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Repository Details

An Open-source Neural Hierarchical Multi-label Text Classification Toolkit

NeuralClassifier Logo

NeuralClassifier: An Open-source Neural Hierarchical Multi-label Text Classification Toolkit

Introduction

NeuralClassifier is designed for quick implementation of neural models for hierarchical multi-label classification task, which is more challenging and common in real-world scenarios. A salient feature is that NeuralClassifier currently provides a variety of text encoders, such as FastText, TextCNN, TextRNN, RCNN, VDCNN, DPCNN, DRNN, AttentiveConvNet and Transformer encoder, etc. It also supports other text classification scenarios, including binary-class and multi-class classification. It is built on PyTorch. Experiments show that models built in our toolkit achieve comparable performance with reported results in the literature.

Support tasks

  • Binary-class text classifcation
  • Multi-class text classification
  • Multi-label text classification
  • Hiearchical (multi-label) text classification (HMC)

Support text encoders

Requirement

  • Python 3
  • PyTorch 0.4+
  • Numpy 1.14.3+

System Architecture

NeuralClassifier Architecture

Usage

Training

How to train a non-hierarchical classifier

python train.py conf/train.json 
  • set task_info.hierarchical = false.
  • model_name can be FastText、TextCNN、TextRNN、TextRCNN、DRNN、VDCNN、DPCNN、AttentiveConvNet、Transformer.

How to train a hierarchical classifier using hierarchial penalty

python train.py conf/train.hierar.json
  • set task_info.hierarchical = true.
  • model_name can be FastText、TextCNN、TextRNN、TextRCNN、DRNN、VDCNN、DPCNN、AttentiveConvNet、Transformer

How to train a hierarchical classifier with HMCN

python train.py conf/train.hmcn.json 
  • set task_info.hierarchical = false.
  • set model_name = HMCN

Detail configurations and explanations see Configuration.

The training info will be outputted in standard output and log.logger_file.

Evaluation

python eval.py conf/train.json
  • if eval.is_flat = false, hierarchical evaluation will be outputted.
  • eval.model_dir is the model to evaluate.
  • data.test_json_files is the input text file to evaluate.

The evaluation info will be outputed in eval.dir.

Prediction

python predict.py conf/train.json data/predict.json 
  • predict.json should be of json format, while each instance has a dummy label like "其他" or any other label in label map.
  • eval.model_dir is the model to predict.
  • eval.top_k is the number of labels to output.
  • eval.threshold is the probability threshold.

The predict info will be outputed in predict.txt.

Input Data Format

JSON example:

{
    "doc_label": ["Computer--MachineLearning--DeepLearning", "Neuro--ComputationalNeuro"],
    "doc_token": ["I", "love", "deep", "learning"],
    "doc_keyword": ["deep learning"],
    "doc_topic": ["AI", "Machine learning"]
}

"doc_keyword" and "doc_topic" are optional.

Performance

0. Dataset

DatasetTaxonomy#Label#Training#Test
RCV1Tree10323,149781,265
YelpDAG53987,37537,265

1. Compare with state-of-the-art

Text EncodersMicro-F1 on RCV1Micro-F1 on Yelp
HR-DGCNN (Peng et al., 2018)0.7610-
HMCN (Wehrmann et al., 2018)0.80800.6640
Ours0.83130.6704

2. Different text encoders

Text EncodersRCV1Yelp
Micro-F1Macro-F1Micro-F1Macro-F1
TextCNN0.77170.52460.62810.3657
TextRNN0.81520.54580.67040.4059
RCNN0.83130.60470.65690.3951
FastText0.68870.2701 0.60310.2323
DRNN0.7846 0.51470.65790.4401
DPCNN0.8220 0.5609 0.5671 0.2393
VDCNN0.7263 0.38600.63950.4035
AttentiveConvNet0.75330.43730.63670.4040
RegionEmbedding0.7780 0.4888 0.66010.4514
Transformer0.7603 0.42740.65330.4121
Star-Transformer0.7668 0.48400.64820.3895

3. Hierarchical vs Flat

Text EncodersHierarchicalFlat
Micro-F1Macro-F1Micro-F1Macro-F1
TextCNN0.77170.52460.73670.4224
TextRNN0.81520.54580.7546 0.4505
RCNN0.83130.60470.79550.5123
FastText0.68870.2701 0.68650.2816
DRNN0.7846 0.51470.75060.4450
DPCNN0.8220 0.5609 0.7423 0.4261
VDCNN0.7263 0.38600.71100.3593
AttentiveConvNet0.75330.43730.75110.4286
RegionEmbedding0.7780 0.4888 0.76400.4617
Transformer0.7603 0.42740.76020.4339
Star-Transformer0.7668 0.48400.76180.4745

Acknowledgement

Some public codes are referenced by our toolkit:

Update

  • 2019-04-29, init version

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