1 citations · 1 across the 3 of their papers we have counts for
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Building Open-Retrieval Conversational Question Answering Systems by Generating Synthetic Data and Decontextualizing User Questions
Christos Vlachos, Nikolaos Stylianou, Alexandra Fiotaki +4
We consider open-retrieval conversational question answering (OR-CONVQA), an extension of question answering where system responses need to be (i) aware of dialog history and (ii)…
GreekBarBench: A Challenging Benchmark for Free-Text Legal Reasoning and Citations
Odysseas S. Chlapanis, Dimitrios Galanis, Nikolaos Aletras +1
We introduce GreekBarBench, a benchmark that evaluates LLMs on legal questions across five different legal areas from the Greek Bar exams, requiring citations to statutory articles…
AUEB-Archimedes at RIRAG-2025: Is obligation concatenation really all you need?
Ioannis Chasandras, Odysseas S. Chlapanis, Ion Androutsopoulos
This paper presents the systems we developed for RIRAG-2025, a shared task that requires answering regulatory questions by retrieving relevant passages. The generated answers are e…
Comparing Data Augmentation Methods for End-to-End Task-Oriented Dialog Systems
Christos Vlachos, Themos Stafylakis, Ion Androutsopoulos
Creating effective and reliable task-oriented dialog systems (ToDSs) is challenging, not only because of the complex structure of these systems, but also due to the scarcity of tra…