Code for DeepXML: A Deep Extreme Multi-Label Learning Framework Applied to Short Text Documents

Overview

DeepXML

Code for DeepXML: A Deep Extreme Multi-Label Learning Framework Applied to Short Text Documents


Architectures and algorithms

DeepXML supports multiple feature architectures such as Bag-of-embedding/Astec, RNN, CNN etc. The code uses a json file to construct the feature architecture. Features could be computed using following encoders:

  • Bag-of-embedding/Astec: As used in the DeepXML paper [1].
  • RNN: RNN based sequential models. Support for RNN, GRU, and LSTM.
  • XML-CNN: CNN architecture as proposed in the XML-CNN paper [4].

Best Practices for features creation


  • Adding sub-words on top of unigrams to the vocabulary can help in training more accurate embeddings and classifiers.

Setting up


Expected directory structure

+-- 
   
    
|  +-- programs
|  |  +-- deepxml
|  |    +-- deepxml
|  +-- data
|    +-- 
    
     
|  +-- models
|  +-- results


    
   

Download data for Astec

* Download the (zipped file) BoW features from XML repository.  
* Extract the zipped file into data directory. 
* The following files should be available in 
   
    /data/
    
      for new datasets (ignore the next step)
    - trn_X_Xf.txt
    - trn_X_Y.txt
    - tst_X_Xf.txt
    - tst_X_Y.txt
    - fasttextB_embeddings_300d.npy or fasttextB_embeddings_512d.npy
* The following files should be available in 
     
      /data/
      
        if the dataset is in old format (please refer to next step to convert the data to new format)
    - train.txt
    - test.txt
    - fasttextB_embeddings_300d.npy or fasttextB_embeddings_512d.npy 

      
     
    
   

Convert to new data format

# A perl script is provided (in deepxml/tools) to convert the data into new format as expected by Astec
# Either set the $data_dir variable to the data directory of a particular dataset or replace it with the path
perl convert_format.pl $data_dir/train.txt $data_dir/trn_X_Xf.txt $data_dir/trn_X_Y.txt
perl convert_format.pl $data_dir/test.txt $data_dir/tst_X_Xf.txt $data_dir/tst_X_Y.txt

Example use cases


A single learner with DeepXML framework

The DeepXML framework can be utilized as follows. A json file is used to specify architecture and other arguments. Please refer to the full documentation below for more details.

./run_main.sh 0 DeepXML EURLex-4K 0 108

An ensemble of multiple learners with DeepXML framework

An ensemble can be trained as follows. A json file is used to specify architecture and other arguments.

./run_main.sh 0 DeepXML EURLex-4K 0 108,666,786

Full Documentation

./run_main.sh 
    
     
      
       
       
         * gpu_id: Run the program on this GPU. * framework - DeepXML: Divides the XML problems in 4 modules as proposed in the paper. - DeepXML-OVA: Train the architecture in 1-vs-all fashion [4][5], i.e., loss is computed for each label in each iteration. - DeepXML-ANNS: Train the architecture using a label shortlist. Support is available for a fixed graph or periodic training of the ANNS graph. * dataset - Name of the dataset. - Astec expects the following files in 
        
         /data/
         
           - trn_X_Xf.txt - trn_X_Y.txt - tst_X_Xf.txt - tst_X_Y.txt - fasttextB_embeddings_300d.npy or fasttextB_embeddings_512d.npy - You can set the 'embedding_dims' in config file to switch between 300d and 512d embeddings. * version - different runs could be managed by version and seed. - models and results are stored with this argument. * seed - seed value as used by numpy and PyTorch. - an ensemble is learned if multiple comma separated values are passed. 
         
        
       
      
     
    
   

Notes

* Other file formats such as npy, npz, pickle are also supported.
* Initializing with token embeddings (computed from FastText) leads to noticible accuracy gain in Astec. Please ensure that the token embedding file is available in data directory, if 'init=token_embeddings', otherwise it'll throw an error.
* Config files are made available in deepxml/configs/
   
    /
    
      for datasets in XC repository. You can use them when trying out Astec/DeepXML on new datasets.
* We conducted our experiments on a 24-core Intel Xeon 2.6 GHz machine with 440GB RAM with a single Nvidia P40 GPU. 128GB memory should suffice for most datasets.
* Astec make use of CPU (mainly for nmslib) as well as GPU. 

    
   

Cite as

@InProceedings{Dahiya21,
    author = "Dahiya, K. and Saini, D. and Mittal, A. and Shaw, A. and Dave, K. and Soni, A. and Jain, H. and Agarwal, S. and Varma, M.",
    title = "DeepXML: A Deep Extreme Multi-Label Learning Framework Applied to Short Text Documents",
    booktitle = "Proceedings of the ACM International Conference on Web Search and Data Mining",
    month = "March",
    year = "2021"
}

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References


[1] K. Dahiya, D. Saini, A. Mittal, A. Shaw, K. Dave, A. Soni, H. Jain, S. Agarwal, and M. Varma. Deepxml: A deep extreme multi-label learning framework applied to short text documents. In WSDM, 2021.

[2] pyxclib: https://github.com/kunaldahiya/pyxclib

[3] H. Jain, V. Balasubramanian, B. Chunduri and M. Varma, Slice: Scalable linear extreme classifiers trained on 100 million labels for related searches, In WSDM 2019.

[4] J. Liu, W.-C. Chang, Y. Wu and Y. Yang, XML-CNN: Deep Learning for Extreme Multi-label Text Classification, In SIGIR 2017.

[5] R. Babbar, and B. Schölkopf, DiSMEC - Distributed Sparse Machines for Extreme Multi-label Classification In WSDM, 2017.

[6] P., Bojanowski, E. Grave, A. Joulin, and T. Mikolov. Enriching word vectors with subword information. In TACL, 2017.

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