Planning for Success: Exploring LLM Long-term Planning Capabilities in Table Understanding

Thi-Nhung Nguyen, Hoang Ngo, Dinh Phung, Thuy-Trang Vu, Dat Quoc Nguyen


Abstract
Table understanding is key to addressing challenging downstream tasks such as table-based question answering and fact verification. Recent works have focused on leveraging Chain-of-Thought and question decomposition to solve complex questions requiring multiple operations on tables. However, these methods often suffer from a lack of explicit long-term planning and weak inter-step connections, leading to miss constraints within questions. In this paper, we propose leveraging the long-term planning capabilities of large language models (LLMs) to enhance table understanding. Our approach enables the execution of a long-term plan, where the steps are tightly interconnected and serve the ultimate goal, an aspect that methods based on Chain-of-Thought and question decomposition lack. In addition, our method effectively minimizes the inclusion of unnecessary details in the process of solving the next short-term goals, a limitation of methods based on Chain-of-Thought. Extensive experiments demonstrate that our method outperforms strong baselines and achieves state-of-the-art performance on WikiTableQuestions and TabFact datasets.
Anthology ID:
2025.conll-1.6
Volume:
Proceedings of the 29th Conference on Computational Natural Language Learning
Month:
July
Year:
2025
Address:
Vienna, Austria
Editors:
Gemma Boleda, Michael Roth
Venues:
CoNLL | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
81–92
Language:
URL:
https://preview.aclanthology.org/acl25-workshop-ingestion/2025.conll-1.6/
DOI:
Bibkey:
Cite (ACL):
Thi-Nhung Nguyen, Hoang Ngo, Dinh Phung, Thuy-Trang Vu, and Dat Quoc Nguyen. 2025. Planning for Success: Exploring LLM Long-term Planning Capabilities in Table Understanding. In Proceedings of the 29th Conference on Computational Natural Language Learning, pages 81–92, Vienna, Austria. Association for Computational Linguistics.
Cite (Informal):
Planning for Success: Exploring LLM Long-term Planning Capabilities in Table Understanding (Nguyen et al., CoNLL 2025)
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PDF:
https://preview.aclanthology.org/acl25-workshop-ingestion/2025.conll-1.6.pdf