Archive for the ‘SONIC News’ Category

Noshir Contractor’s paper accepted at ASONAM 2018

19
Jun

Noshir Contractor co-authored a paper titled, “Generative Modeling of Human Behavior and Social Interactions Using Abductive Analysis”, with Yihui Ren, Vanessa Cedeno-Mieles, Zhihao Hu, Xinwei Deng, Abhjijin Adiga, Christopher Barrett, Saliya Ekanayake, Joshua Epstein, Brian Goode, Gizem Korkmaz, Christopher Kuhlman, Dustin Machi, Michael Macy, Madhav Marathe, Naren Ramakrishnan, Sekharipuram Ravi, Parang Saraf and Nathan Self. The paper was accepted at EEE/ACM International Conference on Social Networks Analysis and Mining (ASONAM 2018), held in Barcelona, Spain.

Noshir Contractor presents at a NetSci 2018 satellite workshop in Paris

18
Jun

Noshir Contractor’s presentation, titled “Deep Space Collaboration: Impact of Social Networks on Task Switching in Collaborative Work”, was co-authored with Alina Lungeanu, Patrick Park, and Leslie A. DeChurch.  This was presented at a NetSci 2018 satellite workshop in Paris, France on June 12, 2018.  The paper can be found here.

Noshir Contractor presents at ICA 2018

31
May

Noshir Contractor presents a paper (co-authored with Michael Schultz) titled “Communicating through space and over time” at ICA 2018, in Prague, Czech Republic.   Schultz, M., DeChurch, L., & Contractor, N. (2018, May). Communicating through space and over time. Paper to be presented at the 68th Annual ICA conference, “Voices,” Prague, Czech Republic.

Noshir Contractor and Kyosuke Tanaka presented their research at #ICA2018

28
May

Noshir Contractor and Kyosuke Tanaka presented their research at the 68th Annual Conference of International Communication Association in Prague, the Czech Republic: Tanaka, K., DeChurch, L., & Contractor, N. (2018, May). Origins of omission and commission errors in perceptions of group communication networks. Paper to be presented at the 68th Annual ICA conference, “Voices,” Prague, Czech Republic. Schultz, M., DeChurch, L., & Contractor, N. (2018, May). Communicating through space and over time. Paper to be presented at the 68th Annual ICA conference, “Voices,” Prague, Czech Republic.

Noshir Contractor presents at the Computational Social Science Luncheon

21
May

Noshir Contractor’s presentation at the Computational Social Science Luncheon at Northwestern University on May 21, 2018 was titled “Some Assembly Required: Teaming in the 21st Century”.

Modeling the diffusion of complex innovations as a process of opinion formation through social networks

18
May

A new research article by Valentina Assenova demonstrates how innovations diffuse through networks. Her model incorporates opinion formation processes that occur through diffusion. She also tested her model with diffusion data from a field experiment previously collected in India (Banerjee et al., 2013). The research article is published in PLoS One: http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0196699 A podcast about the article is here: http://knowledge.wharton.upenn.edu/article/can-innovation-spread-faster-through-social-networks/ Reference: Banerjee A, Chandrasekhar AG, Duflo E, Jackson MO. The Diffusion of Microfinance. Science. 2013;341(6144):1236498. pmid:23888042

Yuan Li successfully defends dissertation on leveraging meta data and topology to infer the role that a node plays in the network

09
May

Yuan successfully defended his dissertation titled “Inference in heterogeneous network”.  His research leverages meta data, namely node attributes and dyadic attribute, and topology to infer the role that a node plays in the network.  His committee consisted of Noshir Contractor, Wenxin Jiang, and Bruce Spencer.  Upon graduating with a PhD in Statistics, Yuan will work at Google’s Search Team as a Data Scientist.

Alexandros Nathan successfully defends dissertation on methodological and applied facets of machine learning

08
May

Alexandros successfully defends his dissertation titled “Essays in Machine Learning, Social Networks and Marketing”.  He designed novel distributed optimization algorithms and investigated problems that lie at the interface of social networks, and marketing, with an emphasis on customer retention and new product adoption. His committee consisted of Noshir Contractor, Diego Klabjan, and Brian Uzzi.

Jacqueline Ng successfully defends dissertation on how teams form and what they need to perform

07
May

Jackie successfully defended her dissertation titled “Teams and Organizing in the Digital Age:  How Team Networks Form and Why They Perform”.  Her research explores the relationship between how teams form and what they need to perform, highlighting a paradox between what teams do and what they ought to do.  Her committee consisted of Noshir Contractor (Chair), Jeanne Brett, Leslie DeChurch, Seyed Iravani, and Brian Uzzi.

SONIC Speaker Series welcomes Prasad Balkundi in April 2018

02
May

Despite a resurgence of research on negative ties in social networks, a comprehensive understanding of negative and positive has yet to be provided. Incorporating evidence from prior 163 independent samples we examine whether the initiation of positive and negative relationships (i.e., out-degree) or the reception of positive and negative relationships (i.e., in-degree) is more impactful to the focal employee’s effectiveness. Furthermore, to address the negative asymmetry hypothesis in social networks, we compare the relative importance of positive versus negative work relationships while holding the directionality constant. This meta-analytic review makes five contributions to theory on negative and positive social networks by (a) demonstrating the undermining impact of negative ties on performance and job attitudes; (b) providing information on the negative asymmetry hypothesis within social networks to reveal that negative ties occur less frequently than positive ties and that any asymmetry effects depend on the relative number of negative ties to positive ties in the context; (d) distinguishing between haters (senders of negative ties) and jerks (receivers of negative ties) to illustrate that haters have worse job attitudes than jerks, but the two do not differ on performance; and (e) providing positive and negative affect as antecedents to negative ties. Implications of these ...