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This workshop explores the rationale and goals of supporting the design and development of multi-target applications, with a focus on expressing context-dependent information in models and developing adaptive interfaces. It discusses task-related issues, presents a reference framework (TERESA), and showcases examples and techniques for designing multi-platform applications.
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Visual Model-based Design of Multi-platform Interactive Applications HCI Group/ISTI-CNR 23 September 2002 Pisa (I)
Rationale • Ever-increasing introduction of new types of interactive devices • Applications often need to be accessed through different interactive devices • How to support designers and developers? • How to obtain interfaces able to adapt to different targets while preserving usability? EUD-Net Workshop, Pisa, September 22nd 2002
Goals • Express context-dependent information in a set of models that can be used at design-time and run-time • Develop tools using information contained in the models to drive the design and development of usable interfaces for multi-target applications • Techniques/components supporting development of adaptive/context-dependent applications • Address some case studies for validating the methods, techniques and tools EUD-Net Workshop, Pisa, September 22nd 2002
Task –related issues in multiplatform applications • Same task on multiple platforms in the same manner • Tasks meaningful only on a single platform type • Dependencies among tasks performed on different platforms • Same task on multiple platforms but performed in different manner EUD-Net Workshop, Pisa, September 22nd 2002
One model, many interfaces EUD-Net Workshop, Pisa, September 22nd 2002
TERESA in the Reference Framework EUD-Net Workshop, Pisa, September 22nd 2002
Filter + Refine The Method Task model for envisioned nomadic applications … System task model – cellphone (XML) System task model – desktop (XML) System task model (pda) (XML) Abstract UI – cellphone (XML) Abstract UI – desktop (XML) Abstract UI – Pda (XML) Openwave … Nokia (WML,XHTML Mobile, VoiceXML, …) Multimedia PC Graphical PCLow res PC ( HTML, …) Palm … Compaq EUD-Net Workshop, Pisa, September 22nd 2002
Related Work • The User Interface Markup Language (UIML) (http://www.uiml.org/). Mainly developed by Harmonia and Virginia Tech. • The Abstract User Interface Markup Language (AUIML) is an XML vocabulary designed to allow the intent of an interaction with a user to be defined. This work has mainly been carried out at IBM. • The eXtensible Interface Markup Language (XIML) (http://www.ximl.org/) is an extensible XML specification language for multiple facets of multiple models in a model-based approach. This is developed by a forum driven by RedWhale software (HP and Applied materials). EUD-Net Workshop, Pisa, September 22nd 2002
Structure of the language for abstract user interfaces Interface Presentation+ Structure Connection? aio Interaction_aio_name aio_composition presentation_aio_name interaction_aio application_aio operator 1st_expression+ 2nd_expression? sub_presentation sub_presentation selection_aio edit_aio text_aio graphic_aio name control_aio single_choice_aio multiple_choice_aio+ text_edit_aio graphic_edit_aio aio aio_composition singlechoice_low_card_aio+ singlechoice_medium_card_aio+ singlechoice_high_card_aio+ multiplechoice_low_card_aio+ multiplechoice_medium_card_aio+ multiplechoice_high_card_aio+ EUD-Net Workshop, Pisa, September 22nd 2002
Composition operators • Grouping (G) • Relation (R) • Ordering (O) • Hierarchy (H) EUD-Net Workshop, Pisa, September 22nd 2002
WML XHTML Mobile Xml spec of CTT task model Xml spec of Enabled Task Sets XHTML Abstract User Interface . . . Xml spec of operators & abstract interactors TERESA XML Transformation Environment for inteRactivE Systems representAtions EUD-Net Workshop, Pisa, September 22nd 2002
Current TERESA layout EUD-Net Workshop, Pisa, September 22nd 2002
Filtering the model EUD-Net Workshop, Pisa, September 22nd 2002
XML AIU language EUD-Net Workshop, Pisa, September 22nd 2002
Initial layout for the prototyping phase EUD-Net Workshop, Pisa, September 22nd 2002
Defining implementation of composition operators EUD-Net Workshop, Pisa, September 22nd 2002
Changing design decisions EUD-Net Workshop, Pisa, September 22nd 2002
Summary of the design decision EUD-Net Workshop, Pisa, September 22nd 2002
Example of phone presentation EUD-Net Workshop, Pisa, September 22nd 2002
Example of desktop presentation EUD-Net Workshop, Pisa, September 22nd 2002
From system task model to abstract user interface • Shift from task to abstract interaction objects: • Calculation of enable task sets • Heuristics for optimization in terms of presentation sets and transitions • Mapping presentation task sets into sets of abstract interaction objects and dialogue EUD-Net Workshop, Pisa, September 22nd 2002