Transcript of Mobile user context identification
- User Context in Mobile Applications M.RIFAD
- Introduction What is user context ?
- Introduction Identifying user location, find people around the
user, the time of the day, season, orientation, speed, emotions
these all can be included to define a context. Apply the relevant
context detail and try to find the best match, determine what is
the user is doing at at that time.
- Computing context network connectivity communication cost,
communication bandwidth nearby resource User context user profile,
location, social situation Physical context lighting, noise,
traffic condition, temperature Time context Time of a day, week,
month and season of the year
- Context aware computing A system is context-aware if it uses
context to provide relevant information and/or services to the
user, where relevancy depends on the users task. Time , location,
user social status. Context is always dynamic hard to predict.
- Important of the context context based application gather
information from a certain user and adopts the application
according to the user behaviors . Introduction of PDA and smart
phones. providing highly enhance user based application to the user
is totally depend on the user context.
- Important of the context For instance if user is in a meeting
or in a class room application identify the user context and make
the phone to silent mode or replying the phone calls with the
automated text message without the users interaction.
- Context based applications A simple call forwarding
system.
- Context based applications A simple call forwarding system.
Uses location context Activity context
- Context based applications Shopping assistant system.
- Context based applications Shopping assistant system. Location
context Identity context.
- Location based tourist guide application. App download
applications.
- Identifying the context. Sensing Location Global Positioning
System (GPS) GPS-less Low Cost Outdoor Localization For Very Small
Devices. Mobile-IP protocol. Mobile cells, wireless devices .
Issues. no uniform way to track locations with fine granularity
that works both indoors and outdoors.
- Identifying the context. External Sensors and internal sensors.
User social activities. User past data.
- Context Processing
- Methodology Extract the user context . Process the user
context. Logic based. Object model. Use the processed context to
make decisions.
- [1] Towards a Better Understanding of Context
andContext-AwarenessAnind K. Dey and Gregory D. AbowdGraphics,
Visualization and Usability Center and College of Computing,Georgia
Institute of Technology, Atlanta, GA, USA 30332-0280 [2] Matthias
BaldaufV-Research, Industrial Research and Development,Stadtstrasse
33, 6850 Dornbirn, AustriaE-mail:
matthias.baldauf@vresearch.atSchahramDustdar* and Florian
RosenbergDistributed Systems Group, Information Systems
Institute,Vienna University of Technology, Argentinierstrasse
8/184-1, 1040 Vienna, Austria [3]EijaKaasinenUser needs for
location-aware mobile servicesReceived: 1 August 2002 / Accepted:
15 November 2002_ Springer-Verlag London Limited 2003 [4] Mobile
Context Aware Systems: the intelligence tosupport tasks and
effectively utiliseresourcesRussell Beale1 and Peter
Lonsdale21r.beale@cs.bham.ac.ukSchool of Computer
Science2p.lonsdale@bham.ac.ukSchool of EngineeringUniversity of
BirminghamBirmingham B15 2TT UK [5]Context-aware computing
applications B Schilit, N Adams, R Want Mobile Computing Systems
and Applications, 1994. [6] A Survey of Context-Aware Mobile
Computing Research Guanling Chen and David Kotz 2005.11. 14 Cho
Jaekyu jkcho@mmlab.snu.ac [7]Y. Kawahara, H. Kurasawa, H. Morikawa,
Recognizing user context using mobile handsets with acceleration
sensors, in: (IEEE) Intl. Conf. on Portable Information Devices,
PORTABLE'07, 2007, pp. 15 [8] E. Welbourne, J. Lester, A. LaMarca,
G. Borriello, Mobile context inference using low-cost sensors, in:
Location- and Context-Awareness, in: LectureNotes on Computer
Science (LNCS), vol. 3479, Springer-Verlag, 2007, pp. 254263
[9][There is more to Context than LocationAlbrecht Schmidt, Michael
Beigl, and Hans-W. Gellersen Telecooperation Office (TecO),
University of Karlsruhe,Vincenz-Priessnitz-Str. 1, 76131 Karlsruhe,
Germany albrecht@teco.edu
- Taxonomyofarchitectures,contextawareness,technologies and
applications Christos Emmanouilidis n,
RemousArisKoutsiamanis,AimiliaTasidouHead,ComputationalSystems&Applications,Athena,Research&InnovationCentreTsimiski5
8,67100Xanthi,Greece