Open-Source Thesaurus Development for Under-Resourced Languages:a Welsh Case Study

Khallaf, Nouran and Arfon, Elin and El-Haj, Mahmoud and Morris, Jonathan and Knight, Dawn and Rayson, Paul and Hammouda, Tymaa and Jarrar, Mustafa (2023) Open-Source Thesaurus Development for Under-Resourced Languages:a Welsh Case Study. In: Language, Data and Knowledge, 2023-09-122023-09-15.

Full text not available from this repository.


This paper introduces an open-access, user- friendly online thesaurus for the Welsh language, aimed at enriching digital resources for Welsh speakers and learners. Utilising advances in Natural Language Processing (NLP), our approach combines pre-existing word em- beddings, a Welsh semantic tagger, and human evaluation to establish related terms. In this case, an initial list of 250 words was expanded by adding 6,953 synonyms provided by linguists, creating a more extensive foundation for building the gold-standards. With this expanded list, when a user queries a particular word, the thesaurus presents all of its synonyms, allowing them to choose from a wider range of options. This is especially helpful when a user is unsure of the exact word they want to use or wants to explore different ways to ex- press a concept. The resulting thesaurus offers a comprehensive, reliable resource for Welsh language users, fostering enhanced communication and expression. Our work promotes Welsh NLP and showcases NLP’s potential to support under-resourced languages. The thesaurus will be accessible via a bilingual website, and the ac- companying Python code will be available in a bilingual, public GitHub repository, and it will be available as a web service. Our approach presents a more efficient, cost-effective method for thesaurus creation, with potential applicability to other under-resourced languages.

Item Type:
Contribution to Conference (Paper)
Journal or Publication Title:
Language, Data and Knowledge
Uncontrolled Keywords:
Research Output Funding/yes_externally_funded
ID Code:
Deposited By:
Deposited On:
12 Sep 2023 12:30
Last Modified:
31 Oct 2023 15:30