Active Computing & AI Education & Skills

Geo-R2LLM

In plain English

AI plain-English summary

A navigation app that understands not just where you are, but what you see and why that matters—that is the goal of this project. Large language models (LLMs) like those behind ChatGPT can now answer questions and generate text, but they struggle with geographic information. A standard LLM might tell you the distance between two streets, but it cannot look at a photo of a flooded underpass and reroute you around it, nor can it reason that a road closure at 5 PM on a Friday will snarl traffic for miles. The problem is that current LLMs rely on text alone, while geographic knowledge lives in maps, satellite images, live traffic feeds, and historical weather data—all in different formats. This project will build a new kind of geographic LLM that can retrieve and reason across multiple external sources—images, maps, sensor data—before generating a response. The researchers will integrate this into a prototype navigation system for complex urban environments. If successful, the system could give context-aware directions that account for real-time hazards, accessibility needs, or changing conditions. Beyond navigation, the same approach could improve logistics, emergency response, and urban planning—any field where location and context matter.

View original technical description
Recent Artificial Intelligence (AI) research has given rise to a paradigm shift brought by Large Language Models (LLMs). Though LLMs arose from research in Natural Language Processing (NLP), it is well-known today that zero-shot and few-shot transfer learning methodologies as well as novel prompting strategies make their deployment possible beyond the NLP field, achieving impressive performance on a significant range of domains and downstream tasks. However, the deployment of LLMs in geographic information systems is still in its infancy. The Geo-R2LLM project aims to create a novel paradigm for building knowledgeable and multimodal geographic LLMs by rethinking LLMs generation mode with retrieval and reasoning over multiple multimodal external knowledge sources to ground predictions. The improved multimodal geographic LLMs will be integrated in a geospatio-temporal AI (GeoAI) system prototype and evaluated on a pilot application related to context-aware navigation systems in a complex urban environment. Navigation services can be considered as one of the most critical and widely adopted location-based services in modern society, hence the project has potentially strong impact also outside of academia. This research will lead to fundamental advances in multiple disciplines spanning GeoAI, spatio-temporal reasoning, information retrieval, and natural language understanding, laying the groundwork for more effective AI platforms for various domains that relate to geography and geographical information science.

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Researchers

Anthony Cohn (Principal Investigator)

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Original classification

Research Grant

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