universal-computation

Overview

Official codebase for Pretrained Transformers as Universal Computation Engines. Contains demo notebook and scripts to reproduce experiments.

Project Demo

For a minimal demonstration of frozen pretrained transformers, see demo.ipynb. You can run the notebook which reproduces the Bit XOR experiment in a couple minutes, and visualizes the learned attention maps.

Status

No updates are currently planned but there may be new features added in the future.

Currently the repo supports the following tasks:

['bit-memory', 'bit-xor', 'listops', 'mnist', 'cifar10', 'cifar10-gray', 'remote-homology']

As well as the following models:

['gpt2', 'gpt2-medium', 'gpt2-large', 'gpt2-xl', 'vit', 'lstm']

Note that CIFAR-10 LRA is cifar10-gray with a patch size of 1.

Usage

Installation

Install Anaconda environment:
```
$ conda env create -f environment.yml
```
Add universal-computation/ to your PYTHONPATH, i.e. add this line to your ~/.bashrc:
```
export PYTHONPATH=~/universal-computation:$PYTHONPATH
```

Downloading datasets

Datasets are stored in data/. MNIST and CIFAR-10 are automatically downloaded by PyTorch upon starting experiment.

Listops

Download the files for Listops from Long Range Arena. Move the .tsv files into data/listops. There should be three files: basic_test, basic_train, basic_val. The script evaluates on the validation set by default.

Remote homology

Install and download the files for Remote Homology from TAPE. Move the files into data/tape, i.e. there will exist a directory (and valid variant)

data/tape/remote_homology/remote_homology_train.lmdb

Inside, there should be two files, data.mdb and lock.mdb. The script evaluates on the validation set by default.

Running experiments

You can run experiments with:

python scripts/run.py

Adding -w True will log results to Weights and Biases.

Citation

@article{lu2021fpt,
  title={Pretrained Transformers as Universal Computation Engines},
  author={Kevin Lu and Aditya Grover and Pieter Abbeel and Igor Mordatch},
  journal={arXiv preprint arXiv:2103.05247},
  year={2021}
}

License

MIT

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