问题答案(QA)是自然语言处理中最具挑战性的最具挑战性的问题之一(NLP)。问答(QA)系统试图为给定问题产生答案。这些答案可以从非结构化或结构化文本生成。因此,QA被认为是可以用于评估文本了解系统的重要研究区域。大量的QA研究致力于英语语言,调查最先进的技术和实现最先进的结果。然而,由于阿拉伯QA中的研究努力和缺乏大型基准数据集,在阿拉伯语问答进展中的研究努力得到了很大速度的速度。最近许多预先接受的语言模型在许多阿拉伯语NLP问题中提供了高性能。在这项工作中,我们使用四个阅读理解数据集来评估阿拉伯QA的最先进的接种变压器模型,它是阿拉伯语 - 队,ArcD,AQAD和TYDIQA-GoldP数据集。我们微调并比较了Arabertv2基础模型,ArabertV0.2大型型号和ARAElectra模型的性能。在最后,我们提供了一个分析,了解和解释某些型号获得的低绩效结果。
translated by 谷歌翻译
An important component of an automated fact-checking system is the claim check-worthiness detection system, which ranks sentences by prioritising them based on their need to be checked. Despite a body of research tackling the task, previous research has overlooked the challenging nature of identifying check-worthy claims across different topics. In this paper, we assess and quantify the challenge of detecting check-worthy claims for new, unseen topics. After highlighting the problem, we propose the AraCWA model to mitigate the performance deterioration when detecting check-worthy claims across topics. The AraCWA model enables boosting the performance for new topics by incorporating two components for few-shot learning and data augmentation. Using a publicly available dataset of Arabic tweets consisting of 14 different topics, we demonstrate that our proposed data augmentation strategy achieves substantial improvements across topics overall, where the extent of the improvement varies across topics. Further, we analyse the semantic similarities between topics, suggesting that the similarity metric could be used as a proxy to determine the difficulty level of an unseen topic prior to undertaking the task of labelling the underlying sentences.
translated by 谷歌翻译
Brain network provides important insights for the diagnosis of many brain disorders, and how to effectively model the brain structure has become one of the core issues in the domain of brain imaging analysis. Recently, various computational methods have been proposed to estimate the causal relationship (i.e., effective connectivity) between brain regions. Compared with traditional correlation-based methods, effective connectivity can provide the direction of information flow, which may provide additional information for the diagnosis of brain diseases. However, existing methods either ignore the fact that there is a temporal-lag in the information transmission across brain regions, or simply set the temporal-lag value between all brain regions to a fixed value. To overcome these issues, we design an effective temporal-lag neural network (termed ETLN) to simultaneously infer the causal relationships and the temporal-lag values between brain regions, which can be trained in an end-to-end manner. In addition, we also introduce three mechanisms to better guide the modeling of brain networks. The evaluation results on the Alzheimer's Disease Neuroimaging Initiative (ADNI) database demonstrate the effectiveness of the proposed method.
translated by 谷歌翻译
In this paper, we increase the availability and integration of devices in the learning process to enhance the convergence of federated learning (FL) models. To address the issue of having all the data in one location, federated learning, which maintains the ability to learn over decentralized data sets, combines privacy and technology. Until the model converges, the server combines the updated weights obtained from each dataset over a number of rounds. The majority of the literature suggested client selection techniques to accelerate convergence and boost accuracy. However, none of the existing proposals have focused on the flexibility to deploy and select clients as needed, wherever and whenever that may be. Due to the extremely dynamic surroundings, some devices are actually not available to serve as clients in FL, which affects the availability of data for learning and the applicability of the existing solution for client selection. In this paper, we address the aforementioned limitations by introducing an On-Demand-FL, a client deployment approach for FL, offering more volume and heterogeneity of data in the learning process. We make use of the containerization technology such as Docker to build efficient environments using IoT and mobile devices serving as volunteers. Furthermore, Kubernetes is used for orchestration. The Genetic algorithm (GA) is used to solve the multi-objective optimization problem due to its evolutionary strategy. The performed experiments using the Mobile Data Challenge (MDC) dataset and the Localfed framework illustrate the relevance of the proposed approach and the efficiency of the on-the-fly deployment of clients whenever and wherever needed with less discarded rounds and more available data.
translated by 谷歌翻译
作为世界上口语最广泛的语言之一,孟加拉国的使用在社交媒体世界中也在增加。讽刺是一种积极的陈述或言论,其基本的负面动机在当今的社交媒体平台中广泛使用。在过去的许多年中,英语的讽刺检测有了显着改善,但是有关孟加拉讽刺检测的情况仍然没有改变。结果,仍然很难识别孟加拉国中的讽刺,缺乏高质量的数据是主要因素。本文提出了Banglasarc,该数据集是专门为孟加拉文本数据讽刺检测的数据集。该数据集包含5112条评论/状态和从各种在线社交平台(例如Facebook,YouTube)以及一些在线博客中收集的内容。由于孟加拉语中分类评论的数据收集数量有限,因此该数据集将有助于确定讽刺的研究,认识到人们的情绪,检测到各种类型的孟加拉语表达式和其他领域。该数据集可在https://www.kaggle.com/datasets/sakibapon/banglasarc上公开获得。
translated by 谷歌翻译
了解人类流动性对于智慧城市和社会行为研究的发展至关重要。人类流动模型可用于许多应用,包括大流行控制,城市规划和交通管理。现有模型的预测用户移动性模式的准确性小于25%。人类运动的灵活本质可以证明低精度可能是合理的。确实,人类的日常运动并不僵化。此外,严格的移动性模型可能会导致用户记录中的隐藏规律性。因此,我们提出了一种新的观点,以研究和分析人类的迁移率模式并捕获其灵活性。通常,迁移率模式由一系列位置表示。我们建议通过将这些位置抽象成一组位置来定义移动性模式。标记这些位置将使我们能够检测到接近现实的隐藏模式。我们提出IMAP,这是一种单独的人类流动性模式可视化平台。我们的平台使用户可以根据历史记录可视化他们所访问的位置的图。此外,我们的平台显示使用修改后的前缀方法计算出的最频繁的移动性模式。
translated by 谷歌翻译
我们提出DIY-IPS - 自己动手 - 室内定位系统,这是一个开源实时室内定位移动应用程序。DIY-IPS通过使用可用WiFi接入点的双波段RSSI指纹识别来检测用户的室内位置。该应用程序可以无需额外的基础设施费用即可实时检测用户的室内位置。我们发布了我们的应用程序作为开源,以节省其他研究人员的时间来重新创建它。该应用程序使研究人员/用户能够(1)使用地面真相标签收集室内定位数据集,(2)以更高的准确性或其他研究目的自定义应用程序(3)通过用地面真相实时测试测试修改方法的准确性。我们进行了初步实验,以证明应用程序的有效性。
translated by 谷歌翻译
这项研究是有关阿拉伯历史文档的光学特征识别(OCR)的一系列研究的第二阶段,并研究了不同的建模程序如何与问题相互作用。第一项研究研究了变压器对我们定制的阿拉伯数据集的影响。首次研究的弊端之一是训练数据的规模,由于缺乏资源,我们的3000万张图像中仅15000张图像。另外,我们添加了一个图像增强层,时间和空间优化和后校正层,以帮助该模型预测正确的上下文。值得注意的是,我们提出了一种使用视觉变压器作为编码器的端到端文本识别方法,即BEIT和Vanilla Transformer作为解码器,消除了CNNs以进行特征提取并降低模型的复杂性。实验表明,我们的端到端模型优于卷积骨架。该模型的CER为4.46%。
translated by 谷歌翻译
数据驱动的方法来协助手术室(OR)工作流程分析取决于耗时且收集昂贵的大型策划数据集。另一方面,我们看到最近从监督学习转变为可以从未标记数据集中学习表示的自我监督和/或无监督学习方法。在本文中,我们利用机器人手术中捕获的未标记数据,并提出了一种新颖的方法,以融合单个视频框架或图像的多模式数据。我们将多模式数据视为不同的观点,而不是同一图像或视频框架的不同图像或视频框架的不同增强(或“视图”)作为不同的观点,可以通过聚类以无监督的方式训练模型。我们将我们的方法与其他最新方法进行了比较,结果表明,我们的方法在手术视频活动识别和语义细分方面的表现出色。
translated by 谷歌翻译
在本文中,我们得出了一种新方法来确定数据集的共享特征,通过采用联合非负矩阵分解并分析所得因素化。我们的方法使用两个数据集矩阵的联合分解$ x_1,x_2 $中的非负矩阵$ x_1 = as_1 = as_1,x_2 = as_2 $得出一个相似的度量,以确定$ x_1的共享基础的良好,x_1,x_2 $近似于每个dataset。我们还提出了基于此方法和学习分解的数据集距离度量。我们的方法能够成功地在图像和文本数据集中成功身份差异。潜在的应用包括分类,检测窃或其他操纵以及数据集之间的学习关系。
translated by 谷歌翻译