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Transformer-GCN-QA

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A Q/A architecture based on transformers and GCNs.

Installation

This package requires python 3.7+ and CUDA 10.0. There are several dependencies not in the setup.py that you will need to install before installing this package.

First, although optional, it is highly recommended that you create a virtual environment. For example, using conda

$ conda create -n transformer-gcn-qa python=3.7 -y
$ conda activate transformer-gcn-qa
# Notice, the prompt has changed to indicate that the enviornment is active
(transformer-gcn-qa) $

You will then need to install CUDA 10.0 by following the installation instructions for your system. CUDA 10.0 can be downloaded from here.

With CUDA 10.0 installed, follow the instructions here to install PyTorch for your system. For example, using conda and installing for Linux or Windows with CUDA 10.0

(transformer-gcn-qa) $ conda install pytorch torchvision cudatoolkit=10.0 -c pytorch

The R-GCN implementation is from pytorch-geometric. Installation involves ensuring various system variables are set followed by pip installing a number of packages. Comprehensive installation instructions can be found here.

Finally, install this package and its remaining dependencies straight from GitHub

(transformer-gcn-qa) $ pip install git+https://github.com/berc-uoft/Transformer-GCN-QA.git

or install by cloning this repository

(transformer-gcn-qa) $ git clone https://github.com/berc-uoft/Transformer-GCN-QA.git
(transformer-gcn-qa) $ cd Transformer-GCN-QA

and then using either pip

(transformer-gcn-qa) $ pip install -e .

or setuptools

(transformer-gcn-qa) $ python setup.py install

Regardless of installation method, you will need to additionally download a SpaCy English language model

(transformer-gcn-qa) $ python -m spacy download en_core_web_lg

Install with development requirements

To run the test suite (or use TensorBoard), you will want to install with

(transformer-gcn-qa) $ pip install -e .[dev]

Usage

Quickstart

Download Wiki- or MedHop here, and then preprocess it with

python -m src.cli.preprocess_wikihop -i path/to/wiki/or/medhop -o path/to/preprocessed/wiki/or/medhop

Note, this can take up to 12 hours to complete.

Then build the graphs used during the online training step

python -m src.cli.build_graphs -i path/to/preprocessed/wiki/or/medhop

Finally, to train the model

python -m src.cli.train -i path/to/preprocessed/wiki/or/medhop

See below for more detailed usage instructions.

Command line interface (CLI)

Command line interfaces are provided for convenience. Pass --help to any script to get more usage information, for example

(transformer-gcn-qa) $ python -m src.cli.preprocess_wikihop --help

preprocess_wikihop.py

This script will take the Wiki- or MedHop dataset and save to disk everything we need to assemble the graph

(transformer-gcn-qa) $ python -m src.cli.preprocess_wikihop -i path/to/wiki/or/medhop -o path/to/preprocessed/wiki/or/medhop

build_graphs.py

This script will take the pre-processed Wiki- or MedHop dataset and create/save the graph tensors to disk, which are used as inputs to the model.

(transformer-gcn-qa) $ python -m src.cli.build_graph -i path/to/preprocessed/wiki/or/medhop

train.py

This script will train a model on a pre-processed Wiki- or MedHop dataset.

(transformer-gcn-qa) $ python -m src.cli.train -i path/to/preprocessed/wiki/or/medhop

To monitor performance with TensorBoard, first, make sure you have installed with dev dependencies. During a training session, call tensorboard --logdir=runs and then access port 6006 in your browser.

Troubleshooting

If you have any question about our code or methods, please open an issue.

Test suite

The test suite can be found in src/tests. To run, first follow the instructions for installing with development requirements).

The test suite can then be run with the following command

(transformer-gcn-qa) $ cd Transformer-GCN-QA
(transformer-gcn-qa) $ tox

Installation error from NeuralCoref

If you get an error mentioning spacy.strings.StringStore size changed, may indicate binary incompatibility you will need to install neuralcoref from the distribution's sources

(transformer-gcn-qa) $ pip uninstall neuralcoref -y
(transformer-gcn-qa) $ pip install neuralcoref --no-binary neuralcoref