Home ➤ Publications ➤ ranathunga2024quality

Quality Does Matter: A Detailed Look at the Quality and Utility of Web-Mined Parallel Corpora

Surangika Ranathunga, Nisansa de Silva, Menan Velayuthan, Aloka Fernando, Charitha Rathnayake
CORE A Conference Proceedings of the 18th Conference of the European Chapter of the Association for Computational Linguistics (Volume 1: Long Papers)

We conducted a detailed analysis on the quality of web-mined corpora for two low-resource languages (making three language pairs, English-Sinhala, English-Tamil and Sinhala-Tamil). We ranked each corpus according to a similarity measure and carried out an intrinsic and extrinsic evaluation on different portions of this ranked corpus. We show that there are significant quality differences between different portions of web-mined corpora and that the quality varies across languages and datasets. We also show that, for some web-mined datasets, Neural Machine Translation (NMT) models trained with their highest-ranked 25k portion can be on par with human-curated datasets.

Keywords: Natural Language Processing | Sinhala | Web-mined Parallel Corpora | Data Quality | Parallel Corpora | Low-resource Languages | Parallel Data Curation | Cross-lingual Representations | Translation |

   Page: /

@inproceedings{ranathunga2024quality,
  title={Quality Does Matter: A Detailed Look at the Quality and Utility of Web-Mined Parallel Corpora},
  author={Ranathunga, Surangika and de Silva, Nisansa and Velayuthan, Menan and Fernando, Aloka and Rathnayake, Charitha},
  booktitle ={Proceedings of the 18th Conference of the European Chapter of the Association for Computational Linguistics (Volume 1: Long Papers)},
   month = {03},
    address = {St. Julian{'}s, Malta},
    publisher = {Association for Computational Linguistics},
    url = {https://aclanthology.org/2024.eacl-long.52},
    pages = {860--880},
  abstract={We conducted a detailed analysis on the quality of web-mined corpora for two low-resource languages (making three language pairs, English-Sinhala, English-Tamil and Sinhala-Tamil). We ranked each corpus according to a similarity measure and carried out an intrinsic and extrinsic evaluation on different portions of this ranked corpus. We show that there are significant quality differences between different portions of web-mined corpora and that the quality varies across languages and datasets. We also show that, for some web-mined datasets, Neural Machine Translation (NMT) models trained with their highest-ranked 25k portion can be on par with human-curated datasets.},
  year={2024},
  misc={https://arxiv.org/pdf/2402.07446.pdf,NLP:SIN,https://goo.gl/iY6aTr}
}



Acknowledgement

This work was partially supported by the following grants:

2022
08
-
2025
12
Multi-domain Neural Machine Translation (NMT) System for Sinhala, Tamil, and English
$35,000 - Google/2022
We propose to create a multi-domain Neural Machine Translation (NMT) System for Sinhala, Tamil, and English, the official languages of Sri Lanka.


Related Projects

Data Quality Estimation and Improvement

Active

PI: Surangika Ranathunga

The Data Quality Estimation and Improvement project focuses on analysing, measuring, and enhancing the quality of datasets used in natural language processing, particularly for multilingual and low-resource language applications.

Multi-domain Neural Machine Translation (NMT) System for Sinhala, Tamil, and English

Active

PI: Surangika Ranathunga

We propose to create a multi-domain Neural Machine Translation (NMT) System for Sinhala, Tamil, and English, the official languages of Sri Lanka.

Low-Resource Adaptation for NLP

Active

PI: Nisansa de Silva

We propose to advance natural language processing for low-resource settings by leveraging data augmentation, transfer learning, and model adaptation techniques to overcome the scarcity of annotated data and linguistic resources.

Sinhala Language Resources

Active

PI: Nisansa de Silva

We propose to build and analyze Sinhala language resources, datasets, and models to strengthen NLP research for this low-resource language, while connecting it to English and Tamil through bilingual lexicons, embeddings, and cross-lingual methods.