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Digital Twins Lab

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The Digital Twins Lab explores digital twin technology and its real-world use cases with a commitment to transparency, independence, interdisciplinary collaboration, rigor, and accessibility. We develop and evaluate methods, datasets, and tools that help researchers and practitioners understand when digital twins work, when they fail, and how they can be deployed responsibly.

Digital twin technology leverages large language models to simulate human behavior and complex systems, enabling rapid testing, experimentation, and iteration. It has the potential to transform marketing, social science, behavioral research, and business operations, among many other domains. More broadly, digital twins enable high-precision personalization, efficient synthetic data generation, and scalable reinforcement-learning environments—forming a foundation for world models and effective human–AI collaboration.

Our research spans measurement and evaluation, human–AI alignment, domain-specific applications, and reproducible research practices. We emphasize impact beyond the lab by producing open resources, clear reporting standards, and public-facing artifacts that support broad adoption, critical scrutiny, and responsible use.

We are hiring predocs and postdocs. For more information, please contact [email protected].

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Digital Twins Lab Interest Form

This form below allows you to express interest in Columbia Business School's Digital Twins Lab.

View Interest Form

Available Job Openings

The Digital Twins Lab at Columbia Business School invites applications to engage in research related to digital twins, AI agents, and simulation-based decision-making.

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Research

Resources

Datasets

  • Twin-2K-500 Dataset (Hugging Face)
  • Twin-2K-500-Mega-Study Dataset (Hugging Face)

ExploraTwin

Upload your Qualtrics survey or ask any question directly and get answers from 2,000 digital twins on the ExploraTwin platform

Publications & Preprints

January 2026

Digital Twins as Funhouse Mirrors: Five Key Distortions 
Tianyi Peng et al.

November 2025

E-GEO: A Testbed for Generative Engine Optimization in E-Commerce
Puneet S Bagga, Vivek F Farias, Tamar Korkotashvili, Tianyi Peng, Yuhang Wu

September 2025

Leveraging LLMs to Improve Experimental Design: A Generative Stratification Approach
Seungwoo Kim · arXiv

2025

Twin-2K-500: A Data Set for Building Digital Twins of over 2,000 People Based on Their Answers to over 500 Questions
Olivier Toubia et al. · Marketing Science

2025

Prompt Architecture Induces Methodological Artifacts in Large Language Models
Melanie Brucks & Olivier Toubia · PLOS ONE

2025

LLM Generated Persona Is a Promise with a Catch
Ang Li, Haozhe Chen, Hongseok Namkoong & Tianyi Peng · NeurIPS 2025 (Position Paper)

2025

AI Agents for Web Testing: A Case Study in the Wild
Naimeng Ye, Xiao Yu, Ruize Xu, Tianyi Peng, Zhou Yu · NeurIPS 2025 Workshop on Bridging Language, Agent, and World Models

December 2023

The Challenge of Using LLMs to Simulate Human Behavior: A Causal Inference Perspective
arXiv

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