EU-U.S. Trade and Technology Council
Working Group 1: Technology Standards
Subgroup on AI Taxonomy & Terminology
EU-U.S. Terminology and Taxonomy for Artificial Intelligence
Second Edition
Delivering on the commitments outlined in the first edition of the EU-U.S. Terminology and Taxonomy
for Artificial Intelligence (henceforth, the first edition), EU and U.S. AI experts from the EU-US Trade
and Technology Council (TTC) Working Group 1 (WG1) sub-group on AI Taxonomy and Terminology
have developed a second edition on the occasion of the Sixth EU-U.S. TTC Ministerial (TTC6).
After a preliminary analysis of external input collected through a call for comments and a series of
internal consultations, the WG1 experts added 13 new terms and amended 24 terms from the first edition
in the development of the second edition.
As stated in the EU-U.S. Trade and Technology Council (TTC) Third Ministerial Statement, the first
Joint Roadmap on Evaluation and Measurement Tools for Trustworthy AI and Risk Management (AI
Roadmap) serves to inform the approaches to AI risk management and trustworthy AI on both sides of the
Atlantic, and advance collaborative approaches in international standards bodies related to AI. Following
the Roadmap suggestions for concrete activities aimed at aligning EU and U.S. risk-based approaches, the
EU and U.S. worked together to prepare an initial draft on AI terminologies and taxonomies. On the
occasion of the Fourth EU-U.S. TTC Ministerial (TTC4), members from the EU and U.S. presented the
first edition. A total number of 65 terms were defined, with references to key documents from the EU, the
United States, and other scholarly sources.
Through the European Commission and the National Institute of Standards and Technology (NIST),
external experts had the opportunity to provide their input on the first edition between October 27, 2023
and November 24, 2023. The call for input was published through the European Commission’s
Directorate General for Communications Networks, Content and Technology (DG CNECT) and through
NIST’s dedicated “AI Policy Contributions” page.
By soliciting input from a broader network of experts, the document can better reflect diverse
perspectives and expertise contributing valuable insights to enhance the overall quality of the work
undertaken by the experts of WG1.
The enclosed document reflects an iterative process which both incorporated expert input—to the degree
the input corresponded with the previously defined criteria and methodology for the development of the
Terminology and Taxonomy—and leveraged the WG1 experts to refine and expand the document.
The WG1 experts Jesse Dunietz (NIST), Gry Hasselbalch (InTouchAI.EU), Irina Orssich (DG CNECT, European
Commission), Andrea Renda (CEPS), Reva Schwartz (NIST) and Elham Tabassi (NIST). The work of the experts was supported
by Camille Ford (CEPS), Robert Praas (CEPS), Krisstina Rao (InTouchAI.EU), Robert Scholz (DG CNECT) and Freddy Trinh
(DG CNECT).
