API-Assisted Code Generation for Question Answering on Varied Table Structures

• URL: http://arxiv.org/abs/2310.14687v1
• Date: Mon, 23 Oct 2023 08:26:28 GMT
• Title: API-Assisted Code Generation for Question Answering on Varied Table Structures
• Authors: Yihan Cao, Shuyi Chen, Ryan Liu, Zhiruo Wang, Daniel Fried
• Abstract summary: A persistent challenge to table question answering (TableQA) by generating executable programs has been adapting to varied table structures. This paper introduces a unified TableQA framework that provides a unified representation for structured tables as multi-index Pandas data frames. To answer complex relational questions with extended program functionality and external knowledge, our framework allows customized APIs that Python programs can call.
• Score: 18.65003956496509
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: A persistent challenge to table question answering (TableQA) by generating executable programs has been adapting to varied table structures, typically requiring domain-specific logical forms. In response, this paper introduces a unified TableQA framework that: (1) provides a unified representation for structured tables as multi-index Pandas data frames, (2) uses Python as a powerful querying language, and (3) uses few-shot prompting to translate NL questions into Python programs, which are executable on Pandas data frames. Furthermore, to answer complex relational questions with extended program functionality and external knowledge, our framework allows customized APIs that Python programs can call. We experiment with four TableQA datasets that involve tables of different structures -- relational, multi-table, and hierarchical matrix shapes -- and achieve prominent improvements over past state-of-the-art systems. In ablation studies, we (1) show benefits from our multi-index representation and APIs over baselines that use only an LLM, and (2) demonstrate that our approach is modular and can incorporate additional APIs.

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