AILS-NTUA at SemEval-2024 Task 9: Cracking Brain Teasers: Transformer
  Models for Lateral Thinking Puzzles
Ioannis Panagiotopoulos Giorgos Filandrianos Maria Lymperaiou Giorgos Stamou
In this paper, we outline our submission for the SemEval-2024 Task 9
competition: 'BRAINTEASER: A Novel Task Defying Common Sense'. We engage in
both sub-tasks: Sub-task A-Sentence Puzzle and Sub-task B-Word Puzzle. We
evaluate a plethora of pre-trained transformer-based language models of
different sizes through fine-tuning. Subsequently, we undertake an analysis of
their scores and responses to aid future researchers in understanding and
utilizing these models effectively. Our top-performing approaches secured
competitive positions on the competition leaderboard across both sub-tasks. In
the evaluation phase, our best submission attained an average accuracy score of
81.7% in the Sentence Puzzle, and 85.4% in the Word Puzzle, significantly
outperforming the best neural baseline (ChatGPT) by more than 20% and 30%
respectively.