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2013 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2013)最新文献

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A new rumor propagation model and control strategy on social networks 社交网络上新的谣言传播模型及控制策略
Yuanyuan Bao, Chengqi Yi, Y. Xue, Yingfei Dong
In this paper, we propose a new SPNR model and identify the concrete propagation relationships and obtain the spreading threshold. We evaluate the proposed model with simulations and compare the simulation results with real data on Sina Weibo, the largest micro-blogging tool in China. The results show that the new model is effective for capturing the rumor spreading in real social networks. To obtain effective rumor control strategy, we further analyze the key factors that affect the maximum value of steady state, the point of decline, and the life cycle of a rumor. These results help us develop new rumor control strategies.
本文提出了一种新的SPNR模型,识别了具体的传播关系,得到了传播阈值。我们通过仿真对所提出的模型进行了评估,并将仿真结果与中国最大的微博工具新浪微博的真实数据进行了比较。结果表明,该模型能够有效地捕捉真实社交网络中的谣言传播。为了获得有效的谣言控制策略,我们进一步分析了影响谣言稳态最大值、下降点和生命周期的关键因素。这些结果有助于我们制定新的谣言控制策略。
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引用次数: 37
Deconstructing centrality: Thinking locally and ranking globally in networks 解构中心性:在网络中进行局部思考和全球排名
Sibel Adali, Xiaohui Lu, M. Magdon-Ismail
We examine whether the prominence of individuals in different social networks is determined by their position in their local network or by how the community to which they belong relates to other communities. To this end, we introduce two new measures of centrality, both based on communities in the network: local and community centrality. Community centrality is a novel concept that we introduce to describe how central one's community is within the whole network. We introduce an algorithm to estimate the distance between communities and use it to find the centrality of communities. Using data from several social networks, we show that community centrality is able to capture the importance of communities in the whole network. We then conduct a detailed study of different social networks and determine how various global measures of prominence relate to structural centrality measures.Our measures deconstruct global centrality along local and community dimensions. In some cases, prominence is determined almost exclusively by local information, while in others a mix of local and community centrality matters. Our methodology is a step toward understanding of the processes that contribute to an actor's prominence in a network.
我们研究了个人在不同社会网络中的突出地位是由他们在当地网络中的地位决定的,还是由他们所属的社区与其他社区的关系决定的。为此,我们引入了两种新的中心性度量方法,它们都基于网络中的社区:本地中心性和社区中心性。社区中心性是我们引入的一个新概念,用来描述一个人的社区在整个网络中的中心地位。我们引入了一种算法来估计群落之间的距离,并用它来寻找群落的中心性。使用来自几个社交网络的数据,我们表明社区中心性能够捕捉社区在整个网络中的重要性。然后,我们对不同的社会网络进行了详细的研究,并确定了各种突出的全球措施与结构中心性措施之间的关系。我们的措施沿着地方和社区维度解构全球中心性。在某些情况下,突出程度几乎完全取决于当地的信息,而在另一些情况下,地方和社区的中心地位很重要。我们的方法是朝着理解导致演员在网络中突出地位的过程迈出的一步。
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引用次数: 5
Active learning and inference method for within network classification 网络内分类的主动学习与推理方法
Tomasz Kajdanowicz, Radosław Michalski, Katarzyna Musial, Przemyslaw Kazienko
In relational learning tasks such as within network classification the main problem arises from the inference of nodes' labels based on the the ground true labels of remaining nodes. The problem becomes even harder if the nodes from initial network do not have any labels assigned and they have to be acquired. However, labels of which nodes should be obtained in order to provide fair classification results? Active learning and inference is a practical framework to study this problem. The method for active learning and inference in within network classification based on node selection is proposed in the paper. Based on the structure of the network it is calculated the utility score for each node, the ranking is formulated and for selected nodes the labels are acquired. The paper examines several distinct proposals for utility scores and selection methods reporting their impact on collective classification results performed on various real-world networks.
在网络分类等关系学习任务中,主要问题是基于剩余节点的真实标签来推断节点的标签。如果初始网络中的节点没有分配任何标签,则需要获取标签,则问题变得更加困难。但是,为了提供公平的分类结果,应该获取哪些节点的标签呢?主动学习与推理是研究这一问题的实用框架。提出了一种基于节点选择的网络内分类主动学习与推理方法。根据网络的结构计算每个节点的效用得分,制定排名,并为选定的节点获取标签。本文研究了几种不同的效用分数和选择方法的建议,报告了它们对在各种现实世界网络上执行的集体分类结果的影响。
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引用次数: 2
Enriching employee ontology for enterprises with knowledge discovery from social networks 利用社交网络中的知识发现丰富企业员工本体
Hao Wu, C. Chelmis, V. Sorathia, Yinuo Zhang, O. Patri, V. Prasanna
To enhance human resource management and personalized information acquisition, employee ontology is used to model business concepts and relations between them for enterprises. In this paper, we propose an employee ontology that integrates user static properties from formal structures with dynamic interests and expertise extracted from informal communication signals. We mine user's interests at both personal and professional level from informal interactions on communication platforms at the workplace. We show how complex semantic queries enable granular analysis. At the microscopic level, enterprises can utilize the results to better understand how their employees work together to complete tasks or produce innovative ideas, identify experts and influential individuals. At the macroscopic level, conclusions can be drawn, among others, about collective behavior and expertise in varying granularities (i.e. single employee to the company as a whole).
为了加强人力资源管理和个性化信息获取,利用员工本体对企业的业务概念及其之间的关系进行建模。在本文中,我们提出了一种员工本体,该本体将来自正式结构的用户静态属性与从非正式通信信号中提取的动态兴趣和专业知识相结合。我们从工作场所交流平台上的非正式互动中挖掘用户在个人和专业层面的兴趣。我们将展示复杂的语义查询如何支持粒度分析。在微观层面上,企业可以利用这些结果更好地了解员工如何共同完成任务或产生创新想法,识别专家和有影响力的个人。在宏观层面上,可以得出结论,其中包括不同粒度的集体行为和专业知识(即单个员工到整个公司)。
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引用次数: 5
Hierarchical influence maximization for advertising in multi-agent markets 多代理市场中广告的层级影响最大化
M. Maghami, G. Sukthankar
Maximizing product adoption within a customer social network under a constrained advertising budget is an important special case of the general influence maximization problem. Specialized optimization techniques that account for product correlations and community effects can outperform network-based techniques that do not model interactions that arise from marketing multiple products to the same consumer base. However, it can be infeasible to use exact optimization methods that utilize expensive matrix operations on larger networks without parallel computation techniques. In this paper, we present a hierarchical influence maximization approach for product marketing that constructs an abstraction hierarchy for scaling optimization techniques to larger networks. An exact solution is computed on smaller partitions of the network, and a candidate set of influential nodes is propagated upward to an abstract representation of the original network that maintains distance information. This process of abstraction, solution, and propagation is repeated until the resulting abstract network is small enough to be solved exactly. Our proposed method scales to much larger networks and outperforms other influence maximization techniques on marketing products.
在有限的广告预算下,在客户社交网络中最大化产品采用率是一般影响最大化问题的一个重要特例。考虑到产品相关性和社区效应的专业优化技术可以优于基于网络的技术,这些技术不能模拟因向同一消费者群体销售多种产品而产生的相互作用。然而,在没有并行计算技术的情况下,在大型网络上使用昂贵的矩阵运算的精确优化方法是不可行的。在本文中,我们提出了一种产品营销的分层影响最大化方法,该方法为将优化技术扩展到更大的网络构建了一个抽象层次。在网络的较小分区上计算精确解,并将影响节点的候选集向上传播到维护距离信息的原始网络的抽象表示。这个抽象、求解和传播的过程不断重复,直到得到的抽象网络足够小,可以精确地求解。我们提出的方法适用于更大的网络,在营销产品方面优于其他影响力最大化技术。
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引用次数: 8
The forecast for electronic health record access: Partly cloudy 电子健康记录访问预报:部分多云
Brian Coats, Subrata Acharya
The mounting pressure to enable widespread access to electronic health record systems is being felt by healthcare providers. The federal government's Meaningful Use incentives are reason alone for providers to address this significant usability issue. As the healthcare industry considers solutions, attention should be given to the Cloud and the considerable investment that has been made related to the establishment of digital identities and making them interoperable across heterogeneous systems. This research considered how the Cloud could be leveraged by healthcare providers to not only provide patients with a familiar way of accessing electronic resources but also creating a significant cost savings for providers. An examination was performed of similar work being done in other industries as well as the standards laid out by the federal government for EHRs and digital identities. This research lays out a comprehensive framework for healthcare providers to easily follow to integrate with the Cloud for identity validation, while meeting compliance guidelines for security and privacy. To demonstrate the viability of this research, a number of pilots and proof of concept projects have already been implemented at a large regional hospital and have produced immediate and tangible improvements.
医疗保健提供者已经感受到广泛使用电子健康记录系统的压力越来越大。联邦政府的“有意义的使用”激励措施是供应商解决这一重大可用性问题的唯一理由。在医疗保健行业考虑解决方案时,应该关注云和与建立数字身份并使其在异构系统之间可互操作相关的大量投资。这项研究考虑了医疗保健提供商如何利用云,不仅为患者提供一种熟悉的访问电子资源的方式,而且还为提供商节省了大量成本。对其他行业正在进行的类似工作以及联邦政府为电子病历和数字身份制定的标准进行了检查。这项研究为医疗保健提供商提供了一个全面的框架,可以轻松地与云集成以进行身份验证,同时满足安全性和隐私性的合规性指导方针。为了证明这项研究的可行性,已经在一家大型区域医院实施了一些试点和概念验证项目,并产生了直接和切实的改进。
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引用次数: 3
Improving the language of influence 提高语言的影响力
D. Skillicorn, C. Leuprecht
We show that the language used by U.S. presidential candidates over the past twenty years has an underlying temporal structure associated with electoral success, with the most influential language used by incumbents in their second campaign and the least by losers in a first-cycle open campaign. Influential language is characterized by increased positivity, complete absence of negativity, increased abstraction, and lack of reference to the opposing candidate(s). The way in which language use changes suggests that it is the result of changing self-perception rather than a deliberate strategy. This has implications for the language of influence as deployed by violent extremist groups, suggesting that both success at convincing an audience to participate in violent extremism and the presence of competing groups trying to make similar arguments improve the quality of the influencing language they use.
我们发现,在过去二十年中,美国总统候选人使用的语言具有与选举成功相关的潜在时间结构,在任者在第二次竞选中使用的语言最有影响力,而失败者在第一轮公开竞选中使用的语言最少。有影响力的语言的特点是增加积极性,完全没有消极性,增加抽象,缺乏对对方候选人的参考。语言使用的变化方式表明,这是自我认知变化的结果,而不是一种深思熟虑的策略。这对暴力极端主义团体使用的影响力语言有影响,这表明,成功说服受众参与暴力极端主义,以及试图提出类似论点的竞争团体的存在,都会提高他们使用的影响力语言的质量。
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引用次数: 2
Information propagation in microblog networks 微博网络中的信息传播
Chenyi Zhang, Jianling Sun, Ke Wang
Information propagation in a microblog network aims to identify a set of seed users for propagating a target message to as many interested users as possible. This problem differs from the traditional influence maximization in two major ways: it has a content-rich target message for propagation and it treats each link in the network as communication on certain topics and emphasizes the topic relevance of such communication in propagating the target message. In realistic situations, however, the topics associated with a link are not explicitly expressed but are hidden in the microblogs previously exchanged through the link. In this paper, we present a topic-aware solution to information propagation in a microblog network. We first model the latent topic structure of the network using observed microblog messages published in the network. We then present two methods for estimating the propagation probability based on the topic relevance between a link and the target message. Once the propagation probability is estimated, we adopt the standard greedy algorithm for influence maximization to find seed users. This approach is topic-aware in that the target message finds its way of propagation according to its topic relevance to the latent topic structure in the network. Experiments conducted on real Twitter datasets suggest that the proposed methods are able to select right seed users.
微博网络中的信息传播旨在识别一组种子用户,将目标信息传播给尽可能多的感兴趣的用户。该问题与传统的影响力最大化有两个主要的区别:具有内容丰富的目标消息进行传播,将网络中的每一个环节都视为某一主题的传播,并强调该传播在传播目标消息时的主题相关性。然而,在现实情况下,与链接相关的主题并没有显式表达,而是隐藏在之前通过该链接交换的微博中。本文提出了一种微博网络信息传播的主题感知解决方案。我们首先利用观察到的微博消息对网络的潜在主题结构进行建模。然后,我们提出了两种基于链接和目标消息之间的主题相关性来估计传播概率的方法。在估计传播概率后,采用影响最大化的标准贪婪算法寻找种子用户。这种方法是主题感知的,即目标消息根据其与网络中潜在主题结构的主题相关性找到其传播方式。在真实Twitter数据集上进行的实验表明,所提出的方法能够选择正确的种子用户。
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引用次数: 19
Howcare: A personal health cloud archive and care-partners' community Howcare:个人健康云档案和护理伙伴社区
Liang-Cheng Huang, Wei-Chung Liu, S. Chou
Nowadays, most people care about their personal health, no matter mental or physical health in their daily life. They sustain and improve their health status with exercise, diet control, adopt good sleep habit, keep natural patterns on sleeping and bowel movement. These people need a tool for monitor and record long-termly their own health status. On the other hand, some people do not see they need to change their health related lifestyle to improve their health status until they are diagnosed with diseases. While he/she is sick, he/she also need to write down their health diary he/herself or the caregiver (most of them are the disadvantaged in their family) for the physician to monitor the illness. In this paper we proposed a social network service named HowCare, a caregiver based social support online community, with a personal health cloud archive and its unique designs with “HealthRank” algorithm to match caregiver's social network with correlated illness situation they face to. The aim of HowCare are, to help people keep their own health data on the cloud and allows patients or caregiver with the same disease to interact with each other, and through the social network and telehealth design, it will influence the patient's willingness to accept healthier life and improve health status.
如今,大多数人在日常生活中都很关心自己的个人健康,无论是心理健康还是身体健康。他们通过运动、控制饮食、养成良好的睡眠习惯、保持自然的睡眠和排便模式来维持和改善自己的健康状况。这些人需要一种工具来长期监测和记录他们自己的健康状况。另一方面,有些人直到被诊断出患有疾病时才意识到他们需要改变与健康相关的生活方式来改善他们的健康状况。当他/她生病时,他/她也需要写下自己的健康日记,他/她或照顾者(他们大多数是家庭中的弱势群体),以便医生监测病情。本文提出了一种基于照顾者的社交支持在线社区——HowCare社交网络服务,该服务采用个人健康云档案,其独特的设计采用“HealthRank”算法,将照顾者的社交网络与他们所面临的相关疾病情况进行匹配。HowCare的目标是,帮助人们将自己的健康数据保存在云端,让患有相同疾病的患者或护理人员相互互动,并通过社交网络和远程医疗设计,影响患者接受更健康生活的意愿,改善健康状况。
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引用次数: 2
The influence of feedback with different opinions on continued user participation in online newsgroups 不同意见的反馈对用户持续参与在线新闻组的影响
Teng Wang, Keith C. Wang, Fredrik Erlandsson, S. F. Wu, Robert W. Faris
With the popularity of social media in recent years, it has been a critical topic for social network designer to understand the factors that influence continued user participation in online newsgroups. Our study examines how feedback with different opinions is associated with participants' lifetime in online newsgroups. Firstly, we propose a new method of classifying different opinions among user interaction contents. Generally, we leverage user behavior information in online newsgroups to estimate their opinions and evaluate our classification results based on linguistic features. In addition, we also implement this opinion classification method into our SINCERE system as a real-time service. Based on this opinion classification tool, we use survival analysis to examine how others' feedback with different opinions influence continued participation. In our experiment, we analyze more than 88,770 interactions on the official Occupy LA Facebook page. Our final result shows that not only the feedback with the same opinions as the user, but also the feedback with different opinions can motivate continued user participation in online newsgroup. Furthermore, an interaction of feedback with both the same and different opinions can boost user continued participation to the greatest extent. This finding forms the basis of understanding how to improve online service in social media.
随着近年来社交媒体的普及,了解影响用户持续参与在线新闻组的因素已成为社交网络设计者的一个重要课题。我们的研究考察了不同意见的反馈与在线新闻组参与者的寿命之间的关系。首先,我们提出了一种对用户交互内容中不同意见进行分类的新方法。通常,我们利用在线新闻组中的用户行为信息来估计他们的意见,并基于语言特征评估我们的分类结果。此外,我们还将这种意见分类方法作为实时服务,落实到我们的诚信系统中。基于这个意见分类工具,我们使用生存分析来检验其他人的不同意见反馈如何影响持续参与。在我们的实验中,我们分析了占领洛杉矶官方Facebook页面上超过88,770个互动。我们的最终结果表明,无论是与用户意见一致的反馈,还是与用户意见不同的反馈,都能激发用户在网络新闻组中的持续参与。此外,相同意见和不同意见的反馈互动可以最大程度地促进用户的持续参与。这一发现为理解如何改善社交媒体的在线服务奠定了基础。
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引用次数: 8
期刊
2013 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM 2013)
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