The Context Modelling Toolkit: A Unified Multi-Layered Context Modelling Approach

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Sandra Trullemans Lars Van Holsbeeke Beat Signer The Context Modelling Toolkit: A Unified Multi-layered Context Modelling Approach Sandra.Trullemans@vub.be WEB & INFORMATION SYSTEMS ENGINEERING

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End User Control of Smart Homes End User

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Related Work Jigsaw – Humble et al. ICAP – Dey et al. Ghiani et al.

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IF situation THEN action IF THEN I Sleep IF THEN Message in meeting Situation Situation

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Where We Can do Better • Sensor-level knowledge required • Hard for complex situations • Trade-off between control and automation Collaboration Reusing Situations

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Multi-layered Modelling Approach End User Expert User Programmer

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Context Modelling + Reusing Situations Templates

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Reusing Situations IF THEN I Sleep IF THEN I Sleep Situation Situation

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Situation Rules IF THEN I Sleep IF THEN Situation Situation I Sleep

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Context Modelling + Reusing Situations Templates

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Templates IF THEN Someone is Sleeping A Time A Bed A Room A State Situation Expert User

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Filling In a Template IF THEN Someone is Sleeping A Time A Bed A Room A State 20:00 Her Bed Her Bedroom OFF End User

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Multi-Layered Context Modelling Facts Actions Situations Rules Tool Rule Templates Filled in Template Situations End User Expert User Programmer

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Context Modelling Toolkit - CMT Programmer

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Client-Server Interactions

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Creation of a Template Expert User

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The IF side of a Situation Rule Expert User

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A New Situation on the THEN side Expert User

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Filling In a Template End User

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Filling In a Template End User

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Reusing Templates End User

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Making Context Rules End User

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Lessons Learned • Importance of intelligibility

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Context Modelling Toolkit (CMT) End User Expert User Programmer Collaboration Reusing Situations

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References • Sandra Trullemans, Lars Van Holsbeeke and Beat Signer, The Context Modelling Toolkit: A Unified Multi-Layered Context Modelling Approach, Proceedings of the ACM on Human-Computer Interaction (PACMHCI), 1(1), June 2017, presented at EICS 2017, 9th ACM SIGCHI Symposium on Engineering Interactive Computing Systems, Lisbon, Portugal, June 2017 – http://beatsigner.com/publications/trullemans_EICS2017.pdf