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SUMMARY:(Research) Device Analyzer: Uncovering mobile usage patterns / (Re
 search) Energy Model for Modern Smartphone GPS Sensor - Daniel Wagner and 
 Mattias Linnap
DTSTART:20101122T130000Z
DTEND:20101122T140000Z
UID:TALK25466@talks.cam.ac.uk
CONTACT:Andrew Rice
DESCRIPTION:Device Analyzer: Uncovering mobile usage patterns\, Daniel Wag
 ner\n\nDevice Analyzer is a data-collection application for Android mobile
  devices. The application runs in the background and collects data from a 
 multitude of sources\, giving a snapshot of phone usage as well as context
 ual information when available. The system combines event-driven logging o
 f events with polling for continuously changing variables such as CPU load
  and memory use. The system is currently being tested by a few members of 
 the DTG and should be circulated on the CL-Android mailing list for a clos
 ed beta shortly. In this talk I will give an overview of the types of data
  collected\, present some of the employed techniques and share some of the
  lessons I learned in the process. \n\nEnergy Model for Modern Smartphone 
 GPS Sensor\, Mattias Linnap\n\nGPS is one of the most useful\, but also th
 e most energy consuming sensor on modern phones. Unlike other sensors\, it
 s behaviour is highly non-linear. I will present the results of an experim
 ent to build a detailed energy model for GPS\, and explain the behaviour w
 ith a short introduction on how the entire GPS system works.
LOCATION:SS03\, William Gates Building
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