Elements of information theory
Elements of information theory
Characterizing mobility and network usage in a corporate wireless local-area network
Proceedings of the 1st international conference on Mobile systems, applications and services
Access and mobility of wireless PDA users
ACM SIGMOBILE Mobile Computing and Communications Review
Reality mining: sensing complex social systems
Personal and Ubiquitous Computing
Analysis of a campus-wide wireless network
Wireless Networks
Analysis and implications of student contact patterns derived from campus schedules
Proceedings of the 12th annual international conference on Mobile computing and networking
Impact of communication infrastructure on forwarding in pocket switched networks
Proceedings of the 2006 SIGCOMM workshop on Challenged networks
Shooter localization and weapon classification with soldier-wearable networked sensors
Proceedings of the 5th international conference on Mobile systems, applications and services
Co-Presence Communities: Using Pervasive Computing to Support Weak Social Networks
WETICE '06 Proceedings of the 15th IEEE International Workshops on Enabling Technologies: Infrastructure for Collaborative Enterprises
Exploiting social interactions in mobile systems
UbiComp '07 Proceedings of the 9th international conference on Ubiquitous computing
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The size of existing data sets regarding human mobility and person-to-person contact has been limited by the labor-intensive nature of the data collection techniques employed. In this paper, we propose a practical data collection system which is automatic and transparent to the user, requires only installing new software, and uses the multiple sensing capabilities provided by current commodity mobile devices. This approach allows the scale and duration of these human contact studies to increase by several orders of magnitude and allows for the collection of location and contact information about individuals who do not install our data collection software. We present an analysis of the expected coverage of our data collection system drawing from existing data sets and random graph theory. To illustrate the type of application enabled by the availability of human contact data, we present "personalized epidemiology," a novel application that provides its users with information about their exposure to illness and offers advice on how to remain healthy.