Research engineer at Ariadne AI Lab, Archimedes AI, Athena RC · PhD student at Athens University of Economics and Business
I am a research engineer at the Ariadne AI Lab of Archimedes AI, Athena RC, and a PhD student at the Athens University of Economics and Business. My work centers on evaluating and improving how large language models reason over legal text, with a focus on Greek: measuring their legal reasoning and citation faithfulness, and building legal agents and other grounded LLM applications for law. I am also interested in what cognitive science reveals about how these models represent meaning.
The Grounding Gap: How LLMs Anchor the Meaning of Abstract Concepts Differently from Humans
Advances in Neural Information Processing Systems (NeurIPS 2026)
GreekBarBench: A Challenging Benchmark for Free-Text Legal Reasoning and Citations
Findings of the ACL: EMNLP 2025, Suzhou, China
AUEB-Archimedes at RIRAG-2025: Is Obligation concatenation really all you need?
1st Regulatory NLP Workshop (RegNLP 2025), pp. 52-58, Abu Dhabi, UAE
LAR-ECHR: A New Legal Argument Reasoning Task and Dataset for Cases of the European Court of Human Rights
Natural Legal Language Processing Workshop (NLLP 2024), Miami, FL
Local Explanations and Self-Explanations for Assessing Faithfulness in Black-box LLMs
13th EETN Conference on AI (SETN 2024) Workshops
Archimedes-AUEB at SemEval-2024 Task 5: LLM explains Civil Procedure
18th International Workshop on Semantic Evaluation (SemEval-2024), Mexico City
Adapted Multimodal BERT with Layer-wise Fusion for Sentiment Analysis
IEEE ICASSP 2023, Rhodes Island, Greece
Research Visit, Columbia University
October to November 2024
Visited Columbia University to work with Professor Christos H. Papadimitriou on how large language models anchor the meaning of abstract words. This collaboration led to the paper The Grounding Gap: How LLMs Anchor the Meaning of Abstract Concepts Differently from Humans, accepted at NeurIPS 2026.
Panhellenic Artificial Intelligence Competition
Organizing committee
Greece's national Artificial Intelligence competition for high-school students. I help design the competition tasks and mentor the students selected to represent Greece at the international competitions.
Gemini-3 Benchmarkathon Blog
Hugging Face blog, November 2025
A Hugging Face community report benchmarking Gemini-3 on legal tasks, including GreekBarBench. I contributed as part of the team.