CARIMA Context-aware Model for QoE Analysis

in Mobile Environments

Pedro Mateo (pedromateo@um.es)Diego Sevilla, Gregorio Martınez

Interaccion 2013 September

Pedro Mateo (pedromateo@um.es) Diego Sevilla, Gregorio Martınez ()Model-based QoE Analysis Interaccion 2013 September 1 / 16

Agenda

CARIM

A Context-aware Model for QoE Analysisin Mobile Environments

1 Motivationthe problem and the proposed solution

2 CARIM metamodeldescription of CARIM features and benefits

3 Practical overview and Conclusionworking scenario, the experiment and conclusion

Pedro Mateo (pedromateo@um.es) Diego Sevilla, Gregorio Martınez ()Model-based QoE Analysis Interaccion 2013 September 2 / 16

IMotivation

The problem

When we analyze mobile interaction...

some methods use cumulative values → but interaction is dynamic

context matters → but context changes

some methods lack structure → hinders analysis/comparison

interaction data usually separated from quality perception → QoE?

this hinders mobile QoE analysis

Pedro Mateo (pedromateo@um.es) Diego Sevilla, Gregorio Martınez ()Model-based QoE Analysis Interaccion 2013 September 4 / 16

The solution

Thus, we propose:

describe interaction stepwise, using turns

describe the surrounding context dynamically

structure parameters to allow comparison of interaction records

link quality perception to interaction records

CARIM metamodel does this way

Pedro Mateo (pedromateo@um.es) Diego Sevilla, Gregorio Martınez ()Model-based QoE Analysis Interaccion 2013 September 5 / 16

IICARIM

CARIM: dynamic description of multimodal interaction

based on PALADIN1 ⇒ multimodal interaction metamodel

describes communication content + metadata by turn

1http://www.catedrasaes.org/wiki/MIMPedro Mateo (pedromateo@um.es) Diego Sevilla, Gregorio Martınez ()Model-based QoE Analysis Interaccion 2013 September 7 / 16

CARIM: context-aware

contextual factors affecting users experience with mobile apps

dimensions: physical, social, location/time, device and connectivity

context described by turn ⇒ dynamic environment

Pedro Mateo (pedromateo@um.es) Diego Sevilla, Gregorio Martınez ()Model-based QoE Analysis Interaccion 2013 September 8 / 16

CARIM: perceived quality and cognitive state

describes perceived quality using parameters of a questionnaire

describes influencing factors for quality perception:

users mood and attitude towards technology

ratings linked to interaction ⇒ enhanced QoE analysis

Pedro Mateo (pedromateo@um.es) Diego Sevilla, Gregorio Martınez ()Model-based QoE Analysis Interaccion 2013 September 9 / 16

Benefits: unified criteria

same structure and metrics regardless of the execution environment

provides experts and tools with unified criteria

allows comparison between CARIM instances

Pedro Mateo (pedromateo@um.es) Diego Sevilla, Gregorio Martınez ()Model-based QoE Analysis Interaccion 2013 September 10 / 16

Benefits: run-time nature

run-time nature ⇒ relationship (data ↔ time) ⇒ running instances

dynamic (stepwise) analysis of interaction

real-time adaptation decisions

Pedro Mateo (pedromateo@um.es) Diego Sevilla, Gregorio Martınez ()Model-based QoE Analysis Interaccion 2013 September 11 / 16

IIIPractical overview and

Conclusion

Typical scenario of use

More info about CARIM and the other tools:

Mateo et al., http://www.catedrasaes.org/wiki/Carim

Pedro Mateo (pedromateo@um.es) Diego Sevilla, Gregorio Martınez ()Model-based QoE Analysis Interaccion 2013 September 13 / 16

The experiment

CARIM is in an experiment comparing2 different interaction designs

the user has to play with a LunarLander game, and then answer a shortquestionnaire

we need more participants. Please, helpus and join the experiment...

using this QR code, or

going to www.pedromateo.es/carim-experiment.html, or

search for “phd experiment” in

Pedro Mateo (pedromateo@um.es) Diego Sevilla, Gregorio Martınez ()Model-based QoE Analysis Interaccion 2013 September 14 / 16

Conclusion

CARIM ⇒ parameter-based metamodel

quantifies mobile user-system interaction

describes live surrounding context

includes cognitive state and quality ratings

CARIM ⇒ unified criteria to describe mobile interaction

comparison of QoE records; reuse of analysis tools

CARIM ⇒ run-time metamodel

live interaction + context → stepwise analysis; decision

CARIM ⇒ ratings + interaction → enhances QoE analysis

CARIM is not alone ⇒ integration framework + HCI extractor

Pedro Mateo (pedromateo@um.es) Diego Sevilla, Gregorio Martınez ()Model-based QoE Analysis Interaccion 2013 September 15 / 16

Acknowledgements

www.catedrasaes.org

Supported by:

cátedrasaeslabs

Pedro Mateo (pedromateo@um.es) Diego Sevilla, Gregorio Martınez ()Model-based QoE Analysis Interaccion 2013 September 16 / 16