In this work, we propose a semantic flow-guided two-stage framework for shape-aware face swapping, namely FlowFace. Unlike most previous methods that focus on transferring the source inner facial features but neglect facial contours, our FlowFace can transfer both of them to a target face, thus leading to more realistic face swapping. Concretely, our FlowFace consists of a face reshaping network and a face swapping network. The face reshaping network addresses the shape outline differences between the source and target faces. It first estimates a semantic flow (i.e., face shape differences) between the source and the target face, and then explicitly warps the target face shape with the estimated semantic flow. After reshaping, the face swapping network generates inner facial features that exhibit the identity of the source face. We employ a pre-trained face masked autoencoder (MAE) to extract facial features from both the source face and the target face. In contrast to previous methods that use identity embedding to preserve identity information, the features extracted by our encoder can better capture facial appearances and identity information. Then, we develop a cross-attention fusion module to adaptively fuse inner facial features from the source face with the target facial attributes, thus leading to better identity preservation. Extensive quantitative and qualitative experiments on in-the-wild faces demonstrate that our FlowFace outperforms the state-of-the-art significantly.
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Open Information Extraction (OpenIE) facilitates the open-domain discovery of textual facts. However, the prevailing solutions evaluate OpenIE models on in-domain test sets aside from the training corpus, which certainly violates the initial task principle of domain-independence. In this paper, we propose to advance OpenIE towards a more realistic scenario: generalizing over unseen target domains with different data distributions from the source training domains, termed Generalized OpenIE. For this purpose, we first introduce GLOBE, a large-scale human-annotated multi-domain OpenIE benchmark, to examine the robustness of recent OpenIE models to domain shifts, and the relative performance degradation of up to 70% implies the challenges of generalized OpenIE. Then, we propose DragonIE, which explores a minimalist graph expression of textual fact: directed acyclic graph, to improve the OpenIE generalization. Extensive experiments demonstrate that DragonIE beats the previous methods in both in-domain and out-of-domain settings by as much as 6.0% in F1 score absolutely, but there is still ample room for improvement.
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由于文件传达了丰富的人类知识,并且通常存在于企业中,因此建筑文档的对话系统已经越来越兴趣。其中,如何理解和从文档中检索信息是一个具有挑战性的研究问题。先前的工作忽略了文档的视觉属性,并将其视为纯文本,从而导致不完整的方式。在本文中,我们提出了一个布局感知文档级信息提取数据集,以促进从视觉上丰富文档(VRD)中提取结构和语义知识的研究,以在对话系统中产生准确的响应。 Lie包含来自4,061页的产品和官方文件的三个提取任务的62K注释,成为我们最大的知识,成为最大的基于VRD的信息提取数据集。我们还开发了扩展基于令牌的语言模型的基准方法,以考虑像人类这样的布局功能。经验结果表明,布局对于基于VRD的提取至关重要,系统演示还验证了提取的知识可以帮助找到用户关心的答案。
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Graph Neural Networks (GNNs) have been widely applied in the semi-supervised node classification task, where a key point lies in how to sufficiently leverage the limited but valuable label information. Most of the classical GNNs solely use the known labels for computing the classification loss at the output. In recent years, several methods have been designed to additionally utilize the labels at the input. One part of the methods augment the node features via concatenating or adding them with the one-hot encodings of labels, while other methods optimize the graph structure by assuming neighboring nodes tend to have the same label. To bring into full play the rich information of labels, in this paper, we present a label-enhanced learning framework for GNNs, which first models each label as a virtual center for intra-class nodes and then jointly learns the representations of both nodes and labels. Our approach could not only smooth the representations of nodes belonging to the same class, but also explicitly encode the label semantics into the learning process of GNNs. Moreover, a training node selection technique is provided to eliminate the potential label leakage issue and guarantee the model generalization ability. Finally, an adaptive self-training strategy is proposed to iteratively enlarge the training set with more reliable pseudo labels and distinguish the importance of each pseudo-labeled node during the model training process. Experimental results on both real-world and synthetic datasets demonstrate our approach can not only consistently outperform the state-of-the-arts, but also effectively smooth the representations of intra-class nodes.
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开放信息提取(OpenIE)促进了独立于域的大型语料库的关系事实的发现。该技术很好地适合许多开放世界的自然语言理解场景,例如自动知识基础构建,开放域问答和明确的推理。由于深度学习技术的快速发展,已经提出了许多神经开放式体系结构并取得了可观的性能。在这项调查中,我们提供了有关状态神经开放模型的广泛概述,其关键设计决策,优势和劣势。然后,我们讨论当前解决方案的局限性以及OpenIE问题本身的开放问题。最后,我们列出了最近的趋势,这些趋势可以帮助扩大其范围和适用性,从而为Openie的未来研究设定了有希望的方向。据我们所知,本文是有关此特定主题的第一篇评论。
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给定一系列集合,其中每个集合与时间戳关联并包含任意数量的元素,时间集的任务预测旨在预测后续集合中的元素。先前对时间集预测的研究主要通过从自己的序列中学习来捕获每个用户的进化偏好。尽管有见地,但我们认为:1)不同用户序列中潜在的协作信号是必不可少的,但尚未被利用; 2)用户还倾向于显示固定的偏好,而现有方法未能考虑。为此,我们提出了一个集成的学习框架,以对时间集预测的用户的进化和固定偏好进行建模,该预测首先通过按时间顺序排列所有用户群的交互来构建通用序列,然后在每个用户集中学习相互作用。特别是,对于每个用户集的交互,我们首先设计一个进化用户偏好建模组件,以跟踪用户的时间不断发展的偏好,并在不同用户之间利用潜在的协作信号。该组件维护一个存储库来存储相关用户和元素的记忆,并根据当前编码的消息和过去的记忆不断更新其记忆。然后,我们设计了一个固定的用户偏好模型模块,以根据历史序列来发现每个用户的个性化特征,该模块从双重角度自适应地汇总了以前相互作用的元素,并在用户和元素的嵌入方式的指导下。最后,我们开发了一种设定批次算法来提高模型效率,该算法可以提前创建时间一致的批次,并平均实现3.5倍的训练速度。现实世界数据集的实验证明了我们方法的有效性和良好的解释性。
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通常观察到的最先进的自然语言技术问题,例如亚马逊alexa和苹果公司,是他们的服务不会因语言障碍而扩展到大多数发展中国家的公民。这种种群因其语言缺乏可用资源来构建NLP产品。本文介绍了allwoz,一个多语言多域面向任务的客户服务对话框数据集覆盖八种语言:英语,普通话,韩语,越南语,印地语,法国,葡萄牙语和泰国。此外,我们通过使用mt5与元学习来创建多语言数据集的基准。
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会话推荐系统(CRS)通过推断用户首选项从对话历史推断用户偏好,提供准确的建议,并生成适当的响应。以前的CRSS使用基于知识图(kg)的推荐模块,并将kg与语言模型集成为响应生成。虽然基于KG的方法证明有效,但仍有两个问题仍有待解决。首先,基于KG的方法忽略会话环境中的信息,但仅依赖于实体关系和单词包来推荐项目。其次,它需要实质性的工程努力来维持模型特定的关系的KG,从而导致灵活性更少。在本文中,我们提出了一种简单而有效的架构,包括预先接受了训练的语言模型(PLM)和项目元数据编码器。编码器学会将项目元数据映射到嵌入式,该嵌入式可以反映对话框上下文中的语义信息。然后,PLM将语义对齐的项目嵌入式与对话上下文一起消耗,以生成高质量的建议和响应。我们的模型通过直接将每个项目转换为嵌入来降低工程复杂性而不是建模实体关系。基准数据集重拨的实验结果表明,我们的模型在两种推荐和响应生成任务上获得最先进的结果。
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在学习动作识别中,模型通常预先接受对象识别,例如图像,例如想象成,稍后在与视频的目标动作识别上微调。这种方法造成了良好的经验性能,特别是最近的基于变压器的视频架构。虽然最近许多作品旨在为行动识别设计更先进的变压器架构,但如何训练视频变压器的努力。在这项工作中,我们探索了几种培训范式并提出了两个结果。首先,视频变压器受益于各种视频数据集和标签空间的联合培训(例如,动力学是关注的,而某些东西是以运动为中心的)。其次,通过进一步与图像共同训练(作为单帧视频),视频变换器学习更好的视频表示。我们将这种方法作为用于行动识别的共同培训视频和图像(封面)。特别是,当基于时序形式的架构上的ImageNet-21k上掠夺时,盖子将动力学-400的前1个精度提高2.4%,动力学-600以2.3%,有些东西-V2达2.3%。当以前最先进的较大刻度图像数据集预先磨削时,覆盖覆盖在动力学-400(87.2%),动力学-600(87.9%),动力学-700(79.8%),有些内容达到最佳结果(70.9%),和时刻 - 时间(46.1%),具有简单的时空视频变压器。
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最近的2D-3D人类姿势估计工作倾向于利用人体骨架的拓扑形成的图形结构。但是,我们认为这种骨架拓扑太稀疏,无法反映身体结构并遭受严重的2D-3D模糊问题。为了克服这些弱点,我们提出了一种新颖的图表卷积网络架构,层次图形网络(HGN)。它基于我们的多尺度图结构建筑策略产生的密度图形拓扑,从而提供更精细的几何信息。所提出的架构包含三个并行组织的稀疏微小表示子网,其中通过新颖的特征融合策略处理多尺度图形结构特征,并通过新颖的特征融合策略进行交换信息,导致丰富的分层表示。我们还介绍了3D粗网格约束,以进一步提高与细节相关的特征学习。广泛的实验表明,我们的HGN通过减少的网络参数实现了最先进的性能
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