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arXiv · 2010.13737

Real-Time Edge Classification: Optimal Offloading under Token Bucket Constraints

Ayan Chakrabarti·Roch Guérin·Chenyang Lu·Jiangnan Liu
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Abstract

To deploy machine learning-based algorithms for real-time applications with strict latency constraints, we consider an edge-computing setting where a subset of inputs are offloaded to the edge for processing by an accurate but resource-intensive model, and the rest are processed only by a less-accurate model on the device itself. Both models have computational costs that match available compute resources, and process inputs with low-latency. But offloading incurs network delays, and to manage these delays to meet application deadlines, we use a token bucket to constrain the average rate and burst length of transmissions from the device. We introduce a Markov Decision Process-based framework to make offload decisions under these constraints, based on the local model's confidence and the token bucket state, with the goal of minimizing a specified error measure for the application. Beyond isolated decisions for individual devices, we also propose approaches to allow multiple devices connected to the same access switch to share their bursting allocation. We evaluate and analyze the policies derived using our framework on the standard ImageNet image classification benchmark.

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Ayan Chakrabarti, Roch Guérin, Chenyang Lu, Jiangnan Liu. 2020-11-05. Real-Time Edge Classification: Optimal Offloading under Token Bucket Constraints. https://arxiv.org/abs/2010.13737

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