We propose, Monte Carlo Nonlocal physics-informed neural networks (MC-Nonlocal-PINNs), which is a generalization of MC-fPINNs in \cite{guo2022monte}, for solving general nonlocal models such as integral equations and nonlocal PDEs. Similar as in MC-fPINNs, our MC-Nonlocal-PINNs handle the nonlocal operators in a Monte Carlo way, resulting in a very stable approach for high dimensional problems. We present a variety of test problems, including high dimensional Volterra type integral equations, hypersingular integral equations and nonlocal PDEs, to demonstrate the effectiveness of our approach.

We tackle a new problem of multi-view camera and subject registration in the bird's eye view (BEV) without pre-given camera calibration. This is a very challenging problem since its only input is several RGB images from different first-person views (FPVs) for a multi-person scene, without the BEV image and the calibration of the FPVs, while the output is a unified plane with the localization and orientation of both the subjects and cameras in a BEV. We propose an end-to-end framework solving this problem, whose main idea can be divided into following parts: i) creating a view-transform subject detection module to transform the FPV to a virtual BEV including localization and orientation of each pedestrian, ii) deriving a geometric transformation based method to estimate camera localization and view direction, i.e., the camera registration in a unified BEV, iii) making use of spatial and appearance information to aggregate the subjects into the unified BEV. We collect a new large-scale synthetic dataset with rich annotations for evaluation. The experimental results show the remarkable effectiveness of our proposed method.

Accurate airway extraction from computed tomography (CT) images is a critical step for planning navigation bronchoscopy and quantitative assessment of airway-related chronic obstructive pulmonary disease (COPD). The existing methods are challenging to sufficiently segment the airway, especially the high-generation airway, with the constraint of the limited label and cannot meet the clinical use in COPD. We propose a novel two-stage 3D contextual transformer-based U-Net for airway segmentation using CT images. The method consists of two stages, performing initial and refined airway segmentation. The two-stage model shares the same subnetwork with different airway masks as input. Contextual transformer block is performed both in the encoder and decoder path of the subnetwork to finish high-quality airway segmentation effectively. In the first stage, the total airway mask and CT images are provided to the subnetwork, and the intrapulmonary airway mask and corresponding CT scans to the subnetwork in the second stage. Then the predictions of the two-stage method are merged as the final prediction. Extensive experiments were performed on in-house and multiple public datasets. Quantitative and qualitative analysis demonstrate that our proposed method extracted much more branches and lengths of the tree while accomplishing state-of-the-art airway segmentation performance. The code is available at https://github.com/zhaozsq/airway_segmentation.

Sparsity of formal knowledge and roughness of non-ontological construction make sparsity problem particularly prominent in Open Knowledge Graphs (OpenKGs). Due to sparse links, learning effective representation for few-shot entities becomes difficult. We hypothesize that by introducing negative samples, a contrastive learning (CL) formulation could be beneficial in such scenarios. However, existing CL methods model KG triplets as binary objects of entities ignoring the relation-guided ternary propagation patterns and they are too generic, i.e., they ignore zero-shot, few-shot and synonymity problems that appear in OpenKGs. To address this, we propose TernaryCL, a CL framework based on ternary propagation patterns among head, relation and tail. TernaryCL designs Contrastive Entity and Contrastive Relation to mine ternary discriminative features with both negative entities and relations, introduces Contrastive Self to help zero- and few-shot entities learn discriminative features, Contrastive Synonym to model synonymous entities, and Contrastive Fusion to aggregate graph features from multiple paths. Extensive experiments on benchmarks demonstrate the superiority of TernaryCL over state-of-the-art models.

最近，深度加固学习（RL）在机器人操作应用中表现出了一些令人印象深刻的成功。但是，由于样本效率和安全性问题，现实世界中的培训机器人是不平凡的。提出了SIM到现实的转移来解决上述问题，但引入了一个名为“现实差距”的新问题。在这项工作中，我们通过使用单个摄像头的输入来解决上述问题，为基于视觉的组装任务引入SIM模型学习框架，并在模拟环境中进行培训。我们提出了一种基于循环一致的生成对抗网络（CycleGAN）和力量控制转移方法来弥合现实差距的域适应方法。我们证明，在模拟环境中训练有训练的拟议框架可以成功地转移到真实的孔洞设置中。

最近，基于卷积神经网络（CNN）的合成孔径雷达（SAR）图像的变更检测方法已增加了研究的注意力。但是，现有的基于CNN的方法忽略了多层卷积之间的相互作用，并且涉及的预分类限制了网络优化。为此，我们提出了一个基于注意力的噪声网络，称为Lantnet。特别是，我们设计了一个层注意模块，该模块可以适应不同卷积层的特征。此外，我们设计了一个耐噪声损失函数，可有效抑制嘈杂标签的影响。因此，该模型对预制结果中的嘈杂标签不敏感。三个SAR数据集的实验结果表明，与几种最新方法相比，所提出的Lantnet性能更好。源代码可在https://github.com/summitgao/lantnet上找到

用于流量操作和控制的现有数据收集方法通常依赖于基于基础架构的环路探测器或探测器车辆轨迹。连接和自动化的车辆（CAVS）不仅可以报告有关自己的数据，而且可以提供所有检测到的周围车辆的状态。从多个CAVS以及基础设施传感器（例如Lidar）的感知数据集成，即使在非常低的渗透率下也可以提供更丰富的信息。本文旨在开发合作数据收集系统，该系统集成了来自基础架构和CAVS的LiDar Point Cloud数据，以为各种运输应用创建合作感知环境。最新的3D检测模型用于在合并点云中检测车辆。我们在与Carla和Sumo的共模拟平台中测试了具有最大压力自适应信号控制模型的提出的合作感知环境。结果表明，CAV和基础设施传感器的渗透率非常低，足以实现可比性的性能，而连接车辆（CV）的渗透率为30％或更高。我们还显示了不同CAV渗透率下的等效CV渗透率（E-CVPR），以证明合作感知环境的数据收集效率。

可变形的模型对于3D面的统计建模至关重要。以前的可变形模型的作品主要集中在大规模的面部几何形状上，但忽略了面部细节。本文通过学习一种结构含义的可编辑形态模型（SEMM）来增强形象模型。 SEMM基于皱纹线的距离字段引入了细节结构表示，并以细节位移进行建模，以建立更好的对应关系并实现对皱纹结构的直观操纵。此外，SEMM还引入了两个转换模块，以将表达式的融合体权重和年龄值转化为潜在空间的变化，从而在维持身份的同时可以有效的语义细节编辑。广泛的实验表明，所提出的模型紧凑地表示面部细节，在定性和定量上表达动画中的先前方法，并实现了面部细节的有效年龄编辑和皱纹线编辑。代码和模型可在https://github.com/gerwang/facial-detail-manipulation上找到。

Human group detection, which splits crowd of people into groups, is an important step for video-based human social activity analysis. The core of human group detection is the human social relation representation and division.In this paper, we propose a new two-stage multi-head framework for human group detection. In the first stage, we propose a human behavior simulator head to learn the social relation feature embedding, which is self-supervisely trained by leveraging the socially grounded multi-person behavior relationship. In the second stage, based on the social relation embedding, we develop a self-attention inspired network for human group detection. Remarkable performance on two state-of-the-art large-scale benchmarks, i.e., PANDA and JRDB-Group, verifies the effectiveness of the proposed framework. Benefiting from the self-supervised social relation embedding, our method can provide promising results with very few (labeled) training data. We will release the source code to the public.

在本文中，我们介绍了VCSL（视频复制段本地化），这是一种新的综合段级注释的视频复制数据集。与受视频级注释或小规模限制的现有复制检测数据集相比，VCSL不仅具有两个段级标签的数据级，其中有160k现实的视频副本对，其中包含超过280k的本地化copied seggment对，而且还包含超过280k涵盖各种视频类别和各种视频持续时间。每个收集的视频对中的所有复制段均经过手动提取，并伴随着精确注释的启动和结束时间戳。除了数据集外，我们还提出了一种新颖的评估协议，该协议可以更好地衡量视频对之间复制重叠段的预测准确性，并在不同情况下显示出改善的适应性。通过使用拟议的数据集和评估指标对几个基线和最先进的细分级视频副本检测方法进行基准测试，我们提供了一项全面的分析，可以揭示当前方法的优势和劣势作品。 VCSL数据集，公制和基准代码均在https://github.com/alipay/vcsl上公开获得。