PLEAD '12 Pub Date : 2012-11-02 DOI: 10.1145/2389661.2389665

David García, Fernando Mendez, U. Serdült, F. Schweitzer

引用次数: 48

The diffusion of political memes in social media: keynote abstract 政治模因在社交媒体中的传播:主旨摘要

PLEAD '12 Pub Date : 2012-11-02 DOI: 10.1145/2389661.2389663

F. Menczer

{"title":"The diffusion of political memes in social media: keynote abstract","authors":"F. Menczer","doi":"10.1145/2389661.2389663","DOIUrl":"https://doi.org/10.1145/2389661.2389663","url":null,"abstract":"This talk presents ongoing work on the study of information diffusion in social media, focusing in particular on political communication in the Twitter microblogging network. Social media platforms play an important role in shaping political discourse in the US and around the world. The truthy.indiana.edu infrastructure allows us to mine and visualize a large stream of social media data related to political themes. The analyses in this keynote address polarization and cross-ideological communication, and partisan asymmetries in the online political activities of social media users. Machine learning efforts can successfully leverage the structure of meme diffusion networks to detect orchestrated astroturf attacks that simulate grassroots campaigns, and to predict the political affiliation of active users. The retweet network segregates individuals into two distinct, homogenous communities of left- and right-leaning users. The mention network does not exhibit this kind of segregation, instead forming a communication bridge across which information flows between these two partisan communities. We propose a mechanism of action to explain these divergent topologies and provide statistical evidence in support of this hypothesis. Related to political communication are questions about the birth of online social movements. Social media data provides an opportunity to look for signatures that capture these seminal events. Finally, I will introduce a model of the competition for attention in social media. A dynamic of information diffusion emerges from this process, where a few ideas go viral while most do not. I will show that the relative popularity of different topics, the diversity of information to which we are exposed, and the fading of our collective interests for specific memes, can all be explained as deriving from a combination between the competition for limited attention and the structure of social networks. Surprisingly, one can reproduce the massive heterogeneity in the popularity and persistence of ideas without the need to assume different intrinsic values among those ideas.","PeriodicalId":131970,"journal":{"name":"PLEAD '12","volume":"145 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115132587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

The price of precision: voter microtargeting and its potential harms to the democratic process 精确的代价:选民的微观目标及其对民主进程的潜在危害

PLEAD '12 Pub Date : 2012-11-02 DOI: 10.1145/2389661.2389671

Solon Barocas

{"title":"The price of precision: voter microtargeting and its potential harms to the democratic process","authors":"Solon Barocas","doi":"10.1145/2389661.2389671","DOIUrl":"https://doi.org/10.1145/2389661.2389671","url":null,"abstract":"This paper explores the potentially perverse effects of voter microtargeting, delineating how the very same techniques that empower political candidates to be more efficient and effective in their campaigning may also undermine the political and social fabric of the democracies in which those candidates seek office. The first part of the paper reviews the apparent attraction and stated goals of voter microtargeting and the technical processes upon which it relies. The second part draws out the ethical and political implications of the practice, pointing to some troubling empirical findings. The paper considers how microtargeting contributes to (1) an increased willingness and ability to deliver messages on wedge issues that would be extremely divisive in a more public forum; (2) voter discrimination and de facto disenfranchisement, (3) a chilling of political participation due to perceived violations of voters' privacy, and (4) a general trend toward single issue politics that leads to increased partisanship among voters and ambiguous political mandates for elected representatives. The final part of the paper introduces Soap Box: a project (initiated by the author) to develop a website that will act as a clearinghouse for targeted political advertising. The website aims to make these messages available to all-comers, forcing campaigns to account for and reconcile the different positions they present to different audiences. The paper concludes with a discussion of the limits of an approach that seeks to combat the more worrisome aspects of voter microtageting by exposing the tailored messages to greater public scrutiny.","PeriodicalId":131970,"journal":{"name":"PLEAD '12","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122548440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 66

French presidential elections: what are the most efficient measures for tweets? 法国总统大选:推特最有效的措施是什么?

PLEAD '12 Pub Date : 2012-11-02 DOI: 10.1145/2389661.2389669

Flavien Bouillot, P. Poncelet, M. Roche, D. Ienco, Elnaz Bigdeli, S. Matwin

引用次数: 12

Party cohesion in presidential races: applying social network theory to the 2011 preprimary 总统竞选中的政党凝聚力:将社会网络理论应用于2011年预选

PLEAD '12 Pub Date : 2012-11-02 DOI: 10.1145/2389661.2389667

Andrew J. Dowdle, Song Yang, Scott Limbocker, P. Stewart, Karen Sebold

引用次数: 3

Opinions network for politically controversial topics 关于政治争议话题的意见网络

PLEAD '12 Pub Date : 2012-11-02 DOI: 10.1145/2389661.2389668

Rawia Awadallah, Maya Ramanath, G. Weikum

引用次数: 12

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