Welcome to the Computational Linguistics Group at Saarland University!

Our group, led by Prof. Dr. Alexander Koller, is one of the nine research groups of the Department of Language Science and Technology (LST) at Saarland University. The department is part of the Saarland Informatics Campus, one of the strongest academic research centers for computer science in Europe.

We are interested in a number of topics in computational linguistics including syntactic and semantic parsing, planning and reasoning with LLMs, and NLG and dialogue. A lot of research in our group combines neural and symbolic models of language, and we are proud participants in the Research Training Group “Neuroexplicit Models of Language, Vision, and Action”. We have laid out some critical and constructive thoughts on learning meaning from text in the octopus paper.

The group has developed fast and accurate semantic parsers that work across different styles of semantic representations and perform well on compositional generalization. We have also developed the Alto system for efficient parsing and generation with Interpreted Regular Tree Grammars, which generalize over many different grammar formalisms. The group has helped pioneer the large-scale evaluation of interactive NLG systems and maintains the DialogOS system for rapidly developing spoken dialogue systems.