422 citations · 1.1k across the 14 of their papers we have counts for
15 papers
Using Smartphones to Study Vaccination Decisions in the Wild
Nicolò Alessandro Girardini, Arkadiusz Stopczynski, Olga Baranov +4
One of the most important tools available to limit the spread and impact of infectious diseases is vaccination. It is therefore important to understand what factors determine peopl…
AVA-ActiveSpeaker: An Audio-Visual Dataset for Active Speaker Detection
Joseph Roth, Sourish Chaudhuri, Ondrej Klejch +8
Active speaker detection is an important component in video analysis algorithms for applications such as speaker diarization, video re-targeting for meetings, speech enhancement, a…
Offline Behaviors of Online Friends
Piotr Sapiezynski, Arkadiusz Stopczynski, David Kofoed Wind +2
In this work we analyze traces of mobility and co-location among a group of nearly 1000 closely interacting individuals. We attempt to reconstruct the Facebook friendship graph, Fa…
Contact activity and dynamics of the online elite
Enys Mones, Arkadiusz Stopczynski, Sune Lehmann
Humans interact through numerous channels to build and maintain social connections: they meet face-to-face, initiate phone calls or send text messages, and interact via social medi…
Inferring Person-to-person Proximity Using WiFi Signals
Piotr Sapiezynski, Arkadiusz Stopczynski, David Kofoed Wind +2
Today's societies are enveloped in an ever-growing telecommunication infrastructure. This infrastructure offers important opportunities for sensing and recording a multitude of hum…
Vaccination and Complex Social Dynamics
Enys Mones, Arkadiusz Stopczynski, Alex Pentland +2
Vaccination and outbreak monitoring are essential tools for preventing and minimizing outbreaks of infectious diseases. Targeted strategies, where the individuals most important fo…
Physical Proximity and Spreading in Dynamic Social Networks
Arkadiusz Stopczynski, Alex Sandy Pentland, Sune Lehmann
Most infectious diseases spread on a dynamic network of human interactions. Recent studies of social dynamics have provided evidence that spreading patterns may depend strongly on…
Temporal Fidelity in Dynamic Social Networks
Arkadiusz Stopczynski, Piotr Sapiezynski, Alex 'Sandy' Pentland +1
It has recently become possible to record detailed social interactions in large social systems with high resolution. As we study these datasets, human social interactions display p…
Fundamental structures of dynamic social networks
Vedran Sekara, Arkadiusz Stopczynski, Sune Lehmann
Social systems are in a constant state of flux with dynamics spanning from minute-by-minute changes to patterns present on the timescale of years. Accurate models of social dynamic…
Tracking Human Mobility using WiFi signals
Piotr Sapiezynski, Arkadiusz Stopczynski, Radu Gatej +1
We study six months of human mobility data, including WiFi and GPS traces recorded with high temporal resolution, and find that time series of WiFi scans contain a strong latent lo…
Privacy in Sensor-Driven Human Data Collection: A Guide for Practitioners
Arkadiusz Stopczynski, Riccardo Pietri, Alex Pentland +2
In recent years, the amount of information collected about human beings has increased dramatically. This development has been partially driven by individuals posting and storing da…
Privacy for Personal Neuroinformatics
Arkadiusz Stopczynski, Dazza Greenwood, Lars Kai Hansen +1
Human brain activity collected in the form of Electroencephalography (EEG), even with low number of sensors, is an extremely rich signal. Traces collected from multiple channels an…
Measuring large-scale social networks with high resolution
Arkadiusz Stopczynski, Vedran Sekara, Piotr Sapiezynski +4
This paper describes the deployment of a large-scale study designed to measure human interactions across a variety of communication channels, with high temporal resolution and span…
Crowds, Bluetooth, and Rock-n-Roll. Understanding Music Festival Participant Behavior
Jakob Eg Larsen, Piotr Sapiezynski, Arkadiusz Stopczynski +2
In this paper we present a study of sensing and analyzing an offline social network of participants at a large-scale music festival (8 days, 130,000+ participants). We place 33 fix…
The Smartphone Brain Scanner: A Mobile Real-time Neuroimaging System
Arkadiusz Stopczynski, Carsten Stahlhut, Jakob Eg Larsen +2
Combining low cost wireless EEG sensors with smartphones offers novel opportunities for mobile brain imaging in an everyday context. We present a framework for building multi-platf…