Adaptive Originality Filtering: Rejection Based Prompting and RiddleScore for Culturally Grounded Multilingual Riddle Generation

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Hauptverfasser: Le, Duy, Ziti, Kent, Girard-Sun, Evan, Bouhaya, Bakr, O'Brien, Sean, Sharma, Vasu, Zhu, Kevin
Format: Preprint
Veröffentlicht: 2025
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author Le, Duy
Ziti, Kent
Girard-Sun, Evan
Bouhaya, Bakr
O'Brien, Sean
Sharma, Vasu
Zhu, Kevin
author_facet Le, Duy
Ziti, Kent
Girard-Sun, Evan
Bouhaya, Bakr
O'Brien, Sean
Sharma, Vasu
Zhu, Kevin
contents Language models are increasingly tested on multilingual creativity, demanding culturally grounded, abstract generations. Standard prompting methods often produce repetitive or shallow outputs. We introduce Adaptive Originality Filtering (AOF), a prompting strategy that enforces novelty and cultural fidelity via semantic rejection. To assess quality, we propose RiddleScore, a metric combining novelty, diversity, fluency, and answer alignment. AOF improves Distinct-2 (0.915 in Japanese), reduces Self-BLEU (0.177), and raises RiddleScore (up to +57.1% in Arabic). Human evaluations confirm fluency, creativity, and cultural fit gains. However, improvements vary: Arabic shows greater RiddleScore gains than Distinct-2; Japanese sees similar changes. Though focused on riddles, our method may apply to broader creative tasks. Overall, semantic filtering with composite evaluation offers a lightweight path to culturally rich generation without fine-tuning.
format Preprint
id arxiv_https___arxiv_org_abs_2508_18709
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Adaptive Originality Filtering: Rejection Based Prompting and RiddleScore for Culturally Grounded Multilingual Riddle Generation
Le, Duy
Ziti, Kent
Girard-Sun, Evan
Bouhaya, Bakr
O'Brien, Sean
Sharma, Vasu
Zhu, Kevin
Computation and Language
Language models are increasingly tested on multilingual creativity, demanding culturally grounded, abstract generations. Standard prompting methods often produce repetitive or shallow outputs. We introduce Adaptive Originality Filtering (AOF), a prompting strategy that enforces novelty and cultural fidelity via semantic rejection. To assess quality, we propose RiddleScore, a metric combining novelty, diversity, fluency, and answer alignment. AOF improves Distinct-2 (0.915 in Japanese), reduces Self-BLEU (0.177), and raises RiddleScore (up to +57.1% in Arabic). Human evaluations confirm fluency, creativity, and cultural fit gains. However, improvements vary: Arabic shows greater RiddleScore gains than Distinct-2; Japanese sees similar changes. Though focused on riddles, our method may apply to broader creative tasks. Overall, semantic filtering with composite evaluation offers a lightweight path to culturally rich generation without fine-tuning.
title Adaptive Originality Filtering: Rejection Based Prompting and RiddleScore for Culturally Grounded Multilingual Riddle Generation
topic Computation and Language
url https://arxiv.org/abs/2508.18709