Alyas: Evidence-Grounded Synthetic Populations for Simulated Social and Market Research

Luigi Petrucco, Samuel Bortolin, Elena Leonelli, Eric Suardi, Elena Zorzi, Daniele Miorandi, Davide Piazza


Abstract
Large language models are increasingly used in social-science and market research to stand in for human respondents, exploring questions ahead of fieldwork or piloting instruments. Existing systems address one facet at a time (a population’s demographics, an individual’s profile, or an answer distribution elicited from a single prompt), and few serve users without social-science training. We present Alyas, a research-simulation platform in which an agentic methodologist assistant guides the user from a research goal to a study design, laid out as a branching graph of research artifacts, and simulates its field phase over a synthetic population grounded in institutional statistical sources. On held-out Italian and US microdata, the generated populations reconstruct demographic structure the engine was not given, and, on the Italian microdata, profile-conditioned respondents answer close to the real subgroups they simulate.
Anthology ID:
2026.emnlp-demos.30
Volume:
Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing: System Demonstrations
Month:
October
Year:
2026
Address:
Budapest, Hungary
Editors:
Sweta Agrawal, Alberto Abad
Venue:
EMNLP
SIG:
SIGDAT
Publisher:
Association for Computational Linguistics
Note:
Pages:
302–309
Language:
URL:
https://aclanthology.org/2026.emnlp-demos.30/
DOI:
Bibkey:
Cite (ACL):
Luigi Petrucco, Samuel Bortolin, Elena Leonelli, Eric Suardi, Elena Zorzi, Daniele Miorandi, and Davide Piazza. 2026. Alyas: Evidence-Grounded Synthetic Populations for Simulated Social and Market Research. In Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing: System Demonstrations, pages 302–309, Budapest, Hungary. Association for Computational Linguistics.
Cite (Informal):
Alyas: Evidence-Grounded Synthetic Populations for Simulated Social and Market Research (Petrucco et al., EMNLP 2026)
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PDF:
https://aclanthology.org/2026.emnlp-demos.30.pdf