Morphology & generalisation

Installation

Install OpenNMT via the conventional route (e.g. https://pypi.org/project/OpenNMT-py/1.2.0/). Afterwards, replace your implementation with the OpenNMT code provided here, and rerunning python setup.py install.

Model training

This repository provides a custom adapted installation of OpenNMT in opennmt, with a dedicated README on the scripts to train encoder-decoder models and run the various behavioural tests.

DC training and visualising results

Afterwards, the results presented in the paper can reproduced with code from the following folders:

• behavioural
  • visualise_nonce.ipynb: jupyter notebook to visualise nonce predictions.
  • visualise_training_curve.ipynb: jupyter notebook to visualise the training curves.
  • visualise_overgeneralisation.ipynb: jupyter notebook to visualise the overgeneralisation curves.
  • visualise_enforce_gender.ipynb: jupyter notebook to visualise the plural classes after enforcing gender.
  • visualise_increasing_lengths.ipynb: jupyter notebook to visualise the increasing lengths for the -s class.
• diagnostic_classification:
  • Contains various bash and python scripts to train DCs. Visit the folder for suggestions on how to train DCs and evaluate them.
  • Afterwards, visualise_diagnostic_classification.ipynb can help visualise the results,
  • and baselines.ipynb helps you collect baseline results.
• interventions:
  • Contains various bash and python scripts to perform interventions. Visit the folder for suggestions on how to train DCs and evaluate them.
  • Afterwards, visualise_interventions.ipynb can help visualise the results.
• belth_model: Decision trees of the models by Belth et al. (2021), retrained on Wiktionary data for 5 seeds. (https://arxiv.org/pdf/2105.05790.pdf)

The graphic below summarises the results per plural class, where the line thickness indicates relative performance, and colour gradients indicate how performance increases as a word is being processed.

@inproceedings{dankers2021generalising,
  title={Generalising to German plural noun classes, from the perspective of a recurrent neural network},
  author={Dankers, Verna and Langedijk, Anna and McCurdy, Kate and Williams, Adina and Hupkes, Dieuwke},
  booktitle={Proceedings of the 25th Conference on Computational Natural Language Learning},
  pages={94--108},
  year={2021}
}