Computational Linguistics and Language Technology Lab

Bridging NLP, Theoretical Linguistics and Neural-Symbolic AI

University of Crete ยท Department of Philology

Research Focus

Bridging theoretical linguistics, computational methods, and neural-symbolic AI to advance language technology

About the Lab

The Computational Linguistics and Language Technology Lab (CLLT) is the only NLP lab at the University of Crete, uniquely positioned at the intersection of theoretical linguistics, computer science, and cognitive science.

CLLT specializes in NLP and linguistically informed neural-symbolic AI, bringing formal linguistic rigor to modern computational approaches. We believe that deep theoretical understanding enhances machine learning systems, particularly for under-resourced languages and complex semantic phenomena.

We maintain active research programs in Greek NLP resources, natural language inference with proof assistants, linguistic distance studies, and digital humanities applications. The lab is led by Professor Stergios Chatzikyriakidis and collaborates extensively with leading institutions.

Featured Research

Highlighting recent achievements at the intersection of linguistic theory and computation

2024 Dataset

OYXOY: Modern Greek NLP Test Suite

First multi-label NLI dataset accounting for semantic ambiguity. 1,763 inference pairs with 6,896 word senses. Published at Findings of EACL 2024.

2025 Monograph

Theories of Types and the Structure of Meaning

Cambridge Elements in Semantics. Comprehensive treatment of type-theoretical approaches to natural language semantics, bridging formal linguistics and computational implementation.

2025 AI+Humanities

RAG-Enhanced Greek Poetry Generation

Combining retrieval-augmented generation with formal verification for modern Greek interwar poetry. Published at NLP4DH 2025 (NAACL).

Research Themes

Our Research Philosophy

"We believe that symbolic and neural computation are complementary, not competing approaches. The symbolic provides the precision and interpretability that pure machine learning lacks, while neural models offer the scalability and robustness that symbolic systems need. Our work aims at the synthesis of these approaches, developing systems that are both powerful and explainable, in effect systems with properties neededessential for building AI we can trust."

โ€” CLLT Research Statement

Join Our Research Community

We welcome graduate students, postdocs, and collaborators interested in computational linguistics, NLP, and language technology at the intersection of theory and practice.