5 papers · 1 filter
TopClustRAG at SIGIR 2025 LiveRAG Challenge
Juli Bakagianni, John Pavlopoulos, Aristidis Likas
We present TopClustRAG, a retrieval-augmented generation (RAG) system developed for the LiveRAG Challenge, which evaluates end-to-end question answering over large-scale web corpor…
SemEval-2025 Task 9: The Food Hazard Detection Challenge
Korbinian Randl, John Pavlopoulos, Aron Henriksson +2
In this challenge, we explored text-based food hazard prediction with long tail distributed classes. The task was divided into two subtasks: (1) predicting whether a web text impli…
Open or Closed LLM for Lesser-Resourced Languages? Lessons from Greek
John Pavlopoulos, Juli Bakagianni, Kanella Pouli +1
Natural Language Processing (NLP) for lesser-resourced languages faces persistent challenges, including limited datasets, inherited biases from high-resource languages, and the nee…
A Systematic Survey of Natural Language Processing for the Greek Language
Juli Bakagianni, Kanella Pouli, Maria Gavriilidou +1
Comprehensive monolingual Natural Language Processing (NLP) surveys are essential for assessing language-specific challenges, resource availability, and research gaps. However, exi…
Improved Abusive Comment Moderation with User Embeddings
John Pavlopoulos, Prodromos Malakasiotis, Juli Bakagianni +1
Experimenting with a dataset of approximately 1.6M user comments from a Greek news sports portal, we explore how a state of the art RNN-based moderation method can be improved by a…