Classification accuracy improvement for neuromorphic computing systems with one-level precision synapses

TitleClassification accuracy improvement for neuromorphic computing systems with one-level precision synapses
Publication TypeConference Paper
Year of Publication2017
AuthorsY Wang, W Wen, L Song, and H Li
Conference NameProceedings of the Asia and South Pacific Design Automation Conference, Asp Dac
Date Published02/2017
Abstract

Brain inspired neuromorphic computing has demonstrated remarkable advantages over traditional von Neumann architecture for its high energy efficiency and parallel data processing. However, the limited resolution of synaptic weights degrades system accuracy and thus impedes the use of neuromorphic systems. In this work, we propose three orthogonal methods to learn synapses with one-level precision, namely, distribution-aware quantization, quantization regularization and bias tuning, to make image classification accuracy comparable to the state-of-the-art. Experiments on both multi-layer perception and convolutional neural networks show that the accuracy drop can be well controlled within 0.19% (5.53%) for MNIST (CIFAR-10) database, compared to an ideal system without quantization.

DOI10.1109/ASPDAC.2017.7858418