In this blog series, international experts on the topic of analyzing online job advertisements present their work. The presentations were given at the 9th OJA Forum, which is jointly organized twice a year by the Federal Institute for Vocational Education and Training and the Bertelsmann Stiftung. Topics at the 9th OJA Forum included the further development of existing taxonomies. Taxonomies are systematic classification systems used to organize information according to specific criteria – for example, to classify occupations, skills, or qualifications. Another key topic was how to link training content with labor market requirements. In this video blog series, the presentations will be published one after the other. The third talk is by Mauro Pelucchi from Lightcast.  

Building and Evolving Green and AI Skill Taxonomies from Online Job Postings 

In a fast-changing labour market, new skills constantly emerge, particularly in areas like green technologies and artificial intelligence, posing a challenge to traditional taxonomies. This talk will outline how Lightcast leverages large-scale data from online job postings to develop, maintain, and refine its Green and AI Skills Taxonomies. Drawing from over 3 billion global postings, we identify emerging competencies, evaluate whether they require new categories or can be integrated into existing frameworks, and reprocess historical data to track their evolution over time. The session will cover the full lifecycle of taxonomy development: from the definition and classification of new skills to the use of algorithmic detection and expert validation, and finally to the methodological decisions behind updates and reweighting. It will also share insights on how these evolving taxonomies are used in practice by policymakers, educators, and employers, to inform training design, workforce development, and strategic planning. The goal is to show how online data can complement traditional sources, making skills intelligence more agile, granular, and aligned with market needs.

 

 

Here you can find all videos from this series:

9th OJA Forum (Part 1) – What to add

9th OJA Forum (Part 2) – ESCO development

9th OJA Forum (Part 3) – Building and Evolving Green and AI Skill Taxonomies