Code for the paper "A Simple but Tough-to-Beat Baseline for Sentence Embeddings".

Related tags

Text Data & NLPSIF
Overview

SIF

This is the code for the paper "A Simple but Tough-to-Beat Baseline for Sentence Embeddings".

The code is written in python and requires numpy, scipy, pickle, sklearn, theano and the lasagne library. Some functions/classes are based on the code of John Wieting for the paper "Towards Universal Paraphrastic Sentence Embeddings" (Thanks John!). The example data sets are also preprocessed using the code there.

Install

To install all dependencies virtualenv is suggested:

$ virtualenv .env
$ . .env/bin/activate
$ pip install -r requirements.txt 

Get started

To get started, cd into the directory examples/ and run demo.sh. It downloads the pretrained GloVe word embeddings, and then runs the scripts:

  • sif_embedding.py is an demo on how to generate sentence embedding using the SIF weighting scheme,
  • sim_sif.py and sim_tfidf.py are for the textual similarity tasks in the paper,
  • supervised_sif_proj.sh is for the supervised tasks in the paper.

Check these files to see the options.

Source code

The code is separated into the following parts:

  • SIF embedding: involves SIF_embedding.py. The SIF weighting scheme is very simple and is implmented in a few lines.
  • textual similarity tasks: involves data_io.py, eval.py, and sim_algo.py. data_io provides the code for reading the data, eval is for evaluating the performance, and sim_algo provides the code for our sentence embedding algorithm.
  • supervised tasks: involves data_io.py, eval.py, train.py, proj_model_sim.py, and proj_model_sentiment.py. train provides the entry for training the models (proj_model_sim is for the similarity and entailment tasks, and proj_model_sentiment is for the sentiment task). Check train.py to see the options.
  • utilities: includes lasagne_average_layer.py, params.py, and tree.py. These provides utility functions/classes for the above two parts.

References

For technical details and full experimental results, see the paper.

@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}
}
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