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SocialMotion: Measuring the Hidden Social Life of a Building

  • Christopher R. Wren
  • Yuri A. Ivanov
  • Ishwinder Kaur
  • Darren Leigh
  • Jonathan Westhues
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4718)

Abstract

In this paper we present an approach to analyzing the social behaviors that occur in a typical office space. We describe a system consisting of over 200 motion sensors connected in a wireless network observing a medium-sized office space populated with almost 100 people for a period of almost a year. We use a tracklet graph representation of the data in the sensor network, which allows us to efficiently evaluate gross patterns of office-wide social behavior of its occupants during expected seasonal changes in the workforce as well as unexpected social events that affect the entire population of the space. We present our experiments with a method based on Kullback-Leibler metric applied to the office activity modelled as a Markov process. Using this approach we detect gross deviations of short term office-wide behavior patterns from previous long-term patterns spanning various time intervals. We compare detected deviations to the company calendar and find and provide some quantitative analysis of the relative impact of those disruptions across a range of temporal scales. We also present a favorable comparison to results achieved by applying the same analysis to email logs.

Keywords

Sensor Network Social Network Analysis Disruptive Event Markov Chain Model Social Fabric 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Christopher R. Wren
    • 1
  • Yuri A. Ivanov
    • 1
  • Ishwinder Kaur
    • 2
  • Darren Leigh
    • 1
  • Jonathan Westhues
    • 1
  1. 1.Mitsubishi Electric Research Laboratories, Cambridge, MAUS
  2. 2.M.I.T. Media Laboratory, Cambridge, MAUS

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