Smart City Gnosys
Smart city article details
| Title | Promptst: Prompt-Enhanced Spatio-Temporal Multi-Attribute Prediction |
|---|---|
| ID_Doc | 43449 |
| Authors | Zhang Z.; Zhao X.; Liu Q.; Zhang C.; Ma Q.; Wang W.; Zhao H.; Wang Y.; Liu Z. |
| Year | 2023 |
| Published | International Conference on Information and Knowledge Management, Proceedings |
| DOI | http://dx.doi.org/10.1145/3583780.3615016 |
| Abstract | In the era of information explosion, spatio-temporal data mining serves as a critical part of urban management. Considering the various fields demanding attention, e.g., traffic state, human activity, and social event, predicting multiple spatio-temporal attributes simultaneously can alleviate regulatory pressure and foster smart city construction. However, current research can not handle the spatio-temporal multi-attribute prediction well due to the complex relationships between diverse attributes. The key challenge lies in how to address the common spatio-temporal patterns while tackling their distinctions. In this paper, we propose an effective solution for spatio-temporal multi-attribute prediction, PromptST. We devise a spatio-temporal transformer and a parameter-sharing training scheme to address the common knowledge among different spatiotemporal attributes. Then, we elaborate a spatio-temporal prompt tuning strategy to fit the specific attributes in a lightweight manner. Through the pretrain and prompt tuning phases, our PromptST is able to enhance the specific spatio-temoral characteristic capture by prompting the backbone model to fit the specific target attribute while maintaining the learned common knowledge. Extensive experiments on real-world datasets verify that our PromptST attains state-of-the-art performance. Furthermore, we also prove PromptST owns good transferability on unseen spatio-temporal attributes, which brings promising application potential in urban computing. The implementation code is available to ease reproducibility. © 2023 Copyright held by the owner/author(s). Publication rights licensed to ACM. ACM ISBN 979-8-4007-0124-5/23/10...$15.00. |
| Author Keywords | multi-attribute prediction; prompt learning; smart city; spatio-temporal prediction |
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