What's Up at CNS

Structure and Dynamics of the Relationship between Network Measures and Psychological Attributes

March 27, 2017

First year PhD student Srebrenka Letina held a presentation about her research proposal, titled “Structure and Dynamics of the Relationship between Network Measures and Psychological Attributes”. Srebrenka argued that we still don’t know enough about how we shape our networks and how we are shaped by them. As we actively transform the structure of our networks differently depending on our own specific properties, and furthermore, our psychological characteristics have been conceptualized as a complex network system (network psychometrics), it would be crucial to gain deeper understanding how networks "within" and networks between individuals influence each other.

Patterns of Corruption and Collusion in Public Auctions

March 20, 2017

On February 20, Johannes Wachs gave us a fascinating talk about his main research focus: detecting corruption patterns in public auction data. His research has already gained some well-deserved attention and was presented on some of the great conferences contributing to network science (like NetSciX and ICCSS). Johannes’s lead question is the following: Can we identify patterns of corruption, cartel behavior and collusion on public auction markets, by looking at the bipartite networks of firms and contract issuers? Can we uncover universal patterns that are less case-specific and could help policy makers and anti-corruption agencies?

Shock Propagation and Regulation of Interacting Economic Networks

March 13, 2017

First year PhD student András Borsos shared an early version of his thesis proposal, titled “Shock propagation and regulation of interacting economic networks”. András argued effectively that though much progress has been made on understanding contagion risks in individual sectors, models in the literature often neglect the complex interactions between different layers of the economy.

Principles of Dynamical Modularity in Biological Regulatory Networks

March 6, 2017

David Deritei talkDávid Deritei, second year PhD student of Network Science, held a presentation about the work he has done on biological regulatory networks in collaboration with Erzsébet Ravasz-Regan from College of Wooster and colleagues from the Hungarian Physics Institute at Babes-Bolyai University, which was published recently in Scientific Reports.

Multiplexity Entering the Game

February 27, 2017

Federico Battiston from the School of Mathematical Sciences, Queen Mary University of London, UK and Brain & Spine Institute, CNRS, Paris, France, part of the LASAGNE EU project, talked about recent research results related to the structure and dynamics of multiplex networks in his public talk at CNS CEU.

Multiplex networks (considered to be networks built up by layers of different networks) have been studied just as weighted aggregated networks for a long time, which results in significant information loss. But how can we expand our knowledge about multiplex systems, such as the organization structure of terrorist groups, by analyzing the co-evolution of trust, operational, communication and business networks among members?