RecGPT-Mobile: On-Device Large Language Models for User Intent Understanding in Taobao Feed Recommendation
This work addresses the high inference cost of cloud-based LLMs for real-time user intent prediction in mobile e-commerce, enabling on-device deployment.
RecGPT-Mobile deploys lightweight LLMs on mobile devices for real-time user intent understanding in e-commerce recommendations, improving next-query prediction accuracy. Online experiments show significant gains in recommendation accuracy.
Predicting a user's next search query from recent interaction behaviors is a critical problem in modern e-commerce systems, particularly in scenarios where user intent evolves rapidly. Large Language Models (LLMs) offer strong semantic reasoning capabilities and have recently been adopted to enhance training data construction for next-query prediction. However, due to resource constraints on mobile devices, existing applications are deployed on cloud servers, resulting in high inference costs. In this paper, we propose RecGPT-Mobile, a framework that designs a lightweight LLM-based intent understanding agent to improve recommendation quality in mobile e-commerce scenarios. By deploying LLMs directly on mobile devices, our approach can capture evolving interests of users more quickly and adjust the recommendation results in real time. Extensive offline analyses and online experiments demonstrate that our method significantly improves the accuracy of recommendation results, laying a practical path for LLM deployment in production-scale recommendation systems on mobile devices, as well as a scalable solution for integrating LLMs into real-world next-query prediction systems.