超低功耗本地信号处理是始终安装在设备上的边缘应用的关键方面。尖刺神经网络的神经形态处理器显示出很大的计算能力,同时根据该领域的需要满足有限的电力预算。在这项工作中,我们提出了尖峰神经动力学作为扩张时间卷积的自然替代品。我们将这个想法扩展到WaveSense,这是一个由Wavenet Architects的激发灵感的尖峰神经网络。WaveSense使用简单的神经动力学,固定时间常数和简单的前馈结构,因此特别适用于神经形态实现。我们在几个数据集中测试此模型的功能,以用于关键字斑点。结果表明,该网络击败了其他尖刺神经网络的领域,并达到了诸如CNN和LSTM的人工神经网络的最先进的性能。
translated by 谷歌翻译
使用动态视觉传感器的基于事件的感测是在低功耗视觉应用中获得牵引力。尖峰神经网络与基于事件的数据的稀疏性质良好,并在低功率神经胸壁上进行部署。作为一个新生的领域,尖刺神经网络到潜在恶意的对抗性攻击的敏感性迄今为止受到重视很少。在这项工作中,我们展示了白盒对抗攻击算法如何适应基于事件的视觉数据的离散和稀疏性,以及尖刺神经网络的连续时间设置。我们在N-Mnist和IBM手势上测试我们的方法神经胸视觉数据集,并显示对逆势扰动来实现高成功率,通过注入相对少量的适当放置的事件。我们还首次验证这些扰动的有效性直接对神经族硬件。最后,我们讨论了所产生的扰动和可能的未来方向的性质。
translated by 谷歌翻译
This paper presents a novel federated reinforcement learning (Fed-RL) methodology to enhance the cyber resiliency of networked microgrids. We formulate a resilient reinforcement learning (RL) training setup which (a) generates episodic trajectories injecting adversarial actions at primary control reference signals of the grid forming (GFM) inverters and (b) trains the RL agents (or controllers) to alleviate the impact of the injected adversaries. To circumvent data-sharing issues and concerns for proprietary privacy in multi-party-owned networked grids, we bring in the aspects of federated machine learning and propose a novel Fed-RL algorithm to train the RL agents. To this end, the conventional horizontal Fed-RL approaches using decoupled independent environments fail to capture the coupled dynamics in a networked microgrid, which leads us to propose a multi-agent vertically federated variation of actor-critic algorithms, namely federated soft actor-critic (FedSAC) algorithm. We created a customized simulation setup encapsulating microgrid dynamics in the GridLAB-D/HELICS co-simulation platform compatible with the OpenAI Gym interface for training RL agents. Finally, the proposed methodology is validated with numerical examples of modified IEEE 123-bus benchmark test systems consisting of three coupled microgrids.
translated by 谷歌翻译