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Hairball Buster: A Graph Triage Method for Viewing and Comparing Graphs 毛球终结者:查看和比较图形的图形分类方法
Pub Date : 2019-01-01 DOI: 10.21307/connections-2019-009
Patrick D. Allen, Mark Alan Matties, Elisha Peterson
Abstract Hairball buster (HB) (also called node-neighbor centrality or NNC) is an approach to graph analytic triage that uses simple calculations and visualization to quickly understand and compare graphs. Rather than displaying highly interconnected graphs as ‘hairballs’ that are difficult to understand, HB provides a simple standard visual representation of a graph and its metrics, combining a monotonically decreasing curve of node metrics with indicators of each node’s neighbors’ metrics. The HB visual is canonical, in the sense that it provides a standard output for each node-link graph. It helps analysts quickly identify areas for further investigation, and also allows for easy comparison between graphs of different data sets. The calculations required for creating an HB display is order M plus N log N, where N is the number of nodes and M is the number of edges. This paper includes examples of the HB approach applied to four real-world data sets. It also compares HB to similar visual approaches such as degree histograms, adjacency matrices, blockmodeling, and force-based layout techniques. HB presents greater information density than other algorithms at lower or equal calculation cost, efficiently presenting information in a single display that is not available in any other single display.
摘要Hairball buster(HB)(也称为节点邻居中心性或NNC)是一种图形分析分类方法,它使用简单的计算和可视化来快速理解和比较图形。HB没有将高度互连的图显示为难以理解的“发球”,而是提供了图及其度量的简单标准视觉表示,将节点度量的单调递减曲线与每个节点的邻居度量的指示符相结合。HB可视化是规范的,因为它为每个节点链接图提供了标准输出。它可以帮助分析师快速确定需要进一步调查的领域,还可以方便地比较不同数据集的图表。创建HB显示所需的计算是顺序M加N log N,其中N是节点数,M是边数。本文包括应用于四个真实世界数据集的HB方法的示例。它还将HB与类似的视觉方法进行了比较,如度直方图、邻接矩阵、块建模和基于力的布局技术。HB以更低或相等的计算成本呈现出比其他算法更大的信息密度,在任何其他单个显示器中都不可用的单个显示器中有效地呈现信息。
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引用次数: 1
Mapping Gray Maritime Networks 绘制灰色海事网络
Pub Date : 2019-01-01 DOI: 10.21307/connections-2019-006
W. Porter, R. Schroeder, C. Callaghan, Albert Barreto, Sam Bussell, B. Young, M. Loewer, D. Funk, Janet von Eiff
Abstract This research focused on the identification and tracking of subgroups of vessels of interest, owners, operators, ports, cargoes, and specific activities associated with artificial reef enhancement and construction in the South China Sea. Historical automated information system (AIS) tracks and current maritime databases were used to develop sociogram depictions of the gray (licit but only partially transparent) maritime network that connects these nodes (ships, events, organizations, ports, activities). Social network matrices were dynamically updated by open source databases to provide insights into real-time awareness and tracking for operational purposes. The maritime network data set was populated by, and dynamically updated through, the integration of unclassified data using algorithms developed as part of the research. Longitudinal topographic metrics  –  average degree, average clustering coefficient, and centralization  –  were used to analyze the multi-mode (e.g., ship to ship, ship to owners/operators, owner/operators to owner/operators, ships to locations) relationships within the gray maritime network. Additionally, the network of ports and reefs in the area of operations was mapped and insights were gained by leveraging directed centrality measures  –  hubs and authorities  –  connecting them.
摘要本研究的重点是识别和跟踪南海与人工礁增强和建设相关的利益船只、船东、运营商、港口、货物和具体活动的子群。历史自动信息系统(AIS)轨迹和当前海事数据库被用于开发灰色(合法但仅部分透明)海事网络的社会图描述,该网络连接这些节点(船舶、事件、组织、港口、活动)。社会网络矩阵由开源数据库动态更新,为操作目的提供实时感知和跟踪的见解。海事网络数据集由使用作为研究的一部分开发的算法集成的未分类数据填充并动态更新。纵向地形指标——平均度、平均聚类系数和集中化——用于分析灰色海事网络中的多模式(例如,船到船、船到船东/运营商、船东/运营商到船东/运营商、船到地点)关系。此外,还绘制了作业区域的港口和珊瑚礁网络,并通过利用直接中心性措施(枢纽和当局)将它们连接起来,获得了见解。
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引用次数: 0
What the eye does not see: visualizations strategies for the data collection of personal networks 眼睛看不到的东西:个人网络数据收集的可视化策略
Pub Date : 2019-01-01 DOI: 10.21307/CONNECTIONS-2019-003
I. Maya-Jariego, Romina Cachia
Abstract The graphic representation of relational data is one of the central elements of social network analysis. In this paper, the author describe the use of visualization in interview-based data collection procedures designed to obtain personal networks information, exploring four main contributions. First, the author shows a procedure by which the visualization is integrated with traditional name generators to facilitate obtaining information and reducing the burden of the interview process. Second, the author describes the reactions and qualitative interpretation of the interviewees when they are presented with an analytical visualization of their personal network. The most frequent strategies consist in identifying the key individuals, dividing the personal network in groups and classifying alters in concentric circles of relative importance. Next, the author explores how the visualization of groups in personal networks facilitates the enumeration of the communities in which individuals participate. This allows the author to reflect on the role of social circles in determining the structure of personal networks. Finally, the author compares the graphic representation obtained through spontaneous, hand-drawn sociograms with the analytical visualizations elicited through software tools. This allows the author to demonstrate that analytical procedures reveal aspects of the structure of personal networks that respondents are not aware of, as well as the advantages and disadvantages of using both modes of data collection. For this, the author presents findings from a study of highly skilled migrants living in Spain (n = 95) through which the author illustrates the challenges, in terms of data reliability, validity and burden on both the researcher and the participants.
关系数据的图形表示是社会网络分析的核心元素之一。在本文中,作者描述了在基于访谈的数据收集程序中使用可视化来获取个人网络信息,探讨了四个主要贡献。首先,作者展示了一个程序,通过该程序,可视化与传统的姓名生成器相集成,以便于获取信息并减轻面试过程的负担。其次,作者描述了受访者在个人网络分析可视化时的反应和定性解释。最常见的策略包括识别关键个人,将个人网络分组,并将变化分类为相对重要的同心圆。接下来,作者探讨了个人网络中群体的可视化如何促进个人参与的社区的列举。这使作者能够反思社交圈在决定个人网络结构中的作用。最后,作者将通过自发的手绘社会图获得的图形表示与通过软件工具获得的分析可视化进行了比较。这使作者能够证明,分析程序揭示了受访者不知道的个人网络结构的各个方面,以及使用这两种数据收集模式的优缺点。为此,作者介绍了一项针对居住在西班牙的高技能移民(n=95)的研究结果,通过该研究,作者阐述了研究人员和参与者在数据可靠性、有效性和负担方面面临的挑战。
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引用次数: 8
Signed Networks for the US Supreme Court Overturning its Prior Decisions 美国最高法院推翻其先前裁决的签名网络
Pub Date : 2019-01-01 DOI: 10.21307/connections-2019-002
P. Doreian, Andrej Mrvar
Abstract This paper introduces the idea of studying the decision citation network of the US Supreme Court in a new fashion by focusing on this Court’s overturning of some of its prior decisions. Two departures from current practices were developed. One was to consider the phenomenon of overturning in a broader network context. The second was to treat the citations between overturning decisions and the overturned decisions as negative ties. This led to the creation of multiple signed citation networks. These networks were studied to get a better understanding of the operation of this Court. The results show that, frequently, when decisions are overturned, this is not done in a logically consistent fashion. A research agenda is proposed regarding a reexamination of stare decesis, thought to be a bedrock of the US legal system, and calling it into question as a genuine operating legal principle.
摘要本文介绍了以一种新的方式研究美国最高法院裁决引用网络的想法,重点是该法院推翻了其先前的一些裁决。与现行做法有两个不同之处。一个是在更广泛的网络背景下考虑颠覆现象。第二种是将推翻决定和被推翻决定之间的引用视为负面联系。这导致了多个签名引文网络的创建。对这些网络进行了研究,以更好地了解本法院的运作情况。结果表明,当决策被推翻时,通常不会以逻辑一致的方式进行。提出了一项关于重新审查凝视欺骗的研究议程,凝视欺骗被认为是美国法律体系的基石,并对其作为一项真正的运作法律原则提出了质疑。
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引用次数: 2
Academic Collaboration via Resource Contributions: An Egocentric Dataset 通过资源贡献的学术合作:一个以自我为中心的数据集
Pub Date : 2019-01-01 DOI: 10.21307/connections-2019-010
M. Bojanowski, Dominika Czerniawska, Wojciech Fenrich
Abstract In order to understand scientists’ incentives to form collaborative relations, we have conducted a study looking into academically relevant resources, which scientists contribute into collaborations with others. The data we describe in this paper are an egocentric dataset assembled by coding originally qualitative material. It is 40 multiplex ego networks containing data on individual attributes (such as gender, scientific degree), collaboration ties (including alter–alter ties), and resource flows. Resources are coded using a developed inventory of 25 types of academically relevant resources egos and alters contribute into their collaborations. We share the data with the research community with the hopes of enriching knowledge and tools for studying sociological and behavioral aspects of science as a social process.
为了了解科学家形成合作关系的动机,我们进行了一项研究,研究了科学家在与他人合作时贡献的学术相关资源。本文描述的数据是一个以自我为中心的数据集,由原始定性材料编码而成。它是40个多重自我网络,包含个人属性(如性别、科学程度)、协作关系(包括alter-alter关系)和资源流动的数据。资源编码使用25种学术相关资源的开发清单,自我和改变为他们的合作做出贡献。我们与研究界分享数据,希望丰富知识和工具,以研究作为社会过程的科学的社会学和行为学方面。
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引用次数: 0
Linton C. Freeman Interview by Katherine Faust, July 27, 2018 2018年7月27日,凯瑟琳·福斯特采访林顿·c·弗里曼
Pub Date : 2019-01-01 DOI: 10.21307/connections-2019-004
Katherine Faust
Abstract At the business meeting of the International Network for Social Network Analysis (INSNA) in June 2018, there was great enthusiasm for conducting and archiving interviews with luminaries in the field. Lin Freeman’s name was mentioned, and I was drafted to conduct the interview. This is an edited transcript of the interview that I conducted with Lin on July 27, 2018. Lin passed away three weeks later, on August 17, 2018. He was 91 years old.
摘要在2018年6月的国际社交网络分析网络(INSNA)商业会议上,人们对该领域名人的采访进行了热烈的讨论并存档。林弗里曼的名字被提到了,我被选中主持这次采访。这是我在2018年7月27日对林进行的一次采访的编辑记录。三周后,林于2018年8月17日去世。他91岁了。
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引用次数: 0
A Visual Data Collection Method: German Local Parties and Associations 可视化数据收集方法:德国地方政党和协会
Pub Date : 2018-06-04 DOI: 10.21307/CONNECTIONS-2017-003
I. Borucki
Abstract This research captures local networks of German political parties and welfare agencies in regards to poverty. The article explores whether there are differences in regards to homophily and brokerage between the two studied groups using a dataset of 33 egonetworks in two German cities. The computer assisted drawn networks were collected in an interactive participative way together with the interviewed egonetworks. To achieve the theoretical aim of analysing homophily and brokerage between politicians and welfare workers, two hypotheses are examined, resting upon social capital theory. The hypotheses were quantified and explicated with different variables. The first hypothesis states that heterophile networks imply more social capital, which referred to different measurements (size, density, homophily). This could be partially validated since the analysed networks of association representatives (n=12) were denser and slightly more heterophile than those of party representatives (n=21). Second, it was assumed that politicians, because of their function as elected representatives, would be more likely to take on an interface function within the communities than representatives of civil society institutions. Results based on calculated EI-indices, subgraphs and brokerage show that party representatives do indeed have larger networks, but these networks split into fewer subgraphs than association representatives’ networks.
摘要:本研究捕获了德国政党和福利机构在贫困方面的地方网络。本文探讨是否有关于同质性和经纪之间的两个研究组使用的数据集33个自我网络在两个德国城市的差异。计算机辅助绘制的网络与访谈的自我网络以互动参与的方式收集。为了达到分析政治家和福利工作者之间的同质性和中介性的理论目的,本文在社会资本理论的基础上检验了两个假设。用不同的变量对假设进行量化和解释。第一个假设认为,异性恋网络意味着更多的社会资本,这涉及到不同的衡量标准(大小、密度、同质性)。这可以部分地验证,因为所分析的协会代表(n=12)的网络比政党代表(n=21)的网络更密集,更倾向于异性恋。其次,人们认为,由于政治家作为民选代表的职能,他们比民间社会机构的代表更有可能在社区内承担界面功能。基于计算的ei指数、子图和中介的结果表明,政党代表确实拥有更大的网络,但这些网络比协会代表的网络分裂成更少的子图。
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引用次数: 0
The Boston Special Youth Project Affiliation Dataset 波士顿特殊青年项目附属数据集
Pub Date : 2018-06-04 DOI: 10.21307/CONNECTIONS-2017-006
Jacob T. N. Young, Scott H. Decker, Gary Sweeten
Abstract The Boston Special Youth Project (SYP) Affiliation dataset is a large, bipartite network representing interactions among 166 gang members from seven gangs for nearly three years. The project was conducted from June 1954 to May 1957 and represents one of the most elaborate gang intervention programs ever conducted. The SYP was a “detached-worker program,” where an adult (typically a graduate student from one of the surrounding universities) was assigned to an area (local parks, housing projects) to establish and maintain contact with and attempt to change the behaviors of the gangs. These workers collected detailed field notes (“contact cards”) documenting the activities of study gang members. However, the social network data collected on the contact cards were never analyzed by SYP staff. After the death of the project leader, Walter Miller, in 2004, the materials from the project became available to a team of researchers (faculty, graduate, and undergraduate students) in the School of Criminology and Criminal Justice at Arizona State University. These researchers electronically scanned and digitized the contact cards, and began the process of creating a network from the cards. From these cards, a bipartite network was created where 166 individuals (i.e. gang members) were connected to 33,653 events (i.e. contact cards).
摘要波士顿特殊青年项目(SYP)隶属关系数据集是一个大型的二分网络,代表了近三年来来自七个帮派的166名帮派成员之间的互动。该项目于1954年6月至1957年5月进行,是有史以来最精细的帮派干预项目之一。SYP是一个“独立工作者计划”,一名成年人(通常是周围大学的研究生)被分配到一个地区(当地公园、住房项目),与帮派建立和保持联系,并试图改变帮派的行为。这些工作人员收集了详细的现场记录(“联系卡”),记录了学习团伙成员的活动。然而,SYP的工作人员从未对联系人卡上收集的社交网络数据进行过分析。2004年,项目负责人沃尔特·米勒去世后,亚利桑那州立大学犯罪学和刑事司法学院的一组研究人员(教员、研究生和本科生)可以获得该项目的材料。这些研究人员对名片进行了电子扫描和数字化,并开始从名片中创建网络。根据这些卡片,创建了一个二部分网络,其中166人(即帮派成员)与33653个事件(即联系卡)相连。
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引用次数: 1
Are We in Agreement? Benchmarking and Reliability Issues between Social Network Analytic Programs 我们意见一致吗?社会网络分析程序之间的基准和可靠性问题
Pub Date : 2018-06-04 DOI: 10.21307/CONNECTIONS-2017-002
P. Murphy, K. Cuenco, Yufei Wang
Abstract Reliability and validity are key concerns for any researcher. We investigate these concerns as they apply to social network analysis programs. Six well-used and trusted programs were compared on four common centrality measures (degree, betweenness, closeness, and eigenvector) under a variety of network topographies. We identify notable inconsistencies between programs that may not be apparent to the average user of these programs. Specifically, each program may have implemented a variant of a given measure without informing the user of its characteristics. This presents an unnecessary obfuscation for analysts seeking measures that are best suited to the idiosyncrasies of their data, and for those comparing results between programs. Under such a paradigm, the terms in use within the social network analysis community become less precise over time and diverge from the original strength of network analysis: clarity.
摘要可靠性和有效性是任何研究者关注的关键问题。我们调查了这些问题,因为它们适用于社交网络分析程序。在各种网络拓扑下,对六个使用良好且值得信赖的程序在四个常见的中心性度量(度、介数、贴近度和特征向量)上进行了比较。我们发现程序之间存在明显的不一致,这些不一致对这些程序的普通用户来说可能并不明显。具体而言,每个程序可能已经实现了给定措施的变体,而没有通知用户其特征。对于寻求最适合其数据特性的措施的分析师,以及那些在程序之间比较结果的分析师来说,这是一种不必要的混淆。在这样的范式下,随着时间的推移,社交网络分析社区中使用的术语变得不那么精确,并偏离了网络分析的原始优势:清晰度。
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引用次数: 0
Strategic and Genetic Networking: Relational Endowment in a Local Cultural Offer 战略和遗传网络:地方文化提供中的关系禀赋
Pub Date : 2018-06-04 DOI: 10.21307/CONNECTIONS-2017-005
A. Gallelli
Abstract The local theatrical offer is the result of all the theatre companies which perform shows in each other’s venues. Theatre hospitality is an inherently relational phenomenon, and besides big national and international tours, it is an important part of the local cultural landscape. Aiming at contributing to the literature on network analysis applied to the inquiry on culture, the research adopts the network perspective to test hypotheses on companies’ relational behaviors and mechanisms of network formation in a local context in Italy. The analyses show that companies which get more public funding tend to host more; there is a homophily effect based on audience levels; companies tend to reciprocate hospitality relations and form clusters of close collaborations.
摘要当地剧院的报价是所有在彼此的场地演出的剧院公司的结果。剧院招待是一种内在的关系现象,除了大型的国内和国际巡演之外,它也是当地文化景观的重要组成部分。本研究旨在为网络分析应用于文化探究的文献做出贡献,采用网络视角在意大利本土背景下检验关于公司关系行为和网络形成机制的假设。分析表明,获得更多公共资金的公司往往会举办更多的活动;存在基于受众水平的同质性效应;公司倾向于回报热情好客的关系,并形成紧密合作的集群。
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引用次数: 0
期刊
Connections (Toronto, Ont.)
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