会话问题 - 转移生成是一项任务,它会自动生成一个基于输入段落的大规模对话问题回答数据集。在本文中,我们介绍了一个新颖的框架,该框架从一段段落中提取了值得问候的短语,然后在考虑以前的对话时产生相应的问题。特别是,我们的框架在生成问题后修改了提取的答案,以便答案与配对的问题完全匹配。实验结果表明,我们简单的答案修订方法可显着改善合成数据的质量。此外,我们证明我们的框架可以有效地用于域的适应会话问答。
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几乎没有弹药对话状态跟踪(DST)模型,即使使用少量数据,也具有可靠准确性的用户请求。在本文中,我们介绍了一个无本体的几杆DST,并具有自我喂养的信念状态输入。自我喂养的信念状态输入通过总结以前的对话来提高多转向对话的准确性。另外,我们新制定了一个插槽辅助任务。这项新的辅助任务有助于分类对话中是否提到了一个插槽。我们的模型在Multiwoz 2.0上的四个域中获得了几次射门设置的最佳分数。
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数据到文本(D2T)生成是从结构化输入生成文本的任务。我们观察到,当重复两次相同的目标句子时,基于变压器(T5)模型会产生由结构化输入的非对称句子组成的输出。换句话说,这些句子的长度和质量不同。我们称这种现象为“不对称产生”,并在D2T生成中利用了这一现象。生成不对称句子后,我们将使用无重复的目标添加输出的第一部分。随着渐进式编辑(PROEDIT)进行,召回增加。因此,此方法比在编辑之前更好地涵盖了结构化输入。证明是提高D2T生成性能的一种简单但有效的方法,它在Totto数据集中实现了新的状态结果
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我们研究了数据驱动的深度学习方法的潜力,即从观察它们的混合物中分离两个通信信号。特别是,我们假设一个信号之一的生成过程(称为感兴趣的信号(SOI)),并且对第二个信号的生成过程不了解,称为干扰。单通道源分离问题的这种形式也称为干扰拒绝。我们表明,捕获高分辨率的时间结构(非平稳性),可以准确地同步与SOI和干扰,从而带来了可观的性能增长。有了这个关键的见解,我们提出了一种域信息神经网络(NN)设计,该设计能够改善“现成” NNS和经典检测和干扰拒绝方法,如我们的模拟中所示。我们的发现突出了特定于交流领域知识的关键作用在开发数据驱动的方法方面发挥了作用,这些方法具有前所未有的收益的希望。
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在前景点(即物体)和室外激光雷达点云中的背景点之间通常存在巨大的失衡。它阻碍了尖端的探测器专注于提供信息的区域,以产生准确的3D对象检测结果。本文提出了一个新的对象检测网络,该对象检测网络通过称为PV-RCNN ++的语义点 - 素voxel特征相互作用。与大多数现有方法不同,PV-RCNN ++探索了语义信息,以增强对象检测的质量。首先,提出了一个语义分割模块,以保留更具歧视性的前景关键。这样的模块将指导我们的PV-RCNN ++在关键区域集成了更多与对象相关的点和体素特征。然后,为了使点和体素有效相互作用,我们利用基于曼哈顿距离的体素查询来快速采样关键点周围的体素特征。与球查询相比,这种体素查询将降低从O(N)到O(K)的时间复杂性。此外,为了避免仅学习本地特征,基于注意力的残留点网模块旨在扩展接收场,以将相邻的素素特征适应到关键点中。 Kitti数据集的广泛实验表明,PV-RCNN ++达到81.60 $ \%$,40.18 $ \%$,68.21 $ \%$ \%$ 3D地图在汽车,行人和骑自行车的人方面,可以在州,甚至可以在州立骑行者,甚至更好地绩效-艺术。
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我们研究了单通道源分离(SCSS)的问题,并专注于环化信号,这些信号特别适用于各种应用领域。与经典的SCSS方法不同,我们考虑了一个仅可用源的示例而不是模型的设置,从而激发了数据驱动的方法。对于具有基本环化高斯成分的源模型,我们为任何基于模型或数据驱动的分离方法建立了可达到的均方误差(MSE)的下限。我们的分析进一步揭示了最佳分离和相关实施挑战的操作。作为一种计算吸引力的替代方案,我们建议使用U-NET体系结构进行深度学习方法,该方法与最低MSE估计器具有竞争力。我们在模拟中证明,有了合适的域信息架构选择,我们的U-NET方法可以通过大幅减少的计算负担来达到最佳性能。
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雨是最常见的天气之一,可以完全降低图像质量并干扰许多计算机视觉任务的执行,尤其是在大雨条件下。我们观察到:(i)雨是雨水和雨淋的混合物; (ii)场景的深度决定了雨条的强度以及变成多雨的阴霾的强度; (iii)大多数现有的DERANE方法仅在合成雨图像上进行训练,因此对现实世界的场景概括不佳。在这些观察结果的激励下,我们提出了一种新的半监督,清除降雨生成的对抗网络(半密集),该混合物由四个关键模块组成:(i)新的注意力深度预测网络以提供精确的深度估计; (ii)上下文特征预测网络由几个精心设计的详细残留块组成,以产生详细的图像上下文特征; (iii)金字塔深度引导的非本地网络,以有效地将图像上下文与深度信息整合在一起,并产生最终的无雨图像; (iv)全面的半监督损失函数,使该模型不限于合成数据集,而是平稳地将其概括为现实世界中的大雨场景。广泛的实验表明,在合成和现实世界中,我们的二十多种代表性的最先进的方法对我们的方法进行了明显的改进。
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The visual dimension of cities has been a fundamental subject in urban studies, since the pioneering work of scholars such as Sitte, Lynch, Arnheim, and Jacobs. Several decades later, big data and artificial intelligence (AI) are revolutionizing how people move, sense, and interact with cities. This paper reviews the literature on the appearance and function of cities to illustrate how visual information has been used to understand them. A conceptual framework, Urban Visual Intelligence, is introduced to systematically elaborate on how new image data sources and AI techniques are reshaping the way researchers perceive and measure cities, enabling the study of the physical environment and its interactions with socioeconomic environments at various scales. The paper argues that these new approaches enable researchers to revisit the classic urban theories and themes, and potentially help cities create environments that are more in line with human behaviors and aspirations in the digital age.
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While inferring common actor states (such as position or velocity) is an important and well-explored task of the perception system aboard a self-driving vehicle (SDV), it may not always provide sufficient information to the SDV. This is especially true in the case of active emergency vehicles (EVs), where light-based signals also need to be captured to provide a full context. We consider this problem and propose a sequential methodology for the detection of active EVs, using an off-the-shelf CNN model operating at a frame level and a downstream smoother that accounts for the temporal aspect of flashing EV lights. We also explore model improvements through data augmentation and training with additional hard samples.
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The Internet of Senses (IoS) holds the promise of flawless telepresence-style communication for all human `receptors' and therefore blurs the difference of virtual and real environments. We commence by highlighting the compelling use cases empowered by the IoS and also the key network requirements. We then elaborate on how the emerging semantic communications and Artificial Intelligence (AI)/Machine Learning (ML) paradigms along with 6G technologies may satisfy the requirements of IoS use cases. On one hand, semantic communications can be applied for extracting meaningful and significant information and hence efficiently exploit the resources and for harnessing a priori information at the receiver to satisfy IoS requirements. On the other hand, AI/ML facilitates frugal network resource management by making use of the enormous amount of data generated in IoS edge nodes and devices, as well as by optimizing the IoS performance via intelligent agents. However, the intelligent agents deployed at the edge are not completely aware of each others' decisions and the environments of each other, hence they operate in a partially rather than fully observable environment. Therefore, we present a case study of Partially Observable Markov Decision Processes (POMDP) for improving the User Equipment (UE) throughput and energy consumption, as they are imperative for IoS use cases, using Reinforcement Learning for astutely activating and deactivating the component carriers in carrier aggregation. Finally, we outline the challenges and open issues of IoS implementations and employing semantic communications, edge intelligence as well as learning under partial observability in the IoS context.
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