The introductory programming sequence has been the focus of much research in computing education. The recent advent of several viable and freely-available AI-driven code generation tools present several immediate opportunities and challenges in this domain. In this position paper we argue that the community needs to act quickly in deciding what possible opportunities can and should be leveraged and how, while also working on how to overcome or otherwise mitigate the possible challenges. Assuming that the effectiveness and proliferation of these tools will continue to progress rapidly, without quick, deliberate, and concerted efforts, educators will lose advantage in helping shape what opportunities come to be, and what challenges will endure. With this paper we aim to seed this discussion within the computing education community.
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Fruit harvesting has recently experienced a shift towards soft grippers that possess compliance, adaptability, and delicacy. In this context, pneumatic grippers are popular, due to provision of high deformability and compliance, however they typically possess limited grip strength. Jamming possesses strong grip capability, however has limited deformability and often requires the object to be pushed onto a surface to attain a grip. This paper describes a hybrid gripper combining pneumatics (for deformation) and jamming (for grip strength). Our gripper utilises a torus (donut) structure with two chambers controlled by pneumatic and vacuum pressure respectively, to conform around a target object. The gripper displays good adaptability, exploiting pneumatics to mould to the shape of the target object where jamming can be successfully harnessed to grip. The main contribution of the paper is design, fabrication, and characterisation of the first hybrid gripper that can use granular jamming in free space, achieving significantly larger retention forces compared to pure pneumatics. We test our gripper on a range of different sizes and shapes, as well as picking a broad range of real fruit.
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In this paper a global reactive motion planning framework for robotic manipulators in complex dynamic environments is presented. In particular, the circular field predictions (CFP) planner from Becker et al. (2021) is extended to ensure obstacle avoidance of the whole structure of a robotic manipulator. Towards this end, a motion planning framework is developed that leverages global information about promising avoidance directions from arbitrary configuration space motion planners, resulting in improved global trajectories while reactively avoiding dynamic obstacles and decreasing the required computational power. The resulting motion planning framework is tested in multiple simulations with complex and dynamic obstacles and demonstrates great potential compared to existing motion planning approaches.
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ICECUBE是一种用于检测1 GEV和1 PEV之间大气和天体中微子的光学传感器的立方公斤阵列，该阵列已部署1.45 km至2.45 km的南极的冰盖表面以下1.45 km至2.45 km。来自ICE探测器的事件的分类和重建在ICeCube数据分析中起着核心作用。重建和分类事件是一个挑战，这是由于探测器的几何形状，不均匀的散射和冰中光的吸收，并且低于100 GEV的光，每个事件产生的信号光子数量相对较少。为了应对这一挑战，可以将ICECUBE事件表示为点云图形，并将图形神经网络（GNN）作为分类和重建方法。 GNN能够将中微子事件与宇宙射线背景区分开，对不同的中微子事件类型进行分类，并重建沉积的能量，方向和相互作用顶点。基于仿真，我们提供了1-100 GEV能量范围的比较与当前ICECUBE分析中使用的当前最新最大似然技术，包括已知系统不确定性的影响。对于中微子事件分类，与当前的IceCube方法相比，GNN以固定的假阳性速率（FPR）提高了信号效率的18％。另外，GNN在固定信号效率下将FPR的降低超过8（低于半百分比）。对于能源，方向和相互作用顶点的重建，与当前最大似然技术相比，分辨率平均提高了13％-20％。当在GPU上运行时，GNN能够以几乎是2.7 kHz的中位数ICECUBE触发速率的速率处理ICECUBE事件，这打开了在在线搜索瞬态事件中使用低能量中微子的可能性。
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自我监督的学习（SSL）方法正在实现越来越多的深度学习模型，可以在难以获得标签的域中的图像数据集上进行培训。但是，这些方法难以扩展到医学成像数据集的高分辨率，在这些数据集中，它们对于在标签 - 筛选医学图像数据集上良好的概括至关重要。在这项工作中，我们提出了组织病理学数据集体（HDGAN）框架，该框架是图像生成和分割的数据集团半监督框架的扩展，可很好地扩展到大分辨率的组织病理学图像。我们从原始框架中进行了几个改编，包括更新生成骨干，从发电机中选择性提取潜在功能以及切换到内存映射数组。这些变化减少了框架的记忆消耗，改善了其对医学成像域的适用性。我们在血栓形成微型病变高分辨率瓷砖数据集上评估HDGAN，这表明高分辨率的图像通量生成任务的性能很强。我们希望这项工作能够在医学成像域中更多地探索对医学成像域中的自我监管框架的更多探索，从而使更多深度学习模型在医学数据集中进行更多应用。
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求职面试通常是高风险的社交场所，需要专业和行为技巧才能令人满意。专业的工作面试培训师会根据公共标准提供有关显示行为的教育反馈。对于提高工作面试所需的行为技能，这种反馈可能会有所帮助。产生此类反馈的技术方法可能是工作面试培训的嬉戏且低调的起点。因此，我们通过基于生成的对抗网络（GAN）的方法扩展了交互式虚拟工作面试培训系统，该方法首先检测到行为弱点并随后产生个性化的反馈。为了评估生成的反馈的有用性，我们使用求职培训系统的模型进行了一项混合方法试点研究。总体研究结果表明，基于GAN的产生的行为反馈很有帮助。此外，参与者评估反馈将改善他们的工作面试绩效。
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从自然语言嵌入中汲取灵感，我们提出了Astromer，这是一种基于变压器的模型，以创建光曲线的表示。Astromer接受了数以百万计的Macho R波段样品的培训，并且很容易对其进行微调以匹配与下游任务相关的特定域。例如，本文显示了使用预训练的表示形式对变量恒星进行分类的好处。此外，我们还提供了一个Python库，其中包括这项工作中使用的所有功能。我们的图书馆包括预先培训的模型，可用于增强深度学习模型的性能，减少计算资源，同时获得最新的结果。
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粒状干扰在软机器人中的应用是最近和有希望的新技术，为创建更高的性能机器人设备提供令人兴奋的可能性。通过在含有颗粒物质内的膜内的真空压力施加真空压力来实现粒状干扰，并且从设计角度来看特别是有趣的，因为可以利用设计参数的多种设计参数来诱导各种有用的行为。迄今为止，已经研究了变量（如晶粒形状和尺寸）以及膜材料的效果作为诱导定制抓握性能的手段，但是由于其特定地，尚未研究其他主要贡献因素，膜形态膜形态学两种准确建模和制造的复杂性。该研究介绍了优化颗粒干扰夹具的膜形态，组合多材料3D打印和进化算法来搜索Materio中的各种形态设计空间的研究。在单个运行中打印整个几代，并测试夹持器保持力并用作健身测量。我们的方法是相对可扩展的，规避需要建模，并保证所考虑的夹具的真实表现。结果表明，膜形态是夹具性能的关键决定因素。可以看到常见的高性能设计以优化粒状夹持器产生抓地力的所有三种主要识别机制，与标准夹持形态有显着不同，并概括跨越一系列测试对象。
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Variational inference uses optimization, rather than integration, to approximate the marginal likelihood, and thereby the posterior, in a Bayesian model. Thanks to advances in computational scalability made in the last decade, variational inference is now the preferred choice for many high-dimensional models and large datasets. This tutorial introduces variational inference from the parametric perspective that dominates these recent developments, in contrast to the mean-field perspective commonly found in other introductory texts.
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Knowledge graphs (KG) have served as the key component of various natural language processing applications. Commonsense knowledge graphs (CKG) are a special type of KG, where entities and relations are composed of free-form text. However, previous works in KG completion and CKG completion suffer from long-tail relations and newly-added relations which do not have many know triples for training. In light of this, few-shot KG completion (FKGC), which requires the strengths of graph representation learning and few-shot learning, has been proposed to challenge the problem of limited annotated data. In this paper, we comprehensively survey previous attempts on such tasks in the form of a series of methods and applications. Specifically, we first introduce FKGC challenges, commonly used KGs, and CKGs. Then we systematically categorize and summarize existing works in terms of the type of KGs and the methods. Finally, we present applications of FKGC models on prediction tasks in different areas and share our thoughts on future research directions of FKGC.
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