In this paper, we allocate IoT devices as resources for smart services with time-constrained resource requirements. The allocation method named as BRAD can work under multiple resource scenarios with diverse resource richnesses, availabilities and costs, such as the intelligent healthcare system deployed by Harbin Institute of Technology (HIT-IHC). The allocation aims for bimetric-balancing under the multi-scenario case, i.e., the profit and cost associated with service satisfaction are jointly optimised and balanced wisely. Besides, we abstract IoT devices as digital objects (DO) to make them easier to interact with during resource allocation. Considering that the problem is NP-Hard and the optimisation objective is not differentiable, we utilise Grey Wolf Optimisation (GWO) algorithm as the model optimiser. Specifically, we tackle the deficiencies of GWO and significantly improve its performance by introducing three new mechanisms to form the BRAD-GWA algorithm. Comprehensive experiments are conducted on realistic HIT-IHC IoT testbeds and several algorithms are compared, including the allocation method originally used by HIT-IHC system to verify the effectiveness of the BRAD-GWA. The BRAD-GWA achieves a 3.14 times and 29.6% objective reduction compared with the HIT-IHC and the original GWO algorithm, respectively.

对于人类，使用视觉信号了解对象之间的关系是直观的。但是，对于人工智能，这项任务仍然具有挑战性。研究人员在研究语义关系检测方面取得了重大进展，例如人类对象的相互作用检测和视觉关系检测。我们将视觉关系的研究从语义到几何发展迈进了一步。在具体上，我们预测相对阻塞和相对距离关系。但是，从单个图像中检测这些关系具有挑战性。强制集中注意特定于任务的区域在成功检测这些关系方面起着关键作用。在这项工作中，（1）我们提出了一种新颖的三年级架构，作为集中注意力的基础架构。 2）我们使用广义交叉框预测任务有效地指导我们的模型专注于遮挡特定区域； 3）我们的模型在距离感知关系检测方面实现了新的最新性能。具体而言，我们的模型将F1分数从33.8％提高到38.6％，并将闭塞F1得分从34.4％提高到41.2％。我们的代码公开可用。

Bird's Eye View（BEV）语义分割在自动驾驶的空间传感中起着至关重要的作用。尽管最近的文献在BEV MAP的理解上取得了重大进展，但它们都是基于基于摄像头的系统，这些系统难以处理遮挡并检测复杂的交通场景中的遥远对象。车辆到车辆（V2V）通信技术使自动驾驶汽车能够共享感应信息，与单代理系统相比，可以显着改善感知性能和范围。在本文中，我们提出了Cobevt，这是可以合作生成BEV MAP预测的第一个通用多代理多机构感知框架。为了有效地从基础变压器体系结构中的多视图和多代理数据融合相机功能，我们设计了融合的轴向注意力或传真模块，可以捕获跨视图和代理的局部和全局空间交互。 V2V感知数据集OPV2V的广泛实验表明，COBEVT实现了合作BEV语义分段的最新性能。此外，COBEVT被证明可以推广到其他任务，包括1）具有单代理多摄像机的BEV分割和2）具有多代理激光雷达系统的3D对象检测，并实现具有实时性能的最新性能时间推理速度。

在本文中，我们调查了车辆到所有（V2X）通信的应用，以提高自动驾驶汽车的感知性能。我们使用新型视觉变压器提供了一个与V2X通信的强大合作感知框架。具体而言，我们建立了一个整体关注模型，即V2X-VIT，以有效地融合跨道路代理（即车辆和基础设施）的信息。 V2X-VIT由异质多代理自我注意和多尺度窗口自我注意的交替层组成，该层捕获了代理间的相互作用和全面的空间关系。这些关键模块在统一的变压器体系结构中设计，以应对常见的V2X挑战，包括异步信息共享，姿势错误和V2X组件的异质性。为了验证我们的方法，我们使用Carla和OpenCDA创建了一个大规模的V2X感知数据集。广泛的实验结果表明，V2X-VIT设置了3D对象检测的新最先进的性能，即使在恶劣的嘈杂环境下，也可以实现强大的性能。该代码可在https://github.com/derrickxunu/v2x-vit上获得。

双链DNA断裂（DSB）是一种DNA损伤的形式，可导致异常染色体重排。基于高吞吐量实验的最近技术具有明显的高成本和技术挑战。因此，我们设计了一种基于图形的神经网络的方法来预测DSB（GraphDSB），使用DNA序列特征和染色体结构信息。为了提高模型的表达能力，我们引入跳跃知识架构和几种有效的结构编码方法。结构信息对DSB预测的贡献是通过来自正常人体表皮角蛋白细胞（NHEK）和慢性髓性白血病细胞系（K562）的数据集的实验验证，并且消融研究进一步证明了所提出的设计部件的有效性GraphDSB框架。最后，我们使用GNNExplainer分析节点特征和拓扑到DSB预测的贡献，并证明了5-MER DNA序列特征和两种染色质相互作用模式的高贡献。

锂离子电池（LIBS）的数学建模是先进电池管理中的主要挑战。本文提出了两个新的框架，将基于机器的基于机器的模型集成，以实现LIBS的高精度建模。该框架的特征在于通知物理模型的状态信息的机器学习模型，从而实现物理和机器学习之间的深度集成。基于框架，通过将电化学模型和等效电路模型分别与前馈神经网络组合，构造了一系列混合模型。混合模型在结构中相对令人惊讶，可以在广泛的C速率下提供相当大的预测精度，如广泛的模拟和实验所示。该研究进一步扩展以进行衰老感知混合建模，导致杂交模型意识到意识到健康状态以进行预测。实验表明，该模型在整个Lib的循环寿命中具有很高的预测精度。

Benefiting from the intrinsic supervision information exploitation capability, contrastive learning has achieved promising performance in the field of deep graph clustering recently. However, we observe that two drawbacks of the positive and negative sample construction mechanisms limit the performance of existing algorithms from further improvement. 1) The quality of positive samples heavily depends on the carefully designed data augmentations, while inappropriate data augmentations would easily lead to the semantic drift and indiscriminative positive samples. 2) The constructed negative samples are not reliable for ignoring important clustering information. To solve these problems, we propose a Cluster-guided Contrastive deep Graph Clustering network (CCGC) by mining the intrinsic supervision information in the high-confidence clustering results. Specifically, instead of conducting complex node or edge perturbation, we construct two views of the graph by designing special Siamese encoders whose weights are not shared between the sibling sub-networks. Then, guided by the high-confidence clustering information, we carefully select and construct the positive samples from the same high-confidence cluster in two views. Moreover, to construct semantic meaningful negative sample pairs, we regard the centers of different high-confidence clusters as negative samples, thus improving the discriminative capability and reliability of the constructed sample pairs. Lastly, we design an objective function to pull close the samples from the same cluster while pushing away those from other clusters by maximizing and minimizing the cross-view cosine similarity between positive and negative samples. Extensive experimental results on six datasets demonstrate the effectiveness of CCGC compared with the existing state-of-the-art algorithms.

As one of the most important psychic stress reactions, micro-expressions (MEs), are spontaneous and transient facial expressions that can reveal the genuine emotions of human beings. Thus, recognizing MEs (MER) automatically is becoming increasingly crucial in the field of affective computing, and provides essential technical support in lie detection, psychological analysis and other areas. However, the lack of abundant ME data seriously restricts the development of cutting-edge data-driven MER models. Despite the recent efforts of several spontaneous ME datasets to alleviate this problem, it is still a tiny amount of work. To solve the problem of ME data hunger, we construct a dynamic spontaneous ME dataset with the largest current ME data scale, called DFME (Dynamic Facial Micro-expressions), which includes 7,526 well-labeled ME videos induced by 671 participants and annotated by more than 20 annotators throughout three years. Afterwards, we adopt four classical spatiotemporal feature learning models on DFME to perform MER experiments to objectively verify the validity of DFME dataset. In addition, we explore different solutions to the class imbalance and key-frame sequence sampling problems in dynamic MER respectively on DFME, so as to provide a valuable reference for future research. The comprehensive experimental results show that our DFME dataset can facilitate the research of automatic MER, and provide a new benchmark for MER. DFME will be published via https://mea-lab-421.github.io.

Face Anti-spoofing (FAS) is essential to secure face recognition systems from various physical attacks. However, recent research generally focuses on short-distance applications (i.e., phone unlocking) while lacking consideration of long-distance scenes (i.e., surveillance security checks). In order to promote relevant research and fill this gap in the community, we collect a large-scale Surveillance High-Fidelity Mask (SuHiFiMask) dataset captured under 40 surveillance scenes, which has 101 subjects from different age groups with 232 3D attacks (high-fidelity masks), 200 2D attacks (posters, portraits, and screens), and 2 adversarial attacks. In this scene, low image resolution and noise interference are new challenges faced in surveillance FAS. Together with the SuHiFiMask dataset, we propose a Contrastive Quality-Invariance Learning (CQIL) network to alleviate the performance degradation caused by image quality from three aspects: (1) An Image Quality Variable module (IQV) is introduced to recover image information associated with discrimination by combining the super-resolution network. (2) Using generated sample pairs to simulate quality variance distributions to help contrastive learning strategies obtain robust feature representation under quality variation. (3) A Separate Quality Network (SQN) is designed to learn discriminative features independent of image quality. Finally, a large number of experiments verify the quality of the SuHiFiMask dataset and the superiority of the proposed CQIL.

Image Virtual try-on aims at replacing the cloth on a personal image with a garment image (in-shop clothes), which has attracted increasing attention from the multimedia and computer vision communities. Prior methods successfully preserve the character of clothing images, however, occlusion remains a pernicious effect for realistic virtual try-on. In this work, we first present a comprehensive analysis of the occlusions and categorize them into two aspects: i) Inherent-Occlusion: the ghost of the former cloth still exists in the try-on image; ii) Acquired-Occlusion: the target cloth warps to the unreasonable body part. Based on the in-depth analysis, we find that the occlusions can be simulated by a novel semantically-guided mixup module, which can generate semantic-specific occluded images that work together with the try-on images to facilitate training a de-occlusion try-on (DOC-VTON) framework. Specifically, DOC-VTON first conducts a sharpened semantic parsing on the try-on person. Aided by semantics guidance and pose prior, various complexities of texture are selectively blending with human parts in a copy-and-paste manner. Then, the Generative Module (GM) is utilized to take charge of synthesizing the final try-on image and learning to de-occlusion jointly. In comparison to the state-of-the-art methods, DOC-VTON achieves better perceptual quality by reducing occlusion effects.