对比性自我监督学习方法学会将图像（例如图像）映射到无需标签的情况下将图像映射到非参数表示空间中。尽管非常成功，但当前方法在训练阶段需要大量数据。在目标训练集规模限制的情况下，已知概括是差的。在大型源数据集和目标样本上进行微调进行预处理，容易在几杆方向上过度拟合，在几个弹药方面，只有少量的目标样本可用。在此激励的情况下，我们提出了一种用于自我监督的对比度学习的域适应方法，称为少数最大的学习方法，以解决对目标分布的适应问题，这些问题在几乎没有射击学习下。为了量化表示质量，我们在包括ImageNet，Visda和FastMRI在内的一系列源和目标数据集上评估了很少的最大最大速度，在这些数据集和FastMRI上，很少有最大最大的最大值始终优于其他方法。

Foveated imaging provides a better tradeoff between situational awareness (field of view) and resolution and is critical in long-wavelength infrared regimes because of the size, weight, power, and cost of thermal sensors. We demonstrate computational foveated imaging by exploiting the ability of a meta-optical frontend to discriminate between different polarization states and a computational backend to reconstruct the captured image/video. The frontend is a three-element optic: the first element which we call the "foveal" element is a metalens that focuses s-polarized light at a distance of $f_1$ without affecting the p-polarized light; the second element which we call the "perifoveal" element is another metalens that focuses p-polarized light at a distance of $f_2$ without affecting the s-polarized light. The third element is a freely rotating polarizer that dynamically changes the mixing ratios between the two polarization states. Both the foveal element (focal length = 150mm; diameter = 75mm), and the perifoveal element (focal length = 25mm; diameter = 25mm) were fabricated as polarization-sensitive, all-silicon, meta surfaces resulting in a large-aperture, 1:6 foveal expansion, thermal imaging capability. A computational backend then utilizes a deep image prior to separate the resultant multiplexed image or video into a foveated image consisting of a high-resolution center and a lower-resolution large field of view context. We build a first-of-its-kind prototype system and demonstrate 12 frames per second real-time, thermal, foveated image, and video capture in the wild.

This paper presents a state-of-the-art optimal controller for quadruped locomotion. The robot dynamics is represented using a single rigid body (SRB) model. A linear time-varying model predictive controller (LTV MPC) is proposed by using linearization schemes. Simulation results show that the LTV MPC can execute various gaits, such as trot and crawl, and is capable of tracking desired reference trajectories even under unknown external disturbances. The LTV MPC is implemented as a quadratic program using qpOASES through the CasADi interface at 50 Hz. The proposed MPC can reach up to 1 m/s top speed with an acceleration of 0.5 m/s2 executing a trot gait. The implementation is available at https:// github.com/AndrewZheng-1011/Quad_ConvexMPC

Graph neural networks (GNNs) have recently emerged as a promising learning paradigm in learning graph-structured data and have demonstrated wide success across various domains such as recommendation systems, social networks, and electronic design automation (EDA). Like other deep learning (DL) methods, GNNs are being deployed in sophisticated modern hardware systems, as well as dedicated accelerators. However, despite the popularity of GNNs and the recent efforts of bringing GNNs to hardware, the fault tolerance and resilience of GNNs has generally been overlooked. Inspired by the inherent algorithmic resilience of DL methods, this paper conducts, for the first time, a large-scale and empirical study of GNN resilience, aiming to understand the relationship between hardware faults and GNN accuracy. By developing a customized fault injection tool on top of PyTorch, we perform extensive fault injection experiments to various GNN models and application datasets. We observe that the error resilience of GNN models varies by orders of magnitude with respect to different models and application datasets. Further, we explore a low-cost error mitigation mechanism for GNN to enhance its resilience. This GNN resilience study aims to open up new directions and opportunities for future GNN accelerator design and architectural optimization.

We present pyRDDLGym, a Python framework for auto-generation of OpenAI Gym environments from RDDL declerative description. The discrete time step evolution of variables in RDDL is described by conditional probability functions, which fits naturally into the Gym step scheme. Furthermore, since RDDL is a lifted description, the modification and scaling up of environments to support multiple entities and different configurations becomes trivial rather than a tedious process prone to errors. We hope that pyRDDLGym will serve as a new wind in the reinforcement learning community by enabling easy and rapid development of benchmarks due to the unique expressive power of RDDL. By providing explicit access to the model in the RDDL description, pyRDDLGym can also facilitate research on hybrid approaches for learning from interaction while leveraging model knowledge. We present the design and built-in examples of pyRDDLGym, and the additions made to the RDDL language that were incorporated into the framework.

We discuss a platform that has both software and hardware components, and whose purpose is to support research into characterizing and mitigating the sim-to-real gap in robotics and vehicle autonomy engineering. The software is operating-system independent and has three main components: a simulation engine called Chrono, which supports high-fidelity vehicle and sensor simulation; an autonomy stack for algorithm design and testing; and a development environment that supports visualization and hardware-in-the-loop experimentation. The accompanying hardware platform is a 1/6th scale vehicle augmented with reconfigurable mountings for computing, sensing, and tracking. Since this vehicle platform has a digital twin within the simulation environment, one can test the same autonomy perception, state estimation, or controls algorithms, as well as the processors they run on, in both simulation and reality. A demonstration is provided to show the utilization of this platform for autonomy research. Future work will concentrate on augmenting ART/ATK with support for a full-sized Chevy Bolt EUV, which will be made available to this group in the immediate future.

机器人车使用成本图来规划无碰撞路径。与地图中的每个单元相关的成本表示感知的环境信息，这些信息通常是在经过几次反复试验后手动确定的。在越野环境中，由于存在几种类型的功能，将与每个功能相关的成本值进行手工制作是挑战。此外，不同手工制作的成本值可以导致相同环境的不同路径，而不可取的环境。在本文中，我们解决了从感知的稳健车辆路径计划中学习成本图值的问题。我们使用深度学习方法提出了一个名为“骆驼”的新颖框架，该方法通过演示来学习参数，从而为路径规划提供适应性和强大的成本图。骆驼已接受过多模式数据集的培训，例如Rellis-3D。骆驼的评估是在越野场景模拟器（MAV）和IISER-B校园的现场数据上进行的。我们还在地面流动站上执行了骆驼的现实实施。结果表明，在非结构化的地形上没有碰撞的情况下，车辆的灵活而强大的运动。

与标准动态范围（SDR）视频相比，高动态范围（HDR）视频可以代表更大的亮度和色彩范围，并且正迅速成为行业标准。与传统SDR视频相比，HDR视频具有更具挑战性的捕获，传输和显示要求。凭借其更大的深度，高级的电流传输功能以及更广泛的颜色范围，因此需要专门设计用于预测HDR视频质量的视频质量算法。为此，我们介绍了HDR视频的首次公开发布的大规模主观研究。我们研究扭曲的影响，例如压缩和混叠对HDR视频质量的影响。我们还通过在黑暗实验室环境和更明亮的客厅环境中进行研究来研究环境照明对HDR视频感知质量的影响。总共有66名受试者参加了这项研究，并收集了20,000多个意见分数，这使得这成为有史以来最大的HDR视频质量研究。我们预计，该数据集将成为研究人员为HDR视频开发更好的感知质量模型的宝贵资源。

我们通过策略提取（MSVIPER）提出了多种可验证的增强学习，这是一种策略蒸馏到决策树以改进机器人导航的新方法。 MSVIPER使用任何强化学习（RL）技术来学习一项“专家”政策，涉及学习国家行动映射，然后使用模仿学习来从中学习决策树策略。我们证明，MSVIPER会导致有效的决策树，并可以准确模仿专家政策的行为。此外，我们提出了有效的政策蒸馏和树修改技术，这些技术利用决策树结构，可以改进政策而无需再培训。我们使用我们的方法来改善用于室内和室外场景的基于RL的机器人导航算法的性能。我们证明了在减少冻结和振荡行为（减少95 \％降低）方面的好处。

由于需要确保安全可靠的人工智能（AI），因此在过去几年中，机器伦理学受到了越来越多的关注。这两种在机器伦理中使用的主要理论是道义和功利主义伦理。另一方面，美德伦理经常被称为另一种伦理理论。尽管这种有趣的方法比流行的道德理论具有一定的优势，但由于其形式化，编纂和解决道德困境以训练良性剂的挑战，工程人工贤惠的媒介几乎没有努力。我们建议通过使用充满道德困境的角色扮演游戏来弥合这一差距。有几种这样的游戏，例如论文，生活很奇怪，主要角色遇到的情况必须通过放弃对他们所珍视的其他东西来选择正确的行动方案。我们从此类游戏中汲取灵感，以展示如何设计系统的角色扮演游戏来发展人造代理中的美德。使用现代的AI技术，例如基于亲和力的强化学习和可解释的AI，我们激励了扮演这种角色扮演游戏的良性代理，以及通过美德道德镜头对他们的决策进行检查。这种代理和环境的发展是朝着实际上正式化和证明美德伦理在伦理代理发展的价值的第一步。