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- W4384920252 abstract "Movement paths are used widely in intelligent transportation and smart city applications. To serve such applications, path representation learning aims to provide compact representations of paths that enable efficient and accurate operations when used for different downstream tasks such as path ranking and travel cost estimation. In many cases, it is attractive that the path representation learning is lightweight and scalable; in resource-limited environments and under green computing limitations, it is essential. Yet, existing path representation learning studies focus on accuracy and pay at most secondary attention to resource consumption and scalability. We propose a lightweight and scalable path representation learning framework, termed LightPath, that aims to reduce resource consumption and achieve scalability without affecting accuracy, thus enabling broader applicability. More specifically, we first propose a sparse auto-encoder that ensures that the framework achieves good scalability with respect to path length. Next, we propose a relational reasoning framework to enable faster training of more robust sparse path encoders. We also propose global-local knowledge distillation to further reduce the size and improve the performance of sparse path encoders. Finally, we report extensive experiments on two real-world datasets to offer insight into the efficiency, scalability, and effectiveness of the proposed framework." @default.
- W4384920252 created "2023-07-21" @default.
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- W4384920252 date "2023-07-19" @default.
- W4384920252 modified "2023-09-24" @default.
- W4384920252 title "LightPath: Lightweight and Scalable Path Representation Learning" @default.
- W4384920252 doi "https://doi.org/10.48550/arxiv.2307.10171" @default.
- W4384920252 hasPublicationYear "2023" @default.
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