Beyond neuromorphic: Exploiting the extended frequency response of memristive devices and systems to process information in new ways.

我们建议在计算硬件领域建立一个全新的方向。我们将开发最初从大脑处理信息的方式(所谓的神经形态计算)中获得灵感的设备和电路，但将超越这一点，开发一种激进的新方法，利用被称为忆阻器的神经形态设备的频率响应动力学，以新颖而强大的方式处理信息。这种装置目前被用作可变电阻，其电阻取决于它们过去的历史。在这项工作中，我们将利用它们丰富的动力学特性，利用它们复杂的频率响应在频域中处理信号，并在简单电路中修改其他耦合器件的行为。这项工作有望为忆阻器的研究开辟一个新的方向，并解决现代计算系统的一个紧迫问题：它们日益不可持续的能量需求。鉴于一个最先进的机器学习系统在训练过程中产生的二氧化碳相当于五辆汽车在其一生中排放的二氧化碳，而全球数据中心目前每年消耗约250TWh，因此迫切需要新的低功耗计算方法。神经形态系统从生物学中获得灵感，以缩小大脑和数字计算系统之间六个数量级的功耗差距。在这项工作中，我们将更进一步，增加生物学中找不到的功能：使用系统复杂频率响应的修改进行处理。该项目将建立一个新设备的关键工具箱，以支持下一代神经形态和“神经形态+”计算系统。

We propose to establish a wholly new direction in computing hardware. We will develop devices and circuits that initially take inspiration from the way the brain processes information (so-called neuromorphic computing), but will go beyond this to develop a radical new approach that uses the dynamics of the frequency response of neuromorphic devices known as memristors to process information in novel and powerful ways. Such devices are currently used as variable electrical resistors whose resistance depends on their past history. In this work we will exploit their rich dynamics by using their complex frequency response to process signals in the frequency domain and to modify the behaviour of other coupled devices in simple circuits.This work promises to open up a new direction for memristor research and address a pressing issue for modern computing systems: their increasingly unsustainable energy demands. Given that a single state-of-the-art machine learning system can generate as much CO2 during training as five cars emit over their lifetime, and that global data centres currently consume around 250TWh per year, new low-power computing approaches are needed urgently. Neuromorphic systems take inspiration from biology to close the six order of magnitude power consumption gap between the brain and digital computing systems. In this work we will go further and add capabilities not found in biology: processing using modification of the complex frequency response of systems. This project will establish a key toolbox of novel devices to underpin next generation neuromorphic and "neuromorphic plus" computing systems.