arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1909.09153cs.LGstat.ML
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密度编码实现资源高效的随机连接神经网络

Density Encoding Enables Resource-Efficient Randomly Connected Neural Networks

University of California, Berkeley(加州大学伯克利分校);Research Institutes of Sweden(瑞典研究所);Netlight Consulting AB(Netlight咨询公司);Umeå University(于默奥大学);Luleå University of Technology(吕勒奥理工大学)

Denis Kleyko, Mansour Kheffache, E. Paxon Frady, Urban Wiklund, Evgeny Osipov

摘要:

从理论和应用的角度来看,在资源受限的边缘设备上部署机器学习算法是一个重要的挑战。在这篇文章中,我们专注于资源高效的随机连接神经网络,称为随机向量函数链接(RVFL)网络,因为它们简单的设计和极快的训练时间使它们对于解决许多应用分类任务非常有吸引力。我们建议通过随机计算领域中已知的基于密度的编码来表示输入特征,并使用超维计算领域中的绑定和捆绑操作来获得隐藏神经元的激活。使用来自UCI机器学习库的121个真实世界数据集的集合,我们根据经验表明,所提出的方法比传统的RVFL具有更高的平均准确性。我们还表明,它是可能的,以表示读出矩阵,仅使用整数在有限的范围内的准确性损失最小。在这种情况下,所提出的方法仅对小的n位整数进行操作,这导致计算效率高的架构。最后,通过硬件现场可编程门阵列(FPGA)的实现,我们表明,这种方法消耗的能量比传统的RVFL约少11倍。

英文摘要:

The deployment of machine learning algorithms on resource-constrained edge devices is an important challenge from both theoretical and applied points of view. In this article, we focus on resource-efficient randomly connected neural networks known as Random Vector Functional Link (RVFL) networks since their simple design and extremely fast training time make them very attractive for solving many applied classification tasks. We propose to represent input features via the density-based encoding known in the area of stochastic computing and use the operations of binding and bundling from the area of hyperdimensional computing for obtaining the activations of the hidden neurons. Using a collection of 121 real-world datasets from the UCI Machine Learning Repository, we empirically show that the proposed approach demonstrates higher average accuracy than the conventional RVFL. We also demonstrate that it is possible to represent the readout matrix using only integers in a limited range with minimal loss in the accuracy. In this case, the proposed approach operates only on small n-bits integers, which results in a computationally efficient architecture. Finally, through hardware Field-Programmable Gate Array (FPGA) implementations, we show that such an approach consumes approximately eleven times less energy than that of the conventional RVFL.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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