ArchiDocGen: Multi-Agent Framework for Expository Document Generation in the Architectural Industry

Junjie Jiang, Haodong Wu, Yongqi Zhang, Songyue Guo, Bingcen Liu, Caleb Chen Cao, Ruizhe Shao, Chao Guan, Peng Xu, Lei Chen

Abstract: The architectural industry produces exten- sive documents, including method state- ments—expository documents that integrate multi-source data into actionable guidance. Manual drafting however is labor-intensive and time-consuming. This paper introduces Archi- DocGen, a multi-agent framework automating method statement generation. Unlike tradi- tional approaches relying on static templates or single-pass generation, ArchiDocGen decom- poses the task into three steps: outline gener- ation, section-based content generation, and polishing, each handled by specialized agents. To provide domain expertise, ArchiDocGen employs a section-based retriever to fetch and synthesize relevant documents from its custom knowledge base. Each section is generated through iterative reasoning of a section-based chain-of-thought (SeCoT) scheme, followed by refinement to meet professional standards. To evaluate the generated method statements, we partner with the industry to establish a multi- dimensional evaluation system by combining automatic and empirical methods. Experiments show that ArchiDocGen achieves 4.38 Con- tentScore, excelling in specialization, complete- ness, organization, and clarity. Additionally, a web-based application for ArchiDocGen is de- veloped and deployed with industry partners.