PlanGPT:

Enhancing Urban Planning with Tailored Language Model and Efficient Retrieval

1 He Zhu, 1 Wenjia Zhang*, 1 Nuoxian Huang, 1 Boyang Li, 1 Luyao Niu, 4 Zipei Fan,
1 Tianle Lun, 1 Yicheng Tao, 1 Junyou Su, 1 Gongzhao Ya, 23 Chengyu Fang,
1 Behavioral and Spatial AI Lab, Peking University
2 China Academy of Urban Planning & Design
3 Technical University of Munich and 4 University of Tokyo
Paper Code Dataset

Abstract

In the field of urban planning, general-purpose large language models often struggle to meet the specific needs of planners. Tasks like generating urban planning texts, retrieving related information, and evaluating planning documents pose unique challenges. To enhance the efficiency of urban professionals and overcome these obstacles, we introduce PlanGPT, the first specialized Large Language Model tailored for urban and spatial planning. Developed through collaborative efforts with institutions like the Chinese Academy of Urban Planning, PlanGPT leverages a customized local database retrieval framework, domain-specific fine-tuning of base models, and advanced tooling capabilities. Empirical tests demonstrate that PlanGPT has achieved advanced performance, delivering responses of superior quality precisely tailored to the intricacies of urban planning.


Technical Description


• Architecture

Teaser

Figure 1: PlanGPT Architecture.


Application


城悟

The Chengwu Large Language Model is an advanced language model developed collaboratively by BSAI and the Beijing Municipal Institute of City Planning & Design, specifically designed for urban planning applications. Unveiled at the Urban Planning Sub-forum of the 2024 Global Digital Economy Conference, the Chengwu Large Language Model demonstrates strong expertise in the field and provides an intuitive, user-friendly interaction experience. It supports both text and voice-based interactions, allowing users to engage seamlessly with the model.


Coplanner

Coplanner is a large language model specialized in urban planning, jointly developed by BSAI and the Shenzhen branch of the China Academy of Urban Planning and Design. It is designed to support urban planners and experts in related fields with a wide range of intelligent functions, including professional Q&A, knowledge base retrieval, document review, and real-time online search. Coplanner not only provides precise planning advice and professional answers but also assists in document review, offering comprehensive and reliable technical support. This tool aims to make urban planning work more intelligent and efficient.