• Leader: Marie-Catherine de Marneffe (Belgium)
• Vice-leader: Abigail Walsh (Ireland)

This WG is transversal to WGs 1-3 and will focus on how the Action serves inter- and intra-linguistic diversity. Its activities will overlap with the 3 other WGs in:

1. Networking for diversity:
   • bringing together pre-existing groups dedicated to NLP-applicable universality,
   • integrating experts of (notably low-resourced) languages not yet covered by these groups,
   • integrating experts in linguistic typology;
2. Quantifying diversity:
   • designing measures of inter- and intra-linguistic diversity in language resources and tools,
   • using these measures to quantify diversity in UD and PARSEME corpora;
3. Promoting diversity:
   • procedures for better use of the existing resources, based on their estimated diversity,
   • selecting new data to be annotated, so as to favour intra-linguistic diversity,
   • designing evaluation scenarios which favour tools performing well on rare and diverse phenomena and low resourced languages,
   • integrating and training new experts dedicated to low-resourced and endangered languages,
   • validating the unified annotation guidelines (WG1) and lexicon formats (WG2) against newly included languages and defining new language-specific categories and extensions, if needed,
   • coordinating of the creation and enhancement of annotated corpora and lexica for low-resourced languages,
   • discovering and analysing rare linguistic phenomena, and describing them in resources and tools,
   • coordination of the development of NLP tools (WG3) for low-resourced and endangered languages.

• WG4 Meeting 1 slides and discussion summary - 16-17 March 2023, Paris-Saclay University, France (co-located with UniDive 1st general meeting,