Artificial Intelligence (AI) and its applications have sparked extraordinary interest in recent years. This achievement can be ascribed in part to advances in AI subfields including Machine Learning (ML), Computer Vision (CV), and Natural Language Processing (NLP). Deep learning, a sub-field of machine learning that employs artificial neural network concepts, has enabled the most rapid growth in these domains. The integration of vision and language has sparked a lot of attention as a result of this. The tasks have been created in such a way that they properly exemplify the concepts of deep learning. In this review paper, we provide a thorough and an extensive review of the state of the arts approaches, key models design principles and discuss existing datasets, methods, their problem formulation and evaluation measures for VQA and Visual reasoning tasks to understand vision and language representation learning. We also present some potential future paths in this field of research, with the hope that our study may generate new ideas and novel approaches to handle existing difficulties and develop new applications.
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One of the key challenges in deploying RL to real-world applications is to adapt to variations of unknown environment contexts, such as changing terrains in robotic tasks and fluctuated bandwidth in congestion control. Existing works on adaptation to unknown environment contexts either assume the contexts are the same for the whole episode or assume the context variables are Markovian. However, in many real-world applications, the environment context usually stays stable for a stochastic period and then changes in an abrupt and unpredictable manner within an episode, resulting in a segment structure, which existing works fail to address. To leverage the segment structure of piecewise stable context in real-world applications, in this paper, we propose a \textit{\textbf{Se}gmented \textbf{C}ontext \textbf{B}elief \textbf{A}ugmented \textbf{D}eep~(SeCBAD)} RL method. Our method can jointly infer the belief distribution over latent context with the posterior over segment length and perform more accurate belief context inference with observed data within the current context segment. The inferred belief context can be leveraged to augment the state, leading to a policy that can adapt to abrupt variations in context. We demonstrate empirically that SeCBAD can infer context segment length accurately and outperform existing methods on a toy grid world environment and Mujuco tasks with piecewise-stable context.
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Ramp merging is a typical application of cooperative intelligent transportation system (C-ITS). Vehicle trajectories perceived by roadside sensors are importation complement to the limited visual field of on-board perception. Vehicle tracking and trajectory denoising algorithm is proposed in this paper to take full advantage of roadside cameras for vehicle trajectory and speed profile estimation. Dynamic speed guidance algorithm is proposed to help on-ramp vehicles to merge into mainline smoothly, even in non-cooperative environment where mainline vehicles are not expected to slow down to accommodate on-ramp vehicles. On-site experiments were taken out in a merging area of Hangzhou Belt Highway to testify our prototype system, and simulation analysis shows our proposed algorithm can achieve significant fuel savings during the ramp merging process.
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Pre-trained language models (PLMs) are known to improve the generalization performance of natural language understanding models by leveraging large amounts of data during the pre-training phase. However, the out-of-distribution (OOD) generalization problem remains a challenge in many NLP tasks, limiting the real-world deployment of these methods. This paper presents the first attempt at creating a unified benchmark named GLUE-X for evaluating OOD robustness in NLP models, highlighting the importance of OOD robustness and providing insights on how to measure the robustness of a model and how to improve it. The benchmark includes 13 publicly available datasets for OOD testing, and evaluations are conducted on 8 classic NLP tasks over 19 popularly used PLMs. Our findings confirm the need for improved OOD accuracy in NLP tasks, as significant performance degradation was observed in all settings compared to in-distribution (ID) accuracy.
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This paper presents BigCilin, the first Chinese open-domain knowledge graph with fine-grained hypernym-hyponym re-lations which are extracted automatically from multiple sources for Chinese named entities. With the fine-grained hypernym-hyponym relations, BigCilin owns flexible semantic hierarchical structure. Since the hypernym-hyponym paths are automati-cally generated and one entity may have several senses, we provide a path disambi-guation solution to map a hypernym-hyponym path of one entity to its one sense on the condition that the path and the sense express the same meaning. In order to conveniently access our BigCilin Knowle-dge graph, we provide web interface in two ways. One is that it supports querying any Chinese named entity and browsing the extracted hypernym-hyponym paths surro-unding the query entity. The other is that it gives a top-down browsing view to illust-rate the overall hierarchical structure of our BigCilin knowledge graph over some sam-pled entities.
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用于提取和抽象性摘要系统的传统培训范例始终仅使用令牌级别或句子级培训目标。但是,始终从摘要级别评估输出摘要,从而导致培训和评估的不一致。在本文中,我们提出了一个基于对比度学习的重新排列框架,用于一阶段的摘要,称为COLO。通过建模对比目标,我们表明摘要模型能够根据摘要级别的分数直接生成摘要,而无需其他模块和参数。广泛的实验表明,CORO在CNN/DailyMail基准测试中提高了单阶段系统的提取和抽象结果,将其提高到44.58和46.33 Rouge-1得分,同时保留了参数效率和推断效率。与最先进的多阶段系统相比,我们节省了100多个GPU训练时间,并在推理期间获得3〜8加速比,同时保持可比的结果。
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关于多模式情绪识别的最新作品转向端到端模型,该模型可以提取与两阶段管道相比,目标任务监督的特定任务特征。但是,以前的方法仅模拟文本和声学和视觉方式之间的特征相互作用,而忽略了捕获声学和视觉方式之间的特征相互作用。在本文中,我们提出了多模式的端到端变压器(ME2ET),该变压器可以有效地对低级和高级水平的文本,声学和视觉方式之间的三模式特征进行建模。在低水平,我们提出了进行性三模式的注意,可以通过采用两次通行策略来对三模式特征相互作用进行建模,并可以进一步利用这种相互作用,以通过降低输入令牌来显着降低计算和记忆复杂性长度。在高水平上,我们引入了三模式特征融合层,以明确汇总三种模式的语义表示。 CMU-MOSEI和IEMOCAP数据集的实验结果表明,ME2ET实现了最新性能。进一步的深入分析证明了拟议的渐进三模式关注的有效性,效率和解释性,这可以帮助我们的模型实现更好的性能,同时显着降低计算和记忆成本。我们的代码将公开可用。
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本文介绍了Kings Arena的荣誉,Kings Arena是基于国王荣誉的强化学习(RL)环境,这是世界上最受欢迎的游戏之一。与以前大多数工作中研究的其他环境相比,我们的人对竞争性强化学习提出了新的概括挑战。与对手竞争的一个代理商是一个多代理的问题;它需要概括能力,因为它具有控制和不同的对手竞争的不同目标。我们描述了国王域名荣誉的观察,动作和奖励规范,并提供了一个基于python的开源界面,以与游戏引擎进行通信。我们为纪念国王竞技场的二十个目标英雄提供了各种任务,并为具有可行的计算资源的基于RL的方法提供了初始基线结果。最后,我们展示了国王竞技场的荣誉和对挑战的可能补救措施所面临的概括挑战。所有软件(包括环境级)均可在https://github.com/tencent-ailab/hok_env上公开获得。该文档可在https://aiarena.tencent.com/hok/doc/上获得。
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在由车辆安装的仪表板摄像机捕获的视频中检测危险交通代理(仪表板)对于促进在复杂环境中的安全导航至关重要。与事故相关的视频只是驾驶视频大数据的一小部分,并且瞬态前的事故流程具有高度动态和复杂性。此外,风险和非危险交通代理的外观可能相似。这些使驾驶视频中的风险对象本地化特别具有挑战性。为此,本文提出了一个注意力引导的多式功能融合网络(AM-NET),以将仪表板视频的危险交通代理本地化。两个封闭式复发单元(GRU)网络使用对象边界框和从连续视频帧中提取的光流功能来捕获时空提示,以区分危险交通代理。加上GRUS的注意力模块学会了与事故相关的交通代理。融合了两个功能流,AM-NET预测了视频中交通代理的风险评分。在支持这项研究的过程中,本文还引入了一个名为“风险对象本地化”(ROL)的基准数据集。该数据集包含带有事故,对象和场景级属性的空间,时间和分类注释。拟议的AM-NET在ROL数据集上实现了85.73%的AUC的有希望的性能。同时,AM-NET在DOTA数据集上优于视频异常检测的当前最新视频异常检测。一项彻底的消融研究进一步揭示了AM-NET通过评估其不同组成部分的贡献的优点。
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近年来,随着新颖的策略和应用,神经网络一直在迅速扩展。然而,尽管不可避免地会针对关键应用程序来解决这些挑战,例如神经网络技术诸如神经网络技术中仍未解决诸如神经网络技术的挑战。已经尝试通过用符号表示来表示和嵌入域知识来克服神经网络计算中的挑战。因此,出现了神经符号学习(Nesyl)概念,其中结合了符号表示的各个方面,并将常识带入神经网络(Nesyl)。在可解释性,推理和解释性至关重要的领域中,例如视频和图像字幕,提问和推理,健康信息学和基因组学,Nesyl表现出了有希望的结果。这篇综述介绍了一项有关最先进的Nesyl方法的全面调查,其原理,机器和深度学习算法的进步,诸如Opthalmology之类的应用以及最重要的是该新兴领域的未来观点。
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