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README.md
requirements.txt
run-sentiment-mttri.sh
run-tagger-mttri.sh

README.md

Strong Baselines for Neural Semi-supervised Learning under Domain Shift

Sebastian Ruder, Barbara Plank (2018). Strong Baselines for Neural Semi-supervised Learning under Domain Shift. In Proceedings of the 56th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), Melbourne, Australia.

Requirements

Python 3.6, scipy, progress, sklearn, and gensim. The packages can be installed with the following commands:

pip install scipy
pip install progress
pip install sklearn
pip install gensim

Alternatively, you can also install all packages directly with: pip install -r requirements.txt

DyNet

We use the neural network library DyNet, which works well with networks that have dynamic structures. If you just want to run DyNet on CPU, you can install it with: pip install dynet. If you want GPU compatibility, follow the instructions here.

Data

Part-of-speech tagging

For part-of-speech tagging, Wall Street Journal (WSJ) data is used for training and development (in data/gweb_sancl/pos_fine/wsj). For a specific target domain TARGET, unlabeled data from data/gweb_sancl/pos_fine/unlabeled/gweb-TARGET-unlabeled.txt is used and test data is in data/gweb_sancl/TARGET.

Sentiment analysis

For sentiment analysis, download the processed version of the Multi-Domain Sentiment Dataset (processed_acl.tar.gz)from here. Extract it to data/processed_acl. We use the same splits as in (Ganin et al., 2016; Saito et al., 2017). Note that these are different from the "standard" splits used in (Blitzer et al., 2007).

Examples

We provide examples for running the MT-Tri POS tagger and sentiment model.

Example for running the Tagger (MT-Tri)

  1. Make sure the unlabeled and labeled seed data is in data/gweb_sancl (example for answers is provided)
  2. Download the embeddings from https://www.dropbox.com/s/4easof0ggsbox9y/embeds-acl2018.tar.gz?dl=0 and extract to embeds/

Now run the tagger (which by default uses the pos_glove setup and the 10% setup):

sh run-tagger-mttri.sh

Example for running the sentiment model (MT-Tri)

  1. Download the sentiment data and extract it to data/processed_acl as described above.

Run the sentiment model (the default setting is Books -> DVD):

sh run-sentiment-mttri.sh

Reference

If you make use of the contents of this repository, we appreciate citing the following paper:

@InProceedings{P18-1096,
  author =	"Ruder, Sebastian
  	 and Plank, Barbara",
  title =    "Strong Baselines for Neural Semi-Supervised Learning under Domain Shift",
  booktitle = 	     "Proceedings of the 56th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)",
  year =    "2018",
  publisher =	"Association for Computational Linguistics",
  pages =   "1044--1054",
  location =	"Melbourne, Australia",
  url =    "http://aclweb.org/anthology/P18-1096"
}

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