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Multi-Fidelity User Interface Specifications

Multi-Fidelity User Interface Specifications. Thomas Memmel 1 , Jean Vanderdonckt 2 , Harald Reiterer 1 1 Human-Computer Interaction Group, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany http://hci.uni-konstanz.de 2 Université catholique de Louvain (UCL)

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Multi-Fidelity User Interface Specifications

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  1. Multi-Fidelity User Interface Specifications Thomas Memmel1, Jean Vanderdonckt2, Harald Reiterer1 1Human-Computer Interaction Group, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germanyhttp://hci.uni-konstanz.de 2Université catholique de Louvain (UCL) Louvain School of Management (LSM) - Information Systems Unit (ISYS) Belgian Laboratory of Computer-Human Interaction (BCHI) http://www.isys.ucl.ac.be/bchi

  2. Challanges of UI Specification Zetie 2005 • Different disciplines, speaking different languages • Separation of concerns (client & supplier) • Media disruptions, loss of precision, ambiguity • Lots of systems lack UI quality (usability, user experience) failure

  3. UI Specification Is Not A Linear Proces • Creating innovative interactive products requires • Leaping between abstract and detail • Designing design alternatives • Keeping the design space open as long as possible From: Löwgren & Stolterman 2004, Thoughtful Interaction Design

  4. Responsibility Assignment in Corporate Projects

  5. Corporate UI Development Process • Current Situation • Media disruptions • Text-basedartifacts • Document-basedrequirementsmanagement • Lack oftraceability • Difficulttotranslateinto UI • Intransparent • Ambiguous Client Client IT Supplier IT Supplier • Required Change • Usability strategicfactor • UE must not beoutsourced • Early prototyping • Rapid feedback • Corporate Design • Specification incl. Design • Save rationale & artifactselectr. Prototyping-Driven UI Specification

  6. Prototyping for everybody: Comm. Tools iRise Axure

  7. Related Work Canon & Task Sketch Denim/Damsk

  8. Bringing it all together • Provide shared means of communication to support collaboration of different disciplines • Identify a common denominator • Overcome limitations of text-based work-style • Provide something tangible and interactive • Determine ingredients of UI specification • Support switching between abstract and detail (multi-fidelity) • Provide traceability and transparency • Save design rationale

  9. Interactive UI Specification Explained

  10. Model-driven vs. Model-based • Model-driven UI specification • Uses formal, predefined models • Allows code generation directly from models • Very suitable for straight forward design solutions or when design space is constrained • Model-based UI specification • Is based on models, but no need to code generation • Models visualize requirements • More appropriate when innovation is required and disciplines must be bridged

  11. Level of abstraction: Text to UI design Define a common denominator for interdisciplinary UI modelling (Bridge the gaps) Mayhew, Rosson & Caroll, Constantine Constantine, Ambler, Beck Holt, Ambler New Research

  12. Zooming through Levels of Abstraction Drawing is based on Garrett, Jesse J. (2002). The Elements of User Experience: User-Centered Design for the Web. New Riders Press.

  13. Evaluation • Interviews (n=7): Very positive feedback; experts expect improvement of work style through multi-fidelity approach • Long-term diary study (4 weeks; n=8) • Rapid enhancement of tool usability (1.75 to 4.25) • Incorporated „contextual layer“ • Support masters/templates, creation of patterns • Versioning of specification objects (design rationale) • Annotation support, defect management console • Ongoing expert interviews (e.g. SIEMENS AG)

  14. Future Work: Collaboration

  15. Summary Towards a common denominator for UI-related modeling in non-IT organizations Include business process modeling in research on bridging in the gaps Idea of interactive UI specifications Situation-dependant alternative to model-driven UI specification methods Experimental tool-support to encourage collaboration and creativity

  16. Thank you very much for your attention http://hci.uni-konstanz.de/INSPECTOR Website of INSPECTOR method & tool http://www.irise.com The iRiseprototyping and specificationtool http://www.axure.com The Axure Pro prototyping and specificationtool http://www.usixml.org User Interface eXtensibleMarkupLanguage

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