Towards Better Understanding of Program-of-Thought Reasoning in Cross-Lingual and Multilingual Environments
Patomporn Payoungkhamdee, Pume Tuchinda, Jinheon Baek, Samuel Cahyawijaya, Can Udomcharoenchaikit, Potsawee Manakul, Peerat Limkonchotiwat, Ekapol Chuangsuwanich, Sarana Nutanong
Abstract
Multi-step reasoning is essential for large language models (LLMs), yet multilingual performance remains challenging. While Chain-of-Thought (CoT) prompting improves reasoning, it struggles with non-English languages due to the entanglement of reasoning and execution. Program-of-Thought (PoT) prompting separates reasoning from execution, offering a promising alternative but shifting the challenge to generating programs from non-English questions. We propose a framework to evaluate PoT by separating multilingual reasoning from code execution to examine (i) the impact of fine-tuning on question-reasoning alignment and (ii) how reasoning quality affects answer correctness. Our findings demonstrate that PoT fine-tuning substantially enhances multilingual reasoning, outperforming CoT fine-tuned models. We further demonstrate a strong correlation between reasoning quality (measured through code quality) and answer accuracy, highlighting its potential as a test-time performance improvement heuristic.- Anthology ID:
- 2025.findings-acl.817
- Volume:
- Findings of the Association for Computational Linguistics: ACL 2025
- Month:
- July
- Year:
- 2025
- Address:
- Vienna, Austria
- Editors:
- Wanxiang Che, Joyce Nabende, Ekaterina Shutova, Mohammad Taher Pilehvar
- Venues:
- Findings | WS
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 15810–15828
- Language:
- URL:
- https://preview.aclanthology.org/acl25-workshop-ingestion/2025.findings-acl.817/
- DOI:
- Cite (ACL):
- Patomporn Payoungkhamdee, Pume Tuchinda, Jinheon Baek, Samuel Cahyawijaya, Can Udomcharoenchaikit, Potsawee Manakul, Peerat Limkonchotiwat, Ekapol Chuangsuwanich, and Sarana Nutanong. 2025. Towards Better Understanding of Program-of-Thought Reasoning in Cross-Lingual and Multilingual Environments. In Findings of the Association for Computational Linguistics: ACL 2025, pages 15810–15828, Vienna, Austria. Association for Computational Linguistics.
- Cite (Informal):
- Towards Better Understanding of Program-of-Thought Reasoning in Cross-Lingual and Multilingual Environments (Payoungkhamdee et al., Findings 2025)
- PDF:
- https://preview.aclanthology.org/acl25-workshop-ingestion/2025.findings-acl.817.pdf