2 3 4 5 6 7 8 9 10 from __future__ import absolute_import, division, print_function, unicode_literals # TensorFlow and tf.keras import tensorflow as tf from tensorflow import keras # Helper libraries import numpy as np import matplotlib.pyplot as plt # print tensorflow version print(tf.__version__) 下载Fashion MNIST图片数据集,该数据集包含了10个类型共60000张训练图片以及10000张测试图片。 1 2 3 # download Fashion MNIST dataset fashion_mnist = keras.datasets.fashion_mnist (train_images, train_labels), (test_images, test_labels) = fashion_mnist.load_data() 对训练数据做预处理,并查看训练集中最开始的25个图片。 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 class_names = ['T-shirt/top', 'Trouser', 'Pullover', 'Dress', 'Coat', 'Sandal', 'Shirt', 'Sneaker', 'Bag', 'Ankle boot'] # preprocessing train_images = train_images / 255.0 test_images = test_images / 255.0 # display first 25 images plt.figure(figsize=(10,10)) for i in range(25): plt.subplot(5,5,i+1) plt.xticks([]) plt.yticks([]) plt.grid(False) plt.imshow(train_images[i], cmap=plt.cm.binary) plt.xlabel(class_names[train_labels[i]]) plt.show() 父主题: 基于CodeArts IDE Online、TensorFlow和Jupyter Notebook开发深度学习模型