Cross-view geo-localization aims to estimate the location of a query ground image by matching it to a reference geo-tagged aerial images database. As an extremely challenging task, its difficulties root in the drastic view changes and different capturing time between two views. Despite these difficulties, recent works achieve outstanding progress on cross-view geo-localization benchmarks. However, existing methods still suffer from poor performance on the cross-area benchmarks, in which the training and testing data are captured from two different regions. We attribute this deficiency to the lack of ability to extract the spatial configuration of visual feature layouts and models' overfitting on low-level details from the training set. In this paper, we propose GeoDTR which explicitly disentangles geometric information from raw features and learns the spatial correlations among visual features from aerial and ground pairs with a novel geometric layout extractor module. This module generates a set of geometric layout descriptors, modulating the raw features and producing high-quality latent representations. In addition, we elaborate on two categories of data augmentations, (i) Layout simulation, which varies the spatial configuration while keeping the low-level details intact. (ii) Semantic augmentation, which alters the low-level details and encourages the model to capture spatial configurations. These augmentations help to improve the performance of the cross-view geo-localization models, especially on the cross-area benchmarks. Moreover, we propose a counterfactual-based learning process to benefit the geometric layout extractor in exploring spatial information. Extensive experiments show that GeoDTR not only achieves state-of-the-art results but also significantly boosts the performance on same-area and cross-area benchmarks.

Though transfer learning is promising to increase the learning efficiency, the existing methods are still subject to the challenges from long-horizon tasks, especially when expert policies are sub-optimal and partially useful. Hence, a novel algorithm named EASpace (Enhanced Action Space) is proposed in this paper to transfer the knowledge of multiple sub-optimal expert policies. EASpace formulates each expert policy into multiple macro actions with different execution time period, then integrates all macro actions into the primitive action space directly. Through this formulation, the proposed EASpace could learn when to execute which expert policy and how long it lasts. An intra-macro-action learning rule is proposed by adjusting the temporal difference target of macro actions to improve the data efficiency and alleviate the non-stationarity issue in multi-agent settings. Furthermore, an additional reward proportional to the execution time of macro actions is introduced to encourage the environment exploration via macro actions, which is significant to learn a long-horizon task. Theoretical analysis is presented to show the convergence of the proposed algorithm. The efficiency of the proposed algorithm is illustrated by a grid-based game and a multi-agent pursuit problem. The proposed algorithm is also implemented to real physical systems to justify its effectiveness.

知识图的归纳链路预测旨在预测未见实体之间的缺失联系，而那些未在训练阶段显示的实体。大多数以前的作品都学习实体的特定实体嵌入，这些实体无法处理看不见的实体。最近的几种方法利用封闭子图来获得归纳能力。但是，所有这些作品仅在没有完整的邻近关系的情况下考虑子图的封闭部分，这导致了忽略部分邻近关系的问题，并且很难处理稀疏的子图。为了解决这个问题，我们提出了SNRI子图邻近关系Infomax，它足够从两个方面利用完整的相邻关系：节点特征的相邻关系特征和稀疏子图的相邻关系路径。为了进一步以全球方式建模邻近关系，我们对知识图进行创新的相互信息（MI）最大化。实验表明，SNRI在归纳链路预测任务上的大幅度优于现有的最新方法，并验证以全局方式探索完整的邻近关系的有效性，以表征节点特征和在稀疏子分类上的理由。

手语是人们表达自己的感受和情感的不同能力的窗口。但是，人们在短时间内学习手语仍然具有挑战性。为了应对这项现实世界中的挑战，在这项工作中，我们研究了运动传输系统，该系统可以将用户照片传输到特定单词的手语视频。特别是，输出视频的外观内容来自提供的用户图像，而视频的运动是从指定的教程视频中提取的。我们观察到采用最先进的运动转移方法来产生语言的两个主要局限性：（1）现有的运动转移工作忽略了人体的先前几何知识。 （2）先前的图像动画方法仅将图像对作为训练阶段的输入，这无法完全利用视频中的时间信息。为了解决上述局限性，我们提出了结构感知的时间一致性网络（STCNET），以共同优化人类的先前结构，并具有符号语言视频生成的时间一致性。本文有两个主要贡献。 （1）我们利用细粒骨骼检测器来提供人体关键点的先验知识。这样，我们确保关键点运动在有效范围内，并使模型变得更加可解释和强大。 （2）我们引入了两个周期矛盾损失，即短期周期损失和长期周期损失，这些损失是为了确保生成的视频的连续性。我们以端到端的方式优化了两个损失和关键点检测器网络。

多元时间序列预测已在各种领域（包括金融，交通，能源和医疗保健）中广泛范围的应用程序。为了捕获复杂的时间模式，大量研究设计了基于RNN，GNN和Transformers的许多变体的复杂神经网络体系结构。但是，复杂的模型在计算上通常是昂贵的，因此当应用于大型现实世界数据集时，在训练和推理效率方面面临严重的挑战。在本文中，我们介绍了Lightts，这是一种基于简单的基于MLP的结构的轻度深度学习体系结构。 LightT的关键思想是在两种微妙的下采样策略之上应用基于MLP的结构，包括间隔抽样和连续采样，灵感来自至关重要的事实，即下采样时间序列通常保留其大多数信息。我们对八个广泛使用的基准数据集进行了广泛的实验。与现有的最新方法相比，Lightts在其中五个方面表现出更好的性能，其余的性能可比性。此外，Lightts高效。与最大的基准数据集上的先前SOTA方法相比，它使用的触发器少于5％。此外，Lightts的预测准确性与以前的SOTA方法相比，在长序列预测任务中，预测准确性的差异要小得多。

地理定位的概念是指确定地球上的某些“实体”的位置的过程，通常使用全球定位系统（GPS）坐标。感兴趣的实体可以是图像，图像序列，视频，卫星图像，甚至图像中可见的物体。由于GPS标记媒体的大规模数据集由于智能手机和互联网而迅速变得可用，而深入学习已经上升以提高机器学习模型的性能能力，因此由于其显着影响而出现了视觉和对象地理定位的领域广泛的应用，如增强现实，机器人，自驾驶车辆，道路维护和3D重建。本文提供了对涉及图像的地理定位的全面调查，其涉及从捕获图像（图像地理定位）或图像内的地理定位对象（对象地理定位）的地理定位的综合调查。我们将提供深入的研究，包括流行算法的摘要，对所提出的数据集的描述以及性能结果的分析来说明每个字段的当前状态。

与卷积层相比，完全连接的（FC）层更好地在捕获本地模式时更好地建模，但是更糟糕的是，因此通常不对图像识别的青睐。在本文中，我们提出了一种方法，局部注射，通过将培训的并行参数合并到FC内核中的训练参数并将训练的参数合并到FC层中。可以将位置喷射为新颖的结构重新参数化方法，因为它等效地通过转换参数来转换结构。基于此，我们提出了一个名为RepMLP块的多层 - Perceptron（MLP）块，它使用三个FC层提取特征，以及名为Repmlpnet的新颖体系结构。分层设计将RepMLPNET与其他同时提出的视觉MLPS区分开来。由于它生成不同级别的特征映射，它有资格作为下游任务的骨干模型，如语义分割。我们的结果表明，1）地区注射是MLP型号的一般方法; 2）与其他MLP相比，REPMLPNET具有良好的准确性效率折衷; 3）REPMLPNET是第一MLP，可无缝转移到CityCAPES语义分割。代码和模型可在https://github.com/dingxiaoh/repmlp上使用。

Vision-language models (VLMs) that are pre-trained on large-scale image-text pairs have demonstrated impressive transferability on a wide range of visual tasks. Transferring knowledge from such powerful pre-trained VLMs is emerging as a promising direction for building effective video recognition models. However, the current exploration is still limited. In our opinion, the greatest charm of pre-trained vision-language models is to build a bridge between visual and textual domains. In this paper, we present a novel framework called BIKE which utilizes the cross-modal bridge to explore bidirectional knowledge: i) We propose a Video Attribute Association mechanism which leverages the Video-to-Text knowledge to generate textual auxiliary attributes to complement video recognition. ii) We also present a Temporal Concept Spotting mechanism which uses the Text-to-Video expertise to capture temporal saliency in a parameter-free manner to yield enhanced video representation. The extensive studies on popular video datasets (ie, Kinetics-400 & 600, UCF-101, HMDB-51 and ActivityNet) show that our method achieves state-of-the-art performance in most recognition scenarios, eg, general, zero-shot, and few-shot video recognition. To the best of our knowledge, our best model achieves a state-of-the-art accuracy of 88.4% on challenging Kinetics-400 with the released CLIP pre-trained model.

Understanding objects is a central building block of artificial intelligence, especially for embodied AI. Even though object recognition excels with deep learning, current machines still struggle to learn higher-level knowledge, e.g., what attributes an object has, and what can we do with an object. In this work, we propose a challenging Object Concept Learning (OCL) task to push the envelope of object understanding. It requires machines to reason out object affordances and simultaneously give the reason: what attributes make an object possesses these affordances. To support OCL, we build a densely annotated knowledge base including extensive labels for three levels of object concept (category, attribute, affordance), and the causal relations of three levels. By analyzing the causal structure of OCL, we present a baseline, Object Concept Reasoning Network (OCRN). It leverages causal intervention and concept instantiation to infer the three levels following their causal relations. In experiments, OCRN effectively infers the object knowledge while following the causalities well. Our data and code are available at https://mvig-rhos.com/ocl.

视觉检索中的大多数现有方法是通过比较其全局特征向量的两种方式，该矢量错过了足够的信息并缺乏可解释性，检测图像或视频中的对象，并将文本与依赖复杂的模型设计或建模的精细元素对齐通过较低效率遭受视觉和文本令牌的交叉注意相互作用。为了解决这些局限性，最近的一些作品简单地汇总了代币的相似性以实现细粒度的对齐方式，但它们缺乏直观的解释，并且忽略了令牌级特征和具有高级语义的全球表示之间的关系。在这项工作中，我们重新考虑细粒度的跨模式对准，并为其设计一种新的模型不合命固式配方。我们还揭开了最近的流行作品的神秘面纱，并将其纳入我们的计划。此外，受最佳运输理论的启发，我们引入了\ emph {tokenflow}，这是对拟议方案的实例化。通过仅修改相似性函数，我们方法的性能与主要视频文本检索基准上具有重型模型设计的SOTA算法相当。可视化进一步表明\ emph {tokenflow}成功利用细粒度的信息并获得了更好的解释性。