Social Networks最新文献_第10页

The interplay of structural features and observed dissimilarities among centrality indices 结构特征的相互作用和观察到的中心性指数之间的差异

IF 3.1 2区社会学

Social Networks Pub Date : 2023-12-06 DOI: 10.1016/j.socnet.2023.11.006

David Schoch , Termeh Shafie

引用次数: 0

Bayesian testing of scientific expectations under exponential random graph models 指数随机图模型下科学期望的贝叶斯检验

IF 3.1 2区社会学

Social Networks Pub Date : 2023-12-02 DOI: 10.1016/j.socnet.2023.11.004

Joris Mulder , Nial Friel , Philip Leifeld

{"title":"Bayesian testing of scientific expectations under exponential random graph models","authors":"Joris Mulder , Nial Friel , Philip Leifeld","doi":"10.1016/j.socnet.2023.11.004","DOIUrl":"https://doi.org/10.1016/j.socnet.2023.11.004","url":null,"abstract":"<div><p>The exponential random graph (ERGM) model is a commonly used statistical framework for studying the determinants of tie formations from social network data. To test scientific theories under ERGMs, statistical inferential techniques are generally used based on traditional significance testing using <span><math><mi>p</mi></math></span>-values. This methodology has certain limitations, however, such as its inconsistent behavior when the null hypothesis is true, its inability to quantify evidence in favor of a null hypothesis, and its inability to test multiple hypotheses with competing equality and/or order constraints on the parameters of interest in a direct manner. To tackle these shortcomings, this paper presents Bayes factors and posterior probabilities for testing scientific expectations under a Bayesian framework. The methodology is implemented in the R package <span>BFpack</span>. The applicability of the methodology is illustrated using empirical collaboration networks and policy networks.</p></div>","PeriodicalId":48353,"journal":{"name":"Social Networks","volume":"78 ","pages":"Pages 40-53"},"PeriodicalIF":3.1,"publicationDate":"2023-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0378873323000801/pdfft?md5=b9fd7b88bb54b79a8611ec298aeb893c&pid=1-s2.0-S0378873323000801-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138474171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Network ecology: Tie fitness in social context(s) 网络生态学：社会背景下的纽带适应性

IF 3.1 2区社会学

Social Networks Pub Date : 2023-12-01 DOI: 10.1016/j.socnet.2023.11.002

Malte Doehne , Daniel A. McFarland , James Moody

{"title":"Network ecology: Tie fitness in social context(s)","authors":"Malte Doehne , Daniel A. McFarland , James Moody","doi":"10.1016/j.socnet.2023.11.002","DOIUrl":"https://doi.org/10.1016/j.socnet.2023.11.002","url":null,"abstract":"<div><p>Social relations are embedded in material, cultural, and institutional settings that affect network dynamics and the resulting topologies. For example, romantic entanglements are subject to social and cultural norms, interfirm alliances are constrained by country-specific legislation, and adolescent friendships are conditioned by classroom settings and neighborhood effects. In short, social contexts shape social relations and the networks they give rise to. However, how and when they do so remain to be established. This paper presents network ecology as a general framework for identifying how the proximal environment shapes social networks by focusing interactions and social relations, and how these interactions and relations in turn shape the environment in which social networks form. Tie fitness is introduced as a metric that quantifies how well particular dyadic social relations would align with the setting. Using longitudinal networks collected on two cohorts each in 18 North American schools, i.e., 36 settings, we develop five generalizable observations about the time-varying fitness of adolescent friendship. Across all 252 analyzed networks, tie fitness predicted new tie formation, tie longevity, and tie survival. Dormant fit ties cluster in relational niches, thereby establishing a resource base for social identities competing for increased representation in the relational system.</p></div>","PeriodicalId":48353,"journal":{"name":"Social Networks","volume":"77 ","pages":"Pages 180-196"},"PeriodicalIF":3.1,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0378873323000783/pdfft?md5=14329d38d40011e405351d60c5b18d0c&pid=1-s2.0-S0378873323000783-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139744057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Homophily and the evolution of cooperation in the Volunteer’s Dilemma: A computational study on dynamic graphs 志愿者困境中的同质性与合作演化:动态图的计算研究

IF 3.1 2区社会学

Social Networks Pub Date : 2023-11-23 DOI: 10.1016/j.socnet.2023.11.003

Sandra Stark , Daniel Peter , Andreas Tutić

{"title":"Homophily and the evolution of cooperation in the Volunteer’s Dilemma: A computational study on dynamic graphs","authors":"Sandra Stark , Daniel Peter , Andreas Tutić","doi":"10.1016/j.socnet.2023.11.003","DOIUrl":"https://doi.org/10.1016/j.socnet.2023.11.003","url":null,"abstract":"<div><p>We study the evolution of cooperation in the Volunteer’s Dilemma using the stochastic Moran process on dynamic graphs, which models a birth–death dynamic on structured finite populations. According to the Moran process, in each period one player is selected to reproduce, where the probability of being selected is proportional to payoff-related fitness levels, and a copy of this player is substituted for a player who is randomly selected to die. The interaction of the players is embedded in a network structure which determines the overlapping groups within which the Volunteer’s Dilemma is played. Networks vary to the extent they exhibit homophily, i.e., they vary in the extent to which the interacting groups primarily encompass either cooperators or defectors instead of a mix of both types of players. By varying the degree of homophily in the network, we thus can study the question if and to what extent assortment of strategies favors the evolution of cooperation in the Volunteer’s Dilemma. Our results show that a surprisingly high extent of homophily is required to ensure the evolution of cooperation in the Volunteer’s Dilemma when modeled as a stochastic process in pure strategies. Other parameters, such as selection pressure or the number of initial cooperators, have a comparatively small effect on the fixation of cooperation in the population.</p></div>","PeriodicalId":48353,"journal":{"name":"Social Networks","volume":"78 ","pages":"Pages 25-39"},"PeriodicalIF":3.1,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138391205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

How adolescents’ popularity perceptions change: Measuring interactions between popularity and friendship networks 青少年对受欢迎程度的认知如何变化:衡量受欢迎程度与友谊网络之间的相互作用

IF 3.1 2区社会学

Social Networks Pub Date : 2023-11-11 DOI: 10.1016/j.socnet.2023.10.004

Ana Bravo , Robert W. Krause , Rosario Ortega-Ruiz , Eva M. Romera

引用次数: 0

Offence versatility among co-offenders: A dynamic network analysis 同案犯犯罪多样性的动态网络分析

IF 3.1 2区社会学

Social Networks Pub Date : 2023-11-09 DOI: 10.1016/j.socnet.2023.10.003

David Bright , Jürgen Lerner , Giovanni Radhitio Putra Sadewo , Chad Whelan

{"title":"Offence versatility among co-offenders: A dynamic network analysis","authors":"David Bright , Jürgen Lerner , Giovanni Radhitio Putra Sadewo , Chad Whelan","doi":"10.1016/j.socnet.2023.10.003","DOIUrl":"https://doi.org/10.1016/j.socnet.2023.10.003","url":null,"abstract":"<div><p>Research examining co-offending has become increasingly popular over the last two decades. Despite this, there remains a dearth of research examining the dynamics of co-offending across time, largely due to limited access to longitudinal data. In the current paper we are interested in explaining crime versatility, and therefore we employ Relational Hyperevent Models (RHEM) to model the conditional probability that a given group of co-offenders engages in one set of crime categories rather than another. Thus, we are analyzing a two-mode network (actors by crime categories) and explain, conditional on a given group of co-offenders, their participation in the set of specific crime types involved in a particular crime event. With respect to co-offending, results reveal that, compared with solo offenders, groups of two or more co-offenders are more likely to engage in crime events involving more than just one crime category. Results suggest that in the context of co-offending both market and property crime show evidence of differential association and social learning. Naïve partners in co-offending partnerships learn the skills and knowledge needed to participate in co-offending involving market and property crime.</p></div>","PeriodicalId":48353,"journal":{"name":"Social Networks","volume":"78 ","pages":"Pages 1-11"},"PeriodicalIF":3.1,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0378873323000680/pdfft?md5=1d3fc728d6e5a5a3fa5553bb304234d9&pid=1-s2.0-S0378873323000680-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72284289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The role of sociopolitical workplace networks in involuntary employee turnover 社会政治工作场所网络在非自愿员工流动中的作用

IF 3.1 2区社会学

Social Networks Pub Date : 2023-11-08 DOI: 10.1016/j.socnet.2023.10.005

Theresa M. Floyd , Alexandra Gerbasi , Giuseppe (Joe) Labianca

{"title":"The role of sociopolitical workplace networks in involuntary employee turnover","authors":"Theresa M. Floyd , Alexandra Gerbasi , Giuseppe (Joe) Labianca","doi":"10.1016/j.socnet.2023.10.005","DOIUrl":"https://doi.org/10.1016/j.socnet.2023.10.005","url":null,"abstract":"<div><p>While poor performance is one reason employees are fired, previous research suggests it plays a limited role in explaining terminations. We argue that sociopolitical concerns play a role in determining who is terminated. Using field data from a U.S. health care company and experimental data using participants with supervisory experience, we show how the supervisor’s political concerns with the focal employee, which are contingent on the supervisor-employee political relationship and the way it is embedded within the workplace network, are related to dismissal decisions. Not only do we expect that a supervisor will be less likely to terminate an employee they see as a political ally and more likely to dismiss an adversary, but we also argue that a supervisor with fewer (more) alternative allies to the employee is less (more) likely to dismiss the employee. Additionally, a supervisor with numerous adversaries in their own network depends more heavily on the employee politically, making dismissal less likely, whereas if the employee has numerous adversaries, the supervisor has greater latitude to terminate the employee. Our findings contribute to research on involuntary turnover by showing that a social network approach to understanding organizational politics helps us understand why specific individuals are targeted for dismissal, above and beyond performance considerations.</p></div>","PeriodicalId":48353,"journal":{"name":"Social Networks","volume":"76 ","pages":"Pages 215-229"},"PeriodicalIF":3.1,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0378873323000692/pdfft?md5=1cfe6decf4841a5a9e16a7b63065e6bb&pid=1-s2.0-S0378873323000692-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91987038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving ERGM starting values using simulated annealing 利用模拟退火提高ERGM起始值

IF 3.1 2区社会学

Social Networks Pub Date : 2023-11-07 DOI: 10.1016/j.socnet.2023.10.002

Christian S. Schmid , David R. Hunter

{"title":"Improving ERGM starting values using simulated annealing","authors":"Christian S. Schmid , David R. Hunter","doi":"10.1016/j.socnet.2023.10.002","DOIUrl":"https://doi.org/10.1016/j.socnet.2023.10.002","url":null,"abstract":"<div><p>Much of the theory of estimation for exponential family models, which include exponential-family random graph models (ERGMs) as a special case, is well-established and maximum likelihood estimates (MLEs) in particular enjoy many desirable properties. However, in the case of many ERGMs, direct calculation of MLEs is impossible and therefore methods for approximating MLEs and/or alternative estimation methods must be employed. Many MLE approximation algorithms require an alternative estimate as a starting point. The maximum pseudo-likelihood estimator (MPLE) is frequently taken as this starting point. Here, we discuss a potentially large class of such alternatives based on the fact that, unlike the MLE, the MPLE fails to satisfy the so-called “likelihood principle”. This means that different networks may have different MPLEs even if they have the same sufficient statistics. We exploit this fact here to search for improved starting values for approximation-based MLE methods. The method we propose has shown its merit in producing an MLE for a network dataset and model that had defied estimation using all other known methods.</p></div>","PeriodicalId":48353,"journal":{"name":"Social Networks","volume":"76 ","pages":"Pages 209-214"},"PeriodicalIF":3.1,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0378873323000679/pdfft?md5=d7d75542cb88c005142ccf9b3261d9d1&pid=1-s2.0-S0378873323000679-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92046153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Predictors of romantic partner nomination reciprocity in adolescent social networks 青少年社交网络中浪漫伴侣提名互惠的预测因素

IF 3.1 2区社会学

Social Networks Pub Date : 2023-10-21 DOI: 10.1016/j.socnet.2023.10.001

Kate Vinita Fitch , Molly Copeland , jimi adams

引用次数: 0

The evolution of k-shell in syndication networks reveals financial performance of venture capital institutions 联合网络中k-shell的演化揭示了风险投资机构的财务绩效

IF 3.1 2区社会学

Social Networks Pub Date : 2023-10-05 DOI: 10.1016/j.socnet.2023.09.006

Ruiqi Li , Jing Liang , Cheng Cheng , Xiaoyan Zhang , Longfeng Zhao , Chen Zhao , H. Eugene Stanley

{"title":"The evolution of k-shell in syndication networks reveals financial performance of venture capital institutions","authors":"Ruiqi Li , Jing Liang , Cheng Cheng , Xiaoyan Zhang , Longfeng Zhao , Chen Zhao , H. Eugene Stanley","doi":"10.1016/j.socnet.2023.09.006","DOIUrl":"https://doi.org/10.1016/j.socnet.2023.09.006","url":null,"abstract":"<div><p>Venture capital (VC) is a relatively newly emergent industry that is still subject to large uncertainties in China. Therefore, building a robust social network with other VC institutions is a good way to share information, various resources, and benefit from skill and knowledge complementarity to against risks. Strong evidences indicate that better networked VC institutions are of a better financial performance, however, most of previous works overlook the evolution of VC institutions and only focus on some simple topology indicators of the static syndication network, which also neglects higher-order network structure and cannot give a comprehensive evaluation. In this paper, based on VC investment records in the Chinese market, we construct temporal syndication networks between VC institutions year by year. As k-shell decomposition considers higher-order connection patterns, we employ k-shell as an evaluation of the influence of VC institutions in syndication networks. By clustering time series of k-shell values, the VC institutions in China fall into five groups that are quite different from each other on financial performances and investment behaviors. This, in turn, proves the power of our method that only based on proper sequential network properties, we can reveal their financial investment performance. Compared to other network centrality measurements, k-shell is a better indicator that is indicated by a smaller intra-group distance and a larger inter-group distance.</p></div>","PeriodicalId":48353,"journal":{"name":"Social Networks","volume":"76 ","pages":"Pages 191-202"},"PeriodicalIF":3.1,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49762187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"社会学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1