Alumni and Former Visitors

Former Visiting Faculty

Ancsa Hannák

I recently defended my PhD in the College of Computer & Information Science at Northeastern University. My advisors are Alan Mislove and David Lazer. In my research I am investigating the impacts of personalization in various Web sevices. I am also interested in data mining and measurements on online social networks and learning new tools for analyzing large data sets. For my detailed resume please see my cv.

Blog posts by or about Ancsa on What's Up at DNDS:

Measuring Personalization in Online Services

Center Has Strong Presence at Flagship Conference on Networks


PhD in Computer Science, Northeastern University Boston
Bsc, Elte Applied Mathematics
Bsc, Elte Social Sciences

Courses taught by Ancsa Hannak

Projects with involvement of Ancsa Hannak

Gendered Creative Teams: From Marginality to Success

Rosario N. Mantegna

Rosario N. Mantegna was a professor at CEU in a joint appointment of the Department of Economics and the Department of Network and Data Science (then Center for Network Science). Besides Palermo University, where he holds a professorship, he worked at the MPI for Quantum Optics in Munich, and at Boston University. His research concerns interdisciplinary applications of statistical physics. He started to work in the area of the analysis and modeling of social and economic systems with tools and concepts of statistical physics as early as 1990 and he is one of the pioneers in the field of econophysics. He coauthored the first book on econophysics. Rosario participated in and/or coordinated several projects, including Marie Curie Host Fellowship, COST, EU STREP, INET and national ones. He received his PhD in physics from Palermo University in 1990.

Rossano Schifanella

Rossano is an Assistant Professor in Computer Science at the University of Turin, Italy, where he is a member of the Applied Research on Computational Complex Systems group. He is a visiting scientist at Nokia Bell Labs and a former visiting scientist at Yahoo Labs and at the Center for Complex Networks and Systems Research at the Indiana University where he was applying computational methods to model the behavior of (groups of) individuals and their interactions on social media platforms. His research embraces the creative energy of a range of disciplines across data mining, network analysis, urban informatics, computational social science, and data visualization. 


Ph.D. in Computer Science

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Courses taught by Rossano Schifanella

Data Mining and Big Data Analytics

János Török


PhD, Physics (”Shearing of granular materials”), Budapest University of Technology and Economics
DEA, Dynamique des Fluides et des Transferts, Paris VI-Paris Sud
MSc, French Scientific Translator, Eötvös Loránd University Budapest
MSc, Physics, Eötvös Loránd University Budapest

Former Research Fellows

Chulho Choi

Chulho was involved in the CIMPLEX Project.

Blog posts by or about Chulho on What's Up at DNDS:

Pop in to the Evolution of Physics

Carl Nordlund

Carl Nordlund was a Postdoctoral Research Fellow with a joint position at the Department of Network and Data Science (then Center for Network Science) and the Department of Political Science. He received his PhD in human ecology from the Department of Social and Economic Geography, Lund university, in september 2010, with undergraduate studies in human ecology, economic history, development studies, economics, political ecology, environmental justice, programming, mathematics, physics, and indonesian. In his thesis monograph, network-analytical methods were applied to international trade flows of agricultural and fuel commodities, examining would-be relations between structural positionality in trade networks and occurrences of ecological unequal exchange. Outside academia, he has worked for the Swedish EPA, WWF Sweden, TV4, KTH, Swedish Space Corporation etc. His research interest is in social network analysis - methods, applications and research design – focusing on political networks and international relations.

Carl was involved in the Global Production Networks, Structural Inequalities and Unequal Exchange and the Ceunet/Indra projects.

Blog posts about Carl on What's Up at DNDS:

Center for Network Science Fellow Wins World Society Foundation Award of Excellence


PhD, Human ecology, Lund university, Sweden

Former Visiting Students

Cristian Candia

Hi! I'm Cristian Candia-Castro-Vallejos. I'm a Chilean physicist who also did a physics engineering program at the University of Concepcion. There, I worked on experimental physics at the center for optics and photonics. When I was in my master in physics, and also was teaching some physics classes at the University of Concepcion and University of Bio Bio, I realized that I needed to explore something else, something outside of the physics labs, so I changed my focus and I started to study econophysics. That was my entrance to the social science world. 

After finishing my master, I moved to the University of Desarrollo in Santiago and I got enrolled to the Center for Social Complexity, I got my master in social complexity science, then I moved to the MIT media lab for a year to work on my  P.hD. thesis, then I moved for six months to the Barabasi lab, to continue working on my thesis. Now, I'm finishing my Ph.D. at the Department of Network and Data Science at CEU. 

My interests are related to analytic studies on collective memory; knowledge diffusion; decision making, learning, and bullying in the education systems; evolutionary psychology; economic complexity, reality mining; science of success; collective learning; data science; social dynamics; and applied networks. Besides, I'm very interested in basketball, sailing, football, dancing, and singing (I had a band attempt and surprisingly I was the singer).

Sara Heydari

I am a PhD student in Complex Systems at Aalto University, Finland. I have a mixed background of Physics and Computer Science: I did my Bachelor's studies at Shahid Beheshti University in Iran, where I got interested in network science and then moved to Finland to do a Master's degree in Complex Systems in the Computer Science Department of Aalto University.

I am interested in applying network science and mathematical methods to study the behavior of people and societies. My Master’s thesis uses mobile-phone datasets to investigate persistent features of ego-networks both in time and across different channels of communication.

Martina Iori

Martina Iori is currently a third-yearPhD candidate in Economics, curriculum Economics and Complexity, at the University of Turin and Collegio Carlo Alberto (Turin, Italy). She received her Master Degree in Theoretical Physics from the University of Turin, developing her thesis at the Statistical Physics group of the International School for Advanced Studies (SISSA) in Trieste. She held a Master of Arts in Economics and Complexity at Collegio Carlo Alberto, where she studied both standard economic theories and advanced computational techniques, commonly used in complex-system analysis.

In her PhD thesis, she investigates how methodologies as agent-based modelling, network analysis and machine learning are becoming more and more necessary to describe the current economic systems. In particular, her research focuses on two different systems: retail electricity market and scientific research.

Blog posts by Martina on What's Up at DNDS:

Ecological Networks – From Individuals to Ecosystems

Daniel Monsivais

Daniel Monsivais is a doctoral student in Computer Science at Aalto University. He has BSc in Physics (experimental acoustics - wave propagation in dispersive media) and a MSc in Computer Science (GP-GPU applied to Secondary Oil Recovery models), both from National University of Mexico (UNAM),  and a MSc in  Complexity Science (spatially embedded networks and optimal packing) from  University of Mexico City (UACM). In the recent years as an Aalto PhD student, he has been working on Complex Social Systems (human social focus over the life course; influence of cultural, religion and migration on the structure of kinship networks), Circadian Rhythms (sleep-wake cycle inferred from mobile phone activity) and Experimental and Behavioural Economics (human decision making process in online games).

He is also interested in data mining and machine learning techniques, agent based models, numerical methods, and open-source software and operating systems.

Ludovico Napoli

Ludovico is an International Master student in Physics of Complex Systems at the University of Pisa. The Master is organized in four semesters in different academic institutions: Sissa and ICTP in Trieste, Politecnico in Turin and a consortium of universities in Paris (Sorbonne, Paris VII, Paris Saclay). Ludovico has recently lost some interest in pure theoretical physics and he is now getting fascinated by the application of the quantitative tools commonly used in physics to the study of complex social and economic phenomena, and for this reason, he has come to DNDS to work on his Master’s thesis. Among other things, he loves sports (especially rowing, football, sailing, and snowboarding) and music (he plays the piano and the guitar).

Judit Varga

Judit is a PhD student in Science, Society and Technology Studies at the University of Nottingham (UK). She has a background in the behavioural and social sciences. Judit’s thesis investigates how the knowledge created through the analysis of georeferenced social media data (such as geotagged Tweets and Instagram posts) is situated in the history of human geography. It combines participant observation and bibliometric network analysis to gain a picture of how human geography researchers advocate for and against the use of such data. During her visit at DNDS, Judit aims to explore how she can apply network science methods in her project.