alfatti/simple-but-tough-to-beat-examples

Bunch of examples of a "Simple but tough to beat baseline for sentence embeddings" in classification tasks

simple-but-tough-to-beat-examples

A set of examples to demonstrate the performance of "simple but tought to beat" sentence embeddings in different downstream tasks. For simplicity and speed, we use FastText to learn word representations from a corpus and use them for the baseline.

Quick Setup

Install dependencies

$ pip install -U pipenv && pipenv install --dev

export to $PYTHONPATH

export PYTHONPATH=$PYTHONPATH:/path/to/simple-but-tough-to-beat-examples

Usage

Load pre-built w2v

from encoder import build_from_w2v_path

sentence_encoder = build_from_w2v_path('wiki-news-300d-1M-subword.vec')

Load pre-built FastText model

from encoder import build_from_fasttext_bin

sentence_encoder = build_from_fasttext_bin('cc.en.300.bin')

Fine-tune

sentence_encoder.fit(corpus)

transform sentences to embeddings

corpus = [
	'this is a sentence',
	'this is another sentence',
	...
]

sentence_encoder.fit_transform(corpus)

Examples

• Fake News Classification - Following this blog post we demonstrate roughly the same performance of the "Universal Sentence Encoder" for classification of "fake news".
• IMDB Review Sentiment Analysis - We show how ~90% accuracy can be achieved with the baseline encoder (SOTA = XLNet).

References

[1] Sanjeev Arora, Yingyu Liang, Tengyu Ma, A Simple but Tough-to-Beat Baseline for Sentence Embeddings

@article{arora2017asimple, 
	author = {Sanjeev Arora and Yingyu Liang and Tengyu Ma}, 
	title = {A Simple but Tough-to-Beat Baseline for Sentence Embeddings}, 
	booktitle = {International Conference on Learning Representations},
	year = {2017}
}

[2] P. Bojanowski*, E. Grave*, A. Joulin, T. Mikolov, Enriching Word Vectors with Subword Information

@article{bojanowski2017enriching,
  title={Enriching Word Vectors with Subword Information},
  author={Bojanowski, Piotr and Grave, Edouard and Joulin, Armand and Mikolov, Tomas},
  journal={Transactions of the Association for Computational Linguistics},
  volume={5},
  year={2017},
  issn={2307-387X},
  pages={135--146}
}