智能手表或健身追踪器由于负担得起和纵向监测功能而获得了潜在的健康跟踪设备的广泛欢迎。为了进一步扩大其健康跟踪能力，近年来，研究人员开始研究在实时利用光摄影学（PPG）数据中进行心房颤动（AF）检测的可能性，这是一种几乎所有智能手表中广泛使用的廉价传感器。从PPG信号检测AF检测的重大挑战来自智能手表PPG信号中的固有噪声。在本文中，我们提出了一种基于深度学习的新方法，即利用贝叶斯深度学习的力量来准确地从嘈杂的PPG信号中推断出AF风险，同时提供了预测的不确定性估计。在两个公开可用数据集上进行的广泛实验表明，我们提出的方法贝尼斯甲的表现优于现有的最新方法。此外，贝内斯比特（Bayesbeat）的参数比最先进的基线方法要少40-200倍，使其适合在资源约束可穿戴设备中部署。

在线仇恨言论已成为小时的需求。但是，由于几种地缘政治和文化原因，对此类活动的禁令是不可行的。为了减少问题的严重性，在本文中，我们介绍了一项新颖的任务，仇恨言语归一化，旨在削弱在线帖子表现出的仇恨强度。仇恨言语归一化的意图不是支持仇恨，而是为用户提供对非讨厌的垫脚石，同时为在线平台提供更多时间来监视用户行为的任何改进。为此，我们手动策划了平行语料库 - 仇恨文本及其标准化的同行（标准化文本较不憎恨，更良性）。我们介绍了NACL，这是一个简单而有效的仇恨言语归一化模型，该模型在三个阶段运行 - 首先，它测量了原始样本的仇恨强度；其次，它标识了其中的仇恨跨度；最后，它通过解释仇恨跨度来降低仇恨强度。我们进行了广泛的实验，以通过三向评估（内在，外部和人类研究）来衡量NaCl的功效。我们观察到，NaCl优于六个基准-NACL的强度预测得分为0.1365 RMSE，在SPAN识别中获得0.622 F1分数，而82.27 BLEU和80.05的差异和80.05的困惑为归一化​​文本生成。我们进一步显示了NACL在其他平台上的普遍性（Reddit，Facebook，GAB）。将NaCl的交互式原型放在一起进行用户研究。此外，该工具正在WIPRO AI的真实环境中部署，这是其在线平台上处理有害内容的任务的一部分。

面部及其表达是数字图像的有效科目之一。检测图像的情绪是计算机视野领域的古代任务;然而，从图像进行反向合成的面部表达式 - 是非常新的。使用不同面部表情的再生图像的这种操作，或者改变图像中的现有表达需要生成的对抗网络（GaN）。在本文中，我们的目标是使用GaN改变图像中的面部表情，其中具有初始表达式（即，快乐）的输入图像被改变为同一个人的不同表达式（即，厌恶）。我们在Mug数据集的修改版本上使用了Stargn技术来完成此目标。此外，我们通过在从给定文本中的情感指示的图像中重塑面部表情进一步扩展我们的工作。因此，我们应用了一个长期的短期内存（LSTM）方法来从文本中提取情绪并将其转发给我们的表达式更改模块。作为我们的工作管道的演示，我们还创建了一个博客的应用程序原型，该博客将根据用户的文本情绪与不同的表达式重新生成配置文件图片。

Deep neural networks (DNNs) are vulnerable to a class of attacks called "backdoor attacks", which create an association between a backdoor trigger and a target label the attacker is interested in exploiting. A backdoored DNN performs well on clean test images, yet persistently predicts an attacker-defined label for any sample in the presence of the backdoor trigger. Although backdoor attacks have been extensively studied in the image domain, there are very few works that explore such attacks in the video domain, and they tend to conclude that image backdoor attacks are less effective in the video domain. In this work, we revisit the traditional backdoor threat model and incorporate additional video-related aspects to that model. We show that poisoned-label image backdoor attacks could be extended temporally in two ways, statically and dynamically, leading to highly effective attacks in the video domain. In addition, we explore natural video backdoors to highlight the seriousness of this vulnerability in the video domain. And, for the first time, we study multi-modal (audiovisual) backdoor attacks against video action recognition models, where we show that attacking a single modality is enough for achieving a high attack success rate.

Unmanned aerial vehicle (UAV) swarms are considered as a promising technique for next-generation communication networks due to their flexibility, mobility, low cost, and the ability to collaboratively and autonomously provide services. Distributed learning (DL) enables UAV swarms to intelligently provide communication services, multi-directional remote surveillance, and target tracking. In this survey, we first introduce several popular DL algorithms such as federated learning (FL), multi-agent Reinforcement Learning (MARL), distributed inference, and split learning, and present a comprehensive overview of their applications for UAV swarms, such as trajectory design, power control, wireless resource allocation, user assignment, perception, and satellite communications. Then, we present several state-of-the-art applications of UAV swarms in wireless communication systems, such us reconfigurable intelligent surface (RIS), virtual reality (VR), semantic communications, and discuss the problems and challenges that DL-enabled UAV swarms can solve in these applications. Finally, we describe open problems of using DL in UAV swarms and future research directions of DL enabled UAV swarms. In summary, this survey provides a comprehensive survey of various DL applications for UAV swarms in extensive scenarios.

Compared to regular cameras, Dynamic Vision Sensors or Event Cameras can output compact visual data based on a change in the intensity in each pixel location asynchronously. In this paper, we study the application of current image-based SLAM techniques to these novel sensors. To this end, the information in adaptively selected event windows is processed to form motion-compensated images. These images are then used to reconstruct the scene and estimate the 6-DOF pose of the camera. We also propose an inertial version of the event-only pipeline to assess its capabilities. We compare the results of different configurations of the proposed algorithm against the ground truth for sequences of two publicly available event datasets. We also compare the results of the proposed event-inertial pipeline with the state-of-the-art and show it can produce comparable or more accurate results provided the map estimate is reliable.

With Twitter's growth and popularity, a huge number of views are shared by users on various topics, making this platform a valuable information source on various political, social, and economic issues. This paper investigates English tweets on the Russia-Ukraine war to analyze trends reflecting users' opinions and sentiments regarding the conflict. The tweets' positive and negative sentiments are analyzed using a BERT-based model, and the time series associated with the frequency of positive and negative tweets for various countries is calculated. Then, we propose a method based on the neighborhood average for modeling and clustering the time series of countries. The clustering results provide valuable insight into public opinion regarding this conflict. Among other things, we can mention the similar thoughts of users from the United States, Canada, the United Kingdom, and most Western European countries versus the shared views of Eastern European, Scandinavian, Asian, and South American nations toward the conflict.

The performance of the Deep Learning (DL) models depends on the quality of labels. In some areas, the involvement of human annotators may lead to noise in the data. When these corrupted labels are blindly regarded as the ground truth (GT), DL models suffer from performance deficiency. This paper presents a method that aims to learn a confident model in the presence of noisy labels. This is done in conjunction with estimating the uncertainty of multiple annotators. We robustly estimate the predictions given only the noisy labels by adding entropy or information-based regularizer to the classifier network. We conduct our experiments on a noisy version of MNIST, CIFAR-10, and FMNIST datasets. Our empirical results demonstrate the robustness of our method as it outperforms or performs comparably to other state-of-the-art (SOTA) methods. In addition, we evaluated the proposed method on the curated dataset, where the noise type and level of various annotators depend on the input image style. We show that our approach performs well and is adept at learning annotators' confusion. Moreover, we demonstrate how our model is more confident in predicting GT than other baselines. Finally, we assess our approach for segmentation problem and showcase its effectiveness with experiments.

This paper deals with the problem of statistical and system heterogeneity in a cross-silo Federated Learning (FL) framework where there exist a limited number of Consumer Internet of Things (CIoT) devices in a smart building. We propose a novel Graph Signal Processing (GSP)-inspired aggregation rule based on graph filtering dubbed ``G-Fedfilt''. The proposed aggregator enables a structured flow of information based on the graph's topology. This behavior allows capturing the interconnection of CIoT devices and training domain-specific models. The embedded graph filter is equipped with a tunable parameter which enables a continuous trade-off between domain-agnostic and domain-specific FL. In the case of domain-agnostic, it forces G-Fedfilt to act similar to the conventional Federated Averaging (FedAvg) aggregation rule. The proposed G-Fedfilt also enables an intrinsic smooth clustering based on the graph connectivity without explicitly specified which further boosts the personalization of the models in the framework. In addition, the proposed scheme enjoys a communication-efficient time-scheduling to alleviate the system heterogeneity. This is accomplished by adaptively adjusting the amount of training data samples and sparsity of the models' gradients to reduce communication desynchronization and latency. Simulation results show that the proposed G-Fedfilt achieves up to $3.99\% $ better classification accuracy than the conventional FedAvg when concerning model personalization on the statistically heterogeneous local datasets, while it is capable of yielding up to $2.41\%$ higher accuracy than FedAvg in the case of testing the generalization of the models.

Learning models are highly dependent on data to work effectively, and they give a better performance upon training on big datasets. Massive research exists in the literature to address the dataset adequacy issue. One promising approach for solving dataset adequacy issues is the data augmentation (DA) approach. In DA, the amount of training data instances is increased by making different transformations on the available data instances to generate new correct and representative data instances. DA increases the dataset size and its variability, which enhances the model performance and its prediction accuracy. DA also solves the class imbalance problem in the classification learning techniques. Few studies have recently considered DA in the Arabic language. These studies rely on traditional augmentation approaches, such as paraphrasing by using rules or noising-based techniques. In this paper, we propose a new Arabic DA method that employs the recent powerful modeling technique, namely the AraGPT-2, for the augmentation process. The generated sentences are evaluated in terms of context, semantics, diversity, and novelty using the Euclidean, cosine, Jaccard, and BLEU distances. Finally, the AraBERT transformer is used on sentiment classification tasks to evaluate the classification performance of the augmented Arabic dataset. The experiments were conducted on four sentiment Arabic datasets, namely AraSarcasm, ASTD, ATT, and MOVIE. The selected datasets vary in size, label number, and unbalanced classes. The results show that the proposed methodology enhanced the Arabic sentiment text classification on all datasets with an increase in F1 score by 4% in AraSarcasm, 6% in ASTD, 9% in ATT, and 13% in MOVIE.