I am interested in the convergence of the digital and the physical driven by the adoption of personal networked devices, wearable sensors and the ensuing multiplication of behavioral proxies. I work with data on digitally-sensed/mediated human behaviors, targeting research questions in computational social science and digital epidemiology. I use concepts and models from complex systems science and network science together with methods from data mining and machine learning.
High-Resolution Social Networks. I am a founder and PI of the SocioPatterns international collaboration, that uses wearable proximity sensors to map human spatial behavior in a variety of environments such as schools, hospitals, offices and social gatherings. During the last 5 years we have designed and supervised over 25 data collection campaigns in 10 countries, involving over 50,000 subjects. The resulting large-scale datasets, partially shared with the public, are used to investigate human mobility, time-varying complex networks, homophily in social networks and more.
Digital Epidemiology. I am interested in measuring high-resolution contact networks and integrating them into computational models of infectious disease dynamics. In the context of the SocioPatterns collaboration we have measured high-resolution human contact networks in schools and hospitals, building computational models of flu-like disease spread and designing mitigation strategies and summarized data representations for structured populations.
Online Social Networks and Web Science. I carry out research on collaborative tagging systems, on information networks from social annotations, on the relation between information networks and human semantics, and on topic popularity. I am interested in the use of tensor decompositions for signal extraction in time-varying networks, with applications to topic detection in information streams and structure detection in time-varying networks. I am a founder and PI of the DataInterfaces collaboration, that uses state-of-the-art Web technologies to connect data and people.
[co-founder, co-PI] SocioPatterns
[co-founder, co-PI] DataInterfaces ‐ interfaces between data and people
Multiplex - Foundational Research on Multi-level Complex Networks
PREDEMICS - Preparedness, Prediction and Prevention of Emerging Zoonotic Viruses
KNOWeSCAPE - Analyzing the Dynamics of Information and Knowledge Landscapes
StudioLab - a European Platform for Creative Interactions between Art and Science