Package: zhanglei
Text Classification with CNN and RNN需要修改地方1，需要修改单词字典；2，文件读取不成功
3，修改cnn模型中的类别数目update这么多东西去哪里了 CNN做句子分类的论文可以参看:Convolutional Neural Networks for Sentence Classification还可以去读dennybritz大牛的博客：Implementing a CNN for Text Classification in TensorFlow以及字符级CNN的论文：Character-level Convolutional Networks for Text Classification本文是基于TensorFlow在中文数据集上的简化实现，使用了字符级CNN和RNN对中文文本进行分类，达到了较好的效果。文中所使用的Conv1D与论文中有些不同，详细参考官方文档：tf.nn.conv1d环境Python 2/3 (感谢howie.hu调试Python2环境)TensorFlow 1.3以上numpyscikit-learnscipy数据集使用THUCNews的一个子集进行训练与测试，数据集请自行到THUCTC：一个高效的中文文本分类工具包下载，请遵循数据提供方的开源协议。本次训练使用了其中的10个分类，每个分类6500条数据。类别如下：体育, 财经, 房产, 家居, 教育, 科技, 时尚, 时政, 游戏, 娱乐这个子集可以在此下载：链接:https://pan.baidu.com/s/1hugrfRu密码: qfud数据集划分如下：训练集: 5000*10验证集: 500*10测试集: 1000*10从原数据集生成子集的过程请参看helper下的两个脚本。其中，copy_data.sh用于从每个分类拷贝6500个文件，cnews_group.py用于将多个文件整合到一个文件中。执行该文件后，得到三个数据文件：cnews.train.txt: 训练集(50000条)cnews.val.txt: 验证集(5000条)cnews.test.txt: 测试集(10000条)预处理data/cnews_loader.py为数据的预处理文件。read_file(): 读取文件数据;build_vocab(): 构建词汇表，使用字符级的表示，这一函数会将词汇表存储下来，避免每一次重复处理;read_vocab(): 读取上一步存储的词汇表，转换为{词：id}表示;read_category(): 将分类目录固定，转换为{类别: id}表示;to_words(): 将一条由id表示的数据重新转换为文字;process_file(): 将数据集从文字转换为固定长度的id序列表示;batch_iter(): 为神经网络的训练准备经过shuffle的批次的数据。经过数据预处理，数据的格式如下：DataShapeDataShapex_train[50000, 600]y_train[50000, 10]x_val[5000, 600]y_val[5000, 10]x_test[10000, 600]y_test[10000, 10]CNN卷积神经网络配置项CNN可配置的参数如下所示，在cnn_model.py中。classTCNNConfig(object):"""CNN配置参数"""embedding_dim=64# 词向量维度seq_length=600# 序列长度num_classes=10# 类别数num_filters=128# 卷积核数目kernel_size=5# 卷积核尺寸vocab_size=5000# 词汇表达小hidden_dim=128# 全连接层神经元dropout_keep_prob=0.5# dropout保留比例learning_rate=1e-3# 学习率batch_size=64# 每批训练大小num_epochs=10# 总迭代轮次print_per_batch=100# 每多少轮输出一次结果save_per_batch=10# 每多少轮存入tensorboardCNN模型具体参看cnn_model.py的实现。大致结构如下：训练与验证运行python run_cnn.py train，可以开始训练。若之前进行过训练，请把tensorboard/textcnn删除，避免TensorBoard多次训练结果重叠。Configuring CNN model...
Configuring TensorBoard and Saver...
Loading training and validation data...
Time usage: 0:00:14
Training and evaluating...
Epoch: 1
Iter:      0, Train Loss:    2.3, Train Acc:  10.94%, Val Loss:    2.3, Val Acc:   8.92%, Time: 0:00:01 *
Iter:    100, Train Loss:   0.88, Train Acc:  73.44%, Val Loss:    1.2, Val Acc:  68.46%, Time: 0:00:04 *
Iter:    200, Train Loss:   0.38, Train Acc:  92.19%, Val Loss:   0.75, Val Acc:  77.32%, Time: 0:00:07 *
Iter:    300, Train Loss:   0.22, Train Acc:  92.19%, Val Loss:   0.46, Val Acc:  87.08%, Time: 0:00:09 *
Iter:    400, Train Loss:   0.24, Train Acc:  90.62%, Val Loss:    0.4, Val Acc:  88.62%, Time: 0:00:12 *
Iter:    500, Train Loss:   0.16, Train Acc:  96.88%, Val Loss:   0.36, Val Acc:  90.38%, Time: 0:00:15 *
Iter:    600, Train Loss:  0.084, Train Acc:  96.88%, Val Loss:   0.35, Val Acc:  91.36%, Time: 0:00:17 *
Iter:    700, Train Loss:   0.21, Train Acc:  93.75%, Val Loss:   0.26, Val Acc:  92.58%, Time: 0:00:20 *
Epoch: 2
Iter:    800, Train Loss:   0.07, Train Acc:  98.44%, Val Loss:   0.24, Val Acc:  94.12%, Time: 0:00:23 *
Iter:    900, Train Loss:  0.092, Train Acc:  96.88%, Val Loss:   0.27, Val Acc:  92.86%, Time: 0:00:25
Iter:   1000, Train Loss:   0.17, Train Acc:  95.31%, Val Loss:   0.28, Val Acc:  92.82%, Time: 0:00:28
Iter:   1100, Train Loss:    0.2, Train Acc:  93.75%, Val Loss:   0.23, Val Acc:  93.26%, Time: 0:00:31
Iter:   1200, Train Loss:  0.081, Train Acc:  98.44%, Val Loss:   0.25, Val Acc:  92.96%, Time: 0:00:33
Iter:   1300, Train Loss:  0.052, Train Acc: 100.00%, Val Loss:   0.24, Val Acc:  93.58%, Time: 0:00:36
Iter:   1400, Train Loss:    0.1, Train Acc:  95.31%, Val Loss:   0.22, Val Acc:  94.12%, Time: 0:00:39
Iter:   1500, Train Loss:   0.12, Train Acc:  98.44%, Val Loss:   0.23, Val Acc:  93.58%, Time: 0:00:41
Epoch: 3
Iter:   1600, Train Loss:    0.1, Train Acc:  96.88%, Val Loss:   0.26, Val Acc:  92.34%, Time: 0:00:44
Iter:   1700, Train Loss:  0.018, Train Acc: 100.00%, Val Loss:   0.22, Val Acc:  93.46%, Time: 0:00:47
Iter:   1800, Train Loss:  0.036, Train Acc: 100.00%, Val Loss:   0.28, Val Acc:  92.72%, Time: 0:00:50
No optimization for a long time, auto-stopping...在验证集上的最佳效果为94.12%，且只经过了3轮迭代就已经停止。准确率和误差如图所示：测试运行python run_cnn.py test在测试集上进行测试。Configuring CNN model...
Loading test data...
Testing...
Test Loss:   0.14, Test Acc:  96.04%
Precision, Recall and F1-Score...
             precision    recall  f1-score   support

         体育       0.99      0.99      0.99      1000
         财经       0.96      0.99      0.97      1000
         房产       1.00      1.00      1.00      1000
         家居       0.95      0.91      0.93      1000
         教育       0.95      0.89      0.92      1000
         科技       0.94      0.97      0.95      1000
         时尚       0.95      0.97      0.96      1000
         时政       0.94      0.94      0.94      1000
         游戏       0.97      0.96      0.97      1000
         娱乐       0.95      0.98      0.97      1000

avg / total       0.96      0.96      0.96     10000

Confusion Matrix...
[[991   0   0   0   2   1   0   4   1   1]
 [  0 992   0   0   2   1   0   5   0   0]
 [  0   1 996   0   1   1   0   0   0   1]
 [  0  14   0 912   7  15   9  29   3  11]
 [  2   9   0  12 892  22  18  21  10  14]
 [  0   0   0  10   1 968   4   3  12   2]
 [  1   0   0   9   4   4 971   0   2   9]
 [  1  16   0   4  18  12   1 941   1   6]
 [  2   4   1   5   4   5  10   1 962   6]
 [  1   0   1   6   4   3   5   0   1 979]]
Time usage: 0:00:05在测试集上的准确率达到了96.04%，且各类的precision, recall和f1-score都超过了0.9。从混淆矩阵也可以看出分类效果非常优秀。RNN循环神经网络配置项RNN可配置的参数如下所示，在rnn_model.py中。classTRNNConfig(object):"""RNN配置参数"""# 模型参数embedding_dim=64# 词向量维度seq_length=600# 序列长度num_classes=10# 类别数vocab_size=5000# 词汇表达小num_layers=2# 隐藏层层数hidden_dim=128# 隐藏层神经元rnn='gru'# lstm 或 grudropout_keep_prob=0.8# dropout保留比例learning_rate=1e-3# 学习率batch_size=128# 每批训练大小num_epochs=10# 总迭代轮次print_per_batch=100# 每多少轮输出一次结果save_per_batch=10# 每多少轮存入tensorboardRNN模型具体参看rnn_model.py的实现。大致结构如下：训练与验证这部分的代码与 run_cnn.py极为相似，只需要将模型和部分目录稍微修改。运行python run_rnn.py train，可以开始训练。若之前进行过训练，请把tensorboard/textrnn删除，避免TensorBoard多次训练结果重叠。Configuring RNN model...
Configuring TensorBoard and Saver...
Loading training and validation data...
Time usage: 0:00:14
Training and evaluating...
Epoch: 1
Iter:      0, Train Loss:    2.3, Train Acc:   8.59%, Val Loss:    2.3, Val Acc:  11.96%, Time: 0:00:08 *
Iter:    100, Train Loss:   0.95, Train Acc:  64.06%, Val Loss:    1.3, Val Acc:  53.06%, Time: 0:01:15 *
Iter:    200, Train Loss:   0.61, Train Acc:  79.69%, Val Loss:   0.94, Val Acc:  69.88%, Time: 0:02:22 *
Iter:    300, Train Loss:   0.49, Train Acc:  85.16%, Val Loss:   0.63, Val Acc:  81.44%, Time: 0:03:29 *
Epoch: 2
Iter:    400, Train Loss:   0.23, Train Acc:  92.97%, Val Loss:    0.6, Val Acc:  82.86%, Time: 0:04:36 *
Iter:    500, Train Loss:   0.27, Train Acc:  92.97%, Val Loss:   0.47, Val Acc:  86.72%, Time: 0:05:43 *
Iter:    600, Train Loss:   0.13, Train Acc:  98.44%, Val Loss:   0.43, Val Acc:  87.46%, Time: 0:06:50 *
Iter:    700, Train Loss:   0.24, Train Acc:  91.41%, Val Loss:   0.46, Val Acc:  87.12%, Time: 0:07:57
Epoch: 3
Iter:    800, Train Loss:   0.11, Train Acc:  96.09%, Val Loss:   0.49, Val Acc:  87.02%, Time: 0:09:03
Iter:    900, Train Loss:   0.15, Train Acc:  96.09%, Val Loss:   0.55, Val Acc:  85.86%, Time: 0:10:10
Iter:   1000, Train Loss:   0.17, Train Acc:  96.09%, Val Loss:   0.43, Val Acc:  89.44%, Time: 0:11:18 *
Iter:   1100, Train Loss:   0.25, Train Acc:  93.75%, Val Loss:   0.42, Val Acc:  88.98%, Time: 0:12:25
Epoch: 4
Iter:   1200, Train Loss:   0.14, Train Acc:  96.09%, Val Loss:   0.39, Val Acc:  89.82%, Time: 0:13:32 *
Iter:   1300, Train Loss:    0.2, Train Acc:  96.09%, Val Loss:   0.43, Val Acc:  88.68%, Time: 0:14:38
Iter:   1400, Train Loss:  0.012, Train Acc: 100.00%, Val Loss:   0.37, Val Acc:  90.58%, Time: 0:15:45 *
Iter:   1500, Train Loss:   0.15, Train Acc:  96.88%, Val Loss:   0.39, Val Acc:  90.58%, Time: 0:16:52
Epoch: 5
Iter:   1600, Train Loss:  0.075, Train Acc:  97.66%, Val Loss:   0.41, Val Acc:  89.90%, Time: 0:17:59
Iter:   1700, Train Loss:  0.042, Train Acc:  98.44%, Val Loss:   0.41, Val Acc:  90.08%, Time: 0:19:06
Iter:   1800, Train Loss:   0.08, Train Acc:  97.66%, Val Loss:   0.38, Val Acc:  91.36%, Time: 0:20:13 *
Iter:   1900, Train Loss:  0.089, Train Acc:  98.44%, Val Loss:   0.39, Val Acc:  90.18%, Time: 0:21:20
Epoch: 6
Iter:   2000, Train Loss:  0.092, Train Acc:  96.88%, Val Loss:   0.36, Val Acc:  91.42%, Time: 0:22:27 *
Iter:   2100, Train Loss:  0.062, Train Acc:  98.44%, Val Loss:   0.39, Val Acc:  90.56%, Time: 0:23:34
Iter:   2200, Train Loss:  0.053, Train Acc:  98.44%, Val Loss:   0.39, Val Acc:  90.02%, Time: 0:24:41
Iter:   2300, Train Loss:   0.12, Train Acc:  96.09%, Val Loss:   0.37, Val Acc:  90.84%, Time: 0:25:48
Epoch: 7
Iter:   2400, Train Loss:  0.014, Train Acc: 100.00%, Val Loss:   0.41, Val Acc:  90.38%, Time: 0:26:55
Iter:   2500, Train Loss:   0.14, Train Acc:  96.88%, Val Loss:   0.37, Val Acc:  91.22%, Time: 0:28:01
Iter:   2600, Train Loss:   0.11, Train Acc:  96.88%, Val Loss:   0.43, Val Acc:  89.76%, Time: 0:29:08
Iter:   2700, Train Loss:  0.089, Train Acc:  97.66%, Val Loss:   0.37, Val Acc:  91.18%, Time: 0:30:15
Epoch: 8
Iter:   2800, Train Loss: 0.0081, Train Acc: 100.00%, Val Loss:   0.44, Val Acc:  90.66%, Time: 0:31:22
Iter:   2900, Train Loss:  0.017, Train Acc: 100.00%, Val Loss:   0.44, Val Acc:  89.62%, Time: 0:32:29
Iter:   3000, Train Loss:  0.061, Train Acc:  96.88%, Val Loss:   0.43, Val Acc:  90.04%, Time: 0:33:36
No optimization for a long time, auto-stopping...在验证集上的最佳效果为91.42%，经过了8轮迭代停止，速度相比CNN慢很多。准确率和误差如图所示：测试运行python run_rnn.py test在测试集上进行测试。Testing...
Test Loss:   0.21, Test Acc:  94.22%
Precision, Recall and F1-Score...
             precision    recall  f1-score   support

         体育       0.99      0.99      0.99      1000
         财经       0.91      0.99      0.95      1000
         房产       1.00      1.00      1.00      1000
         家居       0.97      0.73      0.83      1000
         教育       0.91      0.92      0.91      1000
         科技       0.93      0.96      0.94      1000
         时尚       0.89      0.97      0.93      1000
         时政       0.93      0.93      0.93      1000
         游戏       0.95      0.97      0.96      1000
         娱乐       0.97      0.96      0.97      1000

avg / total       0.94      0.94      0.94     10000

Confusion Matrix...
[[988   0   0   0   4   0   2   0   5   1]
 [  0 990   1   1   1   1   0   6   0   0]
 [  0   2 996   1   1   0   0   0   0   0]
 [  2  71   1 731  51  20  88  28   3   5]
 [  1   3   0   7 918  23   4  31   9   4]
 [  1   3   0   3   0 964   3   5  21   0]
 [  1   0   1   7   1   3 972   0   6   9]
 [  0  16   0   0  22  26   0 931   2   3]
 [  2   3   0   0   2   2  12   0 972   7]
 [  0   3   1   1   7   3  11   5   9 960]]
Time usage: 0:00:33在测试集上的准确率达到了94.22%，且各类的precision, recall和f1-score，除了家居这一类别，都超过了0.9。从混淆矩阵可以看出分类效果非常优秀。对比两个模型，可见RNN除了在家居分类的表现不是很理想，其他几个类别较CNN差别不大。还可以通过进一步的调节参数，来达到更好的效果。预测为方便预测，repo 中predict.py提供了 CNN 模型的预测方法。