Laboratory for Human-AI Interaction & Psychology

The main goal of the HAIP lab is to enable meaningful and effective human-AI synergy. We pursue this goal along two axes:

Synergistic Human-AI Decision-Making: The goal here is to design AI agents that reason with people rather than for them. For example, such an agent works from a shared, explicit representation of the decision and its reasons, keeps a model of what the person knows and believes, and revises both as the interaction unfolds. To do this, we use a lot of neurosymbolic AI methods, such as combining logic, and computational argumentation with neural-based models.

Human-AI Psychology: We also study how people and AI agents actually reason, both on their own and together. We do this mechanistically (à la neuroscience) and behaviorally (à la cogsci and psychology).



selected publications

  1. EMNLP
    Discourse-Aware Policy Analysis with Argumentation: A Hybrid LLM-Symbolic Framework for Disaster Governance
    Stylianos Loukas Vasileiou and Olga Derendiaeva
    In Conference on Empirical Methods in Natural Language Processing (EMNLP), 2026
  2. COLM
    Do Humans and LLMs Diverge in Belief Revision? Evidence from a Bayesian Analysis
    Stylianos Loukas Vasileiou, Antonio Rago, Maria Vanina Martinez, and 1 more author
    In Conference on Language Modeling (COLM), 2026
  3. KR
    Extracting Verified Action Theories from Informal Specifications via Explanation-Guided Refinement
    Stylianos Loukas Vasileiou, Minh Nguyen, Tran Cao Son, and 2 more authors
    In International Conference on Principles of Knowledge Representation and Reasoning, 2026
  4. AAMAS
    Argumentative Human-AI Decision-Making: Toward AI Agents That Reason With Us, Not For Us
    Stylianos Loukas Vasileiou, Antonio Rago, Francesca Toni, and 1 more author
    In International Conference on Autonomous Agents and Multiagent Systems (AAMAS) BlueSky Track, 2026
  5. NeurIPS
    Model Reconciliation via Cost-Optimal Explanations in Probabilistic Logic Programming
    Yinxu Tang, Stylianos Loukas Vasileiou, Vincent Derkinderen, and 1 more author
    In Advances in Neural Information Processing Systems (NeurIPS), 2025
  6. JAIR
    On Generating Monolithic and Model Reconciling Explanations in Probabilistic Scenarios
    Stylianos Loukas Vasileiou, William Yeoh, Alessandro Previti, and 1 more author
    Journal of Artificial Intelligence Research (JAIR), 2025
  7. AAAI
    Does Your AI Agent Get You? A Personalizable Framework for Approximating Human Models from Argumentation-based Dialogue Traces
    Yinxu Tang, Stylianos Loukas Vasileiou, and William Yeoh
    In Association for the Advancement of Artificial Intelligence (AAAI), 2025
  8. KR
    Dialectical Reconciliation via Structured Argumentative Dialogues
    Stylianos Loukas Vasileiou, Ashwin Kumar, William Yeoh, and 2 more authors
    In International Conference on Principles of Knowledge Representation and Reasoning (KR), 2024
  9. JAIR
    A Logic-based Explanation Generation Framework for Classical and Hybrid Planning Problems
    Stylianos Loukas Vasileiou, William Yeoh, Tran Cao Son, and 3 more authors
    Journal of Artificial Intelligence Research (JAIR), 2022
  10. AAAI
    On Exploiting Hitting Sets For Model Reconciliation
    Stylianos Loukas Vasileiou, Alessandro Previti, and William Yeoh
    In Association for the Advancement of Artificial Intelligence (AAAI), 2021