Deep Learning for Multi-Label Text Classification

This repository is my research project, and it is also a study of TensorFlow, Deep Learning (Fasttext, CNN, LSTM, etc.).

The main objective of the project is to solve the multi-label text classification problem based on Deep Neural Networks. Thus, the format of the data label is like [0, 1, 0, ..., 1, 1] according to the characteristics of such a problem.

Requirements

• Python 3.6
• Tensorflow 1.15.0
• Tensorboard 1.15.0
• Sklearn 0.19.1
• Numpy 1.16.2
• Gensim 3.8.3
• Tqdm 4.49.0

Project

The project structure is below:

.
├── Model
│   ├── test_model.py
│   ├── text_model.py
│   └── train_model.py
├── data
│   ├── word2vec_100.model.* [Need Download]
│   ├── Test_sample.json
│   ├── Train_sample.json
│   └── Validation_sample.json
└── utils
│   ├── checkmate.py
│   ├── data_helpers.py
│   └── param_parser.py
├── LICENSE
├── README.md
└── requirements.txt

Innovation

Data part

1. Make the data support Chinese and English (Can use jieba or nltk ).
2. Can use your pre-trained word vectors (Can use gensim).
3. Add embedding visualization based on the tensorboard (Need to create metadata.tsv first).

Model part

1. Add the correct L2 loss calculation operation.
2. Add gradients clip operation to prevent gradient explosion.
3. Add learning rate decay with exponential decay.
4. Add a new Highway Layer (Which is useful according to the model performance).
5. Add Batch Normalization Layer.

Code part

1. Can choose to train the model directly or restore the model from the checkpoint in train.py.
2. Can predict the labels via threshold and top-K in train.py and test.py.
3. Can calculate the evaluation metrics --- AUC & AUPRC.
4. Can create the prediction file which including the predicted values and predicted labels of the Testset data in test.py.
5. Add other useful data preprocess functions in data_helpers.py.
6. Use logging for helping to record the whole info (including parameters display, model training info, etc.).
7. Provide the ability to save the best n checkpoints in checkmate.py, whereas the tf.train.Saver can only save the last n checkpoints.

Data

See data format in /data folder which including the data sample files. For example:

{"testid": "3935745", "features_content": ["pore", "water", "pressure", "metering", "device", "incorporating", "pressure", "meter", "force", "meter", "influenced", "pressure", "meter", "device", "includes", "power", "member", "arranged", "control", "pressure", "exerted", "pressure", "meter", "force", "meter", "applying", "overriding", "force", "pressure", "meter", "stop", "influence", "force", "meter", "removing", "overriding", "force", "pressure", "meter", "influence", "force", "meter", "resumed"], "labels_index": [526, 534, 411], "labels_num": 3}

• "testid": just the id.
• "features_content": the word segment (after removing the stopwords)
• "labels_index": The label index of the data records.
• "labels_num": The number of labels.

Text Segment

1. You can use nltk package if you are going to deal with the English text data.

2. You can use jieba package if you are going to deal with the Chinese text data.

Data Format

This repository can be used in other datasets (text classification) in two ways:

1. Modify your datasets into the same format of the sample.
2. Modify the data preprocessing code in data_helpers.py.

Anyway, it should depend on what your data and task are.

🤔Before you open the new issue about the data format, please check the data_sample.json and read the other open issues first, because someone maybe ask me the same question already. For example:

• 输入文件的格式是什么样子的？
• Where is the dataset for training?
• 在 data_helpers.py 中的 content.txt 与 metadata.tsv 是什么，具体格式是什么，能否提供一个样例？

Pre-trained Word Vectors

You can download the Word2vec model file (dim=100). Make sure they are unzipped and under the /data folder.

You can pre-training your word vectors (based on your corpus) in many ways:

• Use gensim package to pre-train data.
• Use glove tools to pre-train data.
• Even can use a fasttext network to pre-train data.

Usage

See Usage.

Network Structure

FastText

References:

• Bag of Tricks for Efficient Text Classification

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TextANN

References:

• Personal ideas 🙃

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TextCNN

References:

• Convolutional Neural Networks for Sentence Classification
• A Sensitivity Analysis of (and Practitioners' Guide to) Convolutional Neural Networks for Sentence Classification

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TextRNN

Warning: Model can use but not finished yet 🤪!

TODO

1. Add BN-LSTM cell unit.
2. Add attention.

References:

• Recurrent Neural Network for Text Classification with Multi-Task Learning

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TextCRNN

References:

• Personal ideas 🙃

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TextRCNN

References:

• Personal ideas 🙃

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TextHAN

References:

• Hierarchical Attention Networks for Document Classification

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TextSANN

Warning: Model can use but not finished yet 🤪!

TODO

1. Add attention penalization loss.
2. Add visualization.

References:

• A STRUCTURED SELF-ATTENTIVE SENTENCE EMBEDDING

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About Me

黄威，Randolph

SCU SE Bachelor; USTC CS Ph.D.

Email: [email protected]

My Blog: randolph.pro

LinkedIn: randolph's linkedin