arXiv AI By Cynthia Dong, Hong Jia, Young D. Kwon, Georgios Rizos, Cecilia Mascolo

LeanTTA: A Backpropagation-Free and Stateless Approach to Quantized Test-Time Adaptation on Edge Devices

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LeanTTA is a backpropagation-free, stateless framework for quantized test-time adaptation designed for edge devices. It updates normalization statistics on the fly, avoiding large batches and historical data, and combines partial adaptation with quantized module fusion to reduce computational costs. Experiments across sensor modalities show a 15.7% error reduction, peak memory usage of only 11.2 MB for ResNet18, and fast adaptation within an order of magnitude of normal inference speeds on-device.

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