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An Epidemic Model Based on Intra- and Inter-group Interactions 基于群体内和群体间相互作用的流行病模型
IF 2.4 3区 计算机科学 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2023-05-24 DOI: 10.1109/CSCWD57460.2023.10152787
Wencong Geng, Guijuan Zhang, Dianjie Lu
The global spread of COVID-19 causes great losses to human society. Accurate calculation of the scale of epidemic spread is of great significance for the implementation of corresponding epidemic prevention measures. However, the existing method ignores the group formed by social relations of the population, which reduces the accuracy of the epidemic spread number calculation. In this paper, we propose an epidemic model based on intra- and inter-group interactions. Firstly, we construct a dual network model of epidemic spread based on intra- and inter-group interactions. The network describes how epidemics spread intra- and inter-group. To capture the intergroup influences, we construct a model for social mobility to calculate the inter-group spread rate. Secondly, we propose a computational model for the epidemic spread. We calculate the infection probability of groups in the upper layer network by using a continuous-time Markov chain (CTMC). We describe a dynamic evolution of the intra-group infection in the underlying network based on the mean field equation. And the number of infections in the population is calculated by integrating intra- and inter-group effects. Finally, we implement an epidemic spread simulation system to visualize the spread process. The experimental results show that the model can analyze the epidemic spread process more accurately.
新冠肺炎疫情在全球蔓延,给人类社会造成巨大损失。准确计算疫情传播规模,对实施相应的防疫措施具有重要意义。但是,现有的方法忽略了人群社会关系形成的群体,降低了疫情传播数计算的准确性。在本文中,我们提出了一个基于群体内和群体间相互作用的流行病模型。首先,我们构建了基于群体内和群体间相互作用的双网络模型。该网络描述了流行病如何在群体内和群体间传播。为了捕捉群体间的影响,我们构建了一个社会流动性模型来计算群体间的传播率。其次,我们提出了流行病传播的计算模型。我们利用连续时间马尔可夫链(CTMC)计算上层网络中群体的感染概率。基于平均场方程,描述了底层网络中群内感染的动态演化过程。人群中的感染人数是通过综合群体内和群体间的影响来计算的。最后,我们实现了一个流行病传播模拟系统来可视化传播过程。实验结果表明,该模型能较准确地分析疫情传播过程。
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引用次数: 0
Creativity Support in AI Co-creative Tools: Current Research, Challenges and Opportunities 人工智能协同创造工具中的创造力支持:当前研究、挑战和机遇
IF 2.4 3区 计算机科学 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2023-05-24 DOI: 10.1109/CSCWD57460.2023.10152832
Bin Ning, Fang Liu, Zhixiong Liu
Artificial Intelligence technology-driven Creativity Support Tools (AI-CSTs) provide specific field capability support for human creative activities. In this paper, we compare and analyze the current situation and trend of AI-CSTs design space in four aspects: creative stage, support form, support technology, and role diversity. Through a coding study and comparative analysis of 50 AI-CSTs cases, we discuss the impact of AI-CSTs on traditional workflows, the boundaries of AI-CSTs as co-creators, and how to treat AI errors, which provides insights for future AI-CSTs design. We summarize the collaboration framework in AI-CSTs. Finally, this paper also studies the information technology requirements and challenges of AI-CSTs research, which provides a new perspective to understanding the landscape of AI-CSTs.
人工智能技术驱动的创造力支持工具(AI-CSTs)为人类创造性活动提供特定的现场能力支持。本文从创意阶段、支撑形式、支撑技术、角色多样性四个方面对AI-CSTs设计空间的现状和趋势进行了比较分析。通过对50个AI- csts案例的编码研究和对比分析,我们讨论了AI- csts对传统工作流程的影响,AI- csts作为共同创造者的界限,以及如何处理AI错误,为未来的AI- csts设计提供见解。我们总结了AI-CSTs的协作框架。最后,本文还研究了AI-CSTs研究的信息技术要求和挑战,为理解AI-CSTs的格局提供了一个新的视角。
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引用次数: 1
Privileged Label Enhancement with Adaptive Graph 基于自适应图的特权标签增强
IF 2.4 3区 计算机科学 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2023-05-24 DOI: 10.1109/CSCWD57460.2023.10152848
Qin Qin, Chao Tan, Chong Li, G. Ji
Label distribution learning has gained an increasing amount of attention in comparison to single-label and multi-label learning due to its more universal capacity to communicate label ambiguity. Unfortunately, label distribution learning cannot be used directly in many real tasks, because it is very difficult to obtain the label distribution datasets, and many training sets only contain simple logical labels. To resolve this problem and recover the label distributions from the logical labels, label enhancement is proposed. This paper proposes a novel label enhancement algorithm called Privileged Label Enhancement with Adaptive Graph(PLEAG). PLEAG first apply adaptive graph to capture the hidden information between instances and treat it as privileged information. As a result, the similarity matrix of instances is not only influenced by the feature space, but is also adaptively modified in accordance with the degree of similarity between instances in the label space. Then, we adopt RSVM+ model in the paradigm of LUPI (learning with privileged information) to handle the new dataset with privileged information in order to gain better learning effect. Our comparison experiments on 12 datasets show that our proposed algorithm PLEAG , is more accurate than prior label enhancement algorithms for recovering label distribution from logical labels.
与单标签和多标签学习相比,标签分布学习由于具有更普遍的标签歧义交流能力而受到越来越多的关注。不幸的是,标签分布学习不能直接用于许多实际任务,因为很难获得标签分布数据集,而且许多训练集只包含简单的逻辑标签。为了解决这个问题并从逻辑标签中恢复标签分布,提出了标签增强。提出了一种新的标签增强算法——自适应图特权标签增强算法(PLEAG)。PLEAG首先应用自适应图捕获实例间的隐藏信息,并将其作为特权信息处理。这样,实例的相似度矩阵不仅受到特征空间的影响,而且还会根据实例在标签空间中的相似程度自适应地进行修改。然后,为了获得更好的学习效果,我们采用了LUPI (learning with privileged information)范式下的RSVM+模型对新的具有特权信息的数据集进行处理。我们在12个数据集上的对比实验表明,我们提出的PLEAG算法比之前的标签增强算法更准确地从逻辑标签中恢复标签分布。
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引用次数: 0
An Overview of Blockchain Scalability for Storage 区块链存储可扩展性概述
IF 2.4 3区 计算机科学 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2023-05-24 DOI: 10.1109/CSCWD57460.2023.10152720
Fanshu Gong, Lanju Kong, Yuxuan Lu, Jin Qian, Xinping Min
Blockchain mandates that every node store the whole chain’s history in order to address trust issues in the network. And the storage requirement becomes extremely high, severely affecting the chain’s scalability. To solve such a problem, many optimizations of storage have been proposed. In this paper, existing ways of blockchain storage scalability are described in two categories: off-chain and on-chain. The off-chain way is combined with various distributed and nondistributed storage systems. And on-chain is optimized by changing its block structure, storage rules, or technology. Blockchain technology with scalable storage has been applied in the medical industry. We assess and contrast the methods’ latency, security, and cost. And we point out the problems and challenges of the existing approaches and give an outlook on the future.
区块链要求每个节点存储整个链的历史,以解决网络中的信任问题。存储需求变得非常高,严重影响了链的可扩展性。为了解决这个问题,人们提出了许多优化存储的方法。本文将现有的区块链存储可扩展性方法分为两类:链下和链上。脱链方式结合了各种分布式和非分布式存储系统。链上通过改变区块结构、存储规则或技术来优化。具有可扩展存储的区块链技术已应用于医疗行业。我们评估并对比了这些方法的延迟、安全性和成本。指出了现有方法存在的问题和挑战,并对未来进行了展望。
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引用次数: 0
A Signal Control Algorithm of Urban Intersections based on Traffic Flow Prediction 基于交通流预测的城市交叉口信号控制算法
IF 2.4 3区 计算机科学 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2023-05-24 DOI: 10.1109/CSCWD57460.2023.10152556
Xiao-Min Hu, G. Wang, Min Li, Zi-Liang Chen
Traffic signals play an important role in traffic management, and traffic dynamics on the road can be adjusted by changing signal timing. Signal timing optimization and traffic flow prediction are traditionally separate. To improve the effect of signal control, a traffic signal control algorithm for urban intersections based on traffic flow prediction is proposed by combining these two technologies. The goal is to minimize the average delay time of the total vehicles at all signalized intersections in the road network. First, a new Prediction-based Signal Control (PSC) model is proposed, which includes a traffic flow prediction module and a signal timing optimization module. Secondly, a traffic flow prediction strategy and a quantum particle swarm optimization algorithm based on phase angle coding is designed to form the signal control algorithm proposed in this paper. Finally, the PSC algorithm is verified with real traffic data. The results show that the proposed algorithm is better than the fixed signal control and traditional adaptive control algorithms, and the reduction of total queue length and average delay time is significantly improved.
交通信号在交通管理中起着重要的作用,通过改变信号配时可以调节道路上的交通动态。传统上,信号配时优化和交通流预测是分开的。为了提高信号控制的效果,将这两种技术相结合,提出了一种基于交通流预测的城市交叉口交通信号控制算法。目标是使路网中所有信号交叉口车辆的平均延误时间最小。首先,提出了一种新的基于预测的信号控制(PSC)模型,该模型包括交通流预测模块和信号配时优化模块。其次,设计了基于相角编码的交通流预测策略和量子粒子群优化算法,构成本文提出的信号控制算法。最后,用实际交通数据对PSC算法进行了验证。结果表明,该算法优于固定信号控制和传统的自适应控制算法,在减少总队列长度和平均延迟时间方面有显著提高。
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引用次数: 0
A Framework Using Absolute Compression Hard-Threshold for Improving The Robustness of Federated Learning Model 利用绝对压缩硬阈值提高联邦学习模型鲁棒性的框架
IF 2.4 3区 计算机科学 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2023-05-24 DOI: 10.1109/CSCWD57460.2023.10152807
Yuzhang Wu, Beilun Wang
Nowadays, with the popularity of the federated learning, it becomes crucial for us to tackle the challenges, communication cost and model robustness. And targeting at the communication bottleneck, data compression is widely used to solve the problem. Besides, the usage of variance reduction for achieving robustness and communication compression for reducing costs has been studied. The Byz-VR-MARINA pro- posed before uses random-sparsification. In this paper, we adopt the absolute compressors hard-threshold and propose a robust compressed framework Byz-VR-BARRY. Experimental results on w8a and a9a datasets have shown the effectiveness of our method, which can decrease the optimality gap obviously.
如今,随着联邦学习的普及,如何解决通信成本和模型鲁棒性等问题变得至关重要。而针对通信瓶颈,数据压缩被广泛应用于解决这一问题。此外,还研究了利用方差缩减来实现鲁棒性和利用通信压缩来降低成本。之前提出的Byz-VR-MARINA采用随机稀疏化。本文采用绝对压缩器硬阈值,提出了一种鲁棒压缩框架Byz-VR-BARRY。在w8a和a9a数据集上的实验结果表明了该方法的有效性,可以明显减小最优性差距。
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引用次数: 0
Privacy-Preserved Video Monitoring Method with 3D Human Pose Estimation 基于三维人体姿态估计的隐私视频监控方法
IF 2.4 3区 计算机科学 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2023-05-24 DOI: 10.1109/CSCWD57460.2023.10152735
Jifan Shen, Yuling Sun
With the fast growth of aging population and the spread of various chronic diseases such as heart disease and arthritis among older adults, elderly care has become an urgent topic facing today’s society. Consequently, technologies mediated remote care has become a widely-used method, with the significant promise of reducing cost and improving the efficiency and quality of healthcare. Yet, most remote-caring technologies, especially surveillance video based remote care, face the challenge of privacy issues. For addressing this issue, this paper proposes a privacy- preserved remote care method. Specially, we use ROMP to extract the 3D human model of the elderly in the surveillance video, and use KNN pose estimation algorithm to detect the potential abnormal behaviors. Compared to existing methods, which mainly replace the privacy information with totally different contents, our method not only protects the personal privacy information of the elderly, but also provides clear and identifiable posture information which could better support remote care.
随着老龄化人口的快速增长和老年人心脏病、关节炎等各种慢性疾病的蔓延,老年人护理已成为当今社会面临的紧迫课题。因此,技术介导的远程医疗已成为一种广泛使用的方法,具有降低成本,提高医疗效率和质量的重大承诺。然而,大多数远程护理技术,特别是基于监控视频的远程护理,都面临着隐私问题的挑战。针对这一问题,本文提出了一种隐私保护的远程护理方法。特别地,我们使用ROMP算法提取监控视频中老年人的三维人体模型,并使用KNN姿态估计算法检测潜在的异常行为。与现有的方法主要是用完全不同的内容替换隐私信息相比,我们的方法不仅保护了老年人的个人隐私信息,而且提供了清晰可识别的姿势信息,可以更好地支持远程护理。
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引用次数: 0
T-Sorokin: A General Mobility Model in Opportunistic Networks T-Sorokin:机会主义网络中的一般流动性模型
IF 2.4 3区 计算机科学 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2023-05-24 DOI: 10.1109/CSCWD57460.2023.10152854
Jinbin Tu, Qing Li, Yun Wang
The opportunistic networks are a kind of ad hoc networks that rely on the chance of nodes meeting to transmit messages. Acting as an effective supplement to 4G and 5G networks in some special scenarios where hardware devices are limited, the opportunistic networks have a significant application in health monitoring, warning broadcasting, disaster relief, and so on. The mobility model is one of the research focuses on the opportunistic networks. On the basis of the social mobility theory proposed by Sorokin, a general mobility model, which is suited for various scenarios, called T-Sorokin is proposed. This model is described as a seven-tuple and implemented on the Opportunistic Network Environment simulator and fits both Infocom06 and Rome taxi data set, which includes different areas ranging from hotel to city and different mobile units ranging from person to taxi. The results of experiments demonstrate that the T-Sorokin model has the advantage of generality, simplicity, and accuracy. It can simply establish movement tracks close to real data under different scenarios.
机会网络是一种依赖于节点相遇的机会来传输信息的自组织网络。机会网络在一些硬件设备受限的特殊场景下,作为4G和5G网络的有效补充,在健康监测、预警广播、救灾等方面有着重要的应用。流动性模型是机会主义网络研究的热点之一。在Sorokin提出的社会流动性理论的基础上,提出了一种适用于各种情景的一般流动性模型,称为T-Sorokin。该模型被描述为一个七元组,并在机会网络环境模拟器上实现,适合Infocom06和Rome出租车数据集,其中包括从酒店到城市的不同区域以及从人到出租车的不同移动单元。实验结果表明,T-Sorokin模型具有通用性、简便性和准确性等优点。它可以在不同场景下简单地建立接近真实数据的运动轨迹。
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引用次数: 1
Multi-Source Domain Transfer Learning on Epilepsy Diagnosis 多源领域迁移学习在癫痫诊断中的应用
IF 2.4 3区 计算机科学 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2023-05-24 DOI: 10.1109/CSCWD57460.2023.10152684
Aimei Dong, Zhiyun Qi, Yi Zhai, Guohua Lv
Epilepsy is a neurological disease that occurs in all ages and seriously threatens physical and mental health. There are two problems in the present study. One is the limitation of the amount of publicly available medical data. And the other is that the distributions of the data are different but correlated. Conventional machine learning methods are not applicable. But transfer learning method has shown promising performance in solving both problems. In this paper, a multi-source domain transfer learning method called MDTL for epilepsy diagnosis is proposed. In order to fully exploit the specific features and common features of the dataset, we propose a domain specific feature extractor and a common feature extractor. For enhancing data, we transform the signals into time-frequency diagrams to rotate and crop. The three types of electrocardiogram (ECG) time-frequency diagram are put to train model, and the model is transferred to electroencephalogram (EEG) time-frequency diagrams. The results confirm that MDTL is effective in epilepsy diagnosis.
癫痫是一种发生在所有年龄段的神经系统疾病,严重威胁身心健康。目前的研究存在两个问题。一个是公共医疗数据的数量有限。另一个是数据的分布是不同的,但是相关的。传统的机器学习方法不适用。而迁移学习方法在解决这两个问题上都表现出了良好的效果。本文提出了一种用于癫痫诊断的多源领域迁移学习方法MDTL。为了充分利用数据集的特定特征和公共特征,我们提出了一个领域特定特征提取器和一个公共特征提取器。为了增强数据,我们将信号转换成时频图进行旋转和裁剪。将三种类型的心电图时频图输入训练模型,并将训练模型转换为脑电图时频图。结果证实MDTL对癫痫的诊断是有效的。
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引用次数: 0
Privacy Protection Based on Packet Filtering for Home Internet-of-Things 基于包过滤的家庭物联网隐私保护
IF 2.4 3区 计算机科学 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS Pub Date : 2023-05-24 DOI: 10.1109/CSCWD57460.2023.10152725
Beibei Cheng, Yiming Zhu, Yuxuan Chen, Xiaodan Gu, Kai Dong
The development of home internet of things (H-IoT) devices brings convenience but poses significant privacy and security risks. Existing research minimizes data uploaded to the cloud but fails to process data locally, resulting in a trade-off between privacy and functionality. In this paper, we propose a privacy-preserving method that identifies and processes sensitive data sent from H-IoT devices at the edge side, ensuring functionality while preserving privacy. Our method applies different identification strategies to packets with different features, making it applicable to most H-IoT devices and scenarios. We validate our approach through experiments on a prototype system that monitors multiple cameras, demonstrating its effectiveness in preserving privacy while maintaining functionality.
家庭物联网(H-IoT)设备的发展带来了便利,但也带来了重大的隐私和安全风险。现有的研究尽量减少上传到云端的数据,但无法在本地处理数据,导致隐私和功能之间的权衡。在本文中,我们提出了一种隐私保护方法,该方法可以识别和处理从边缘端H-IoT设备发送的敏感数据,在保护隐私的同时确保功能。我们的方法对不同特征的数据包采用不同的识别策略,使其适用于大多数H-IoT设备和场景。我们通过在一个监控多个摄像头的原型系统上进行实验来验证我们的方法,证明了它在保持功能的同时保护隐私的有效性。
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引用次数: 0
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Computer Supported Cooperative Work-The Journal of Collaborative Computing
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