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Enhancing Smart Space Adaptation through Multi-Design Approaches

This seminar presentation discusses "Multi-Design" as a framework for self-adaptation in smart spaces, focusing on integrating cyber-physical services with contextual user preferences. It explores the dynamic nature of system designs that enable multiple adaptations based on the presence of different users. The seminar covers advanced middleware techniques that facilitate the sharing of design artifacts, coordination of services, and resolution mechanisms to manage user conflicts. Applications span from public spaces to private homes, emphasizing energy management, safety, and personal comfort.

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Enhancing Smart Space Adaptation through Multi-Design Approaches

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  1. Multi-Design:designing self-adaptation of smart space features João Pedro Sousa George Mason University USA Dagstuhl Seminar 10431―Oct 24-29, 2010 • Software Eng for Self-adaptive Systems

  2. situate the workwhat adaptation footprint context- aware phone ring app w/ config file multi-Design Rainbow multi-Design Rainbow multi-Design SASSY SASSY SASSY SASSY automated MDD self-mod code SASSY

  3. smart spacesmerge computing and physical world • spaces • public streets, train stations • organizational buildings, buses • private homes, cars • apps • safety and surveillance • energy management • health & assisted living • work & entertainment anywhere • …

  4. smart spacesmerge computing and physical world • spaces • public streets, train stations • organizational buildings, buses • private homes, cars • users • move between spaces • bring expectations aka reqs • features, QoS

  5. this talkmulti-Design • multi-Design: • system may adoptmultiple designsdepending on which users are present • multi-user design: • one design for multiple users • self-adaptation stems from • sharing of cyber-physical services • explicit intentions in design artifacts

  6. design notations w/ complete semanticsfully automated deployment • users deploy and retire design artifacts at will middleware middleware • middleware • takes design artifacts as input • discovers and briefs/coordinates the required services • spatial constraints in the design guide discovery

  7. expectations of mobile userscaptured as design artifacts • set of available design artifacts change as users come and go middleware middleware

  8. users share physical spacesand the services deployed therein • set of available design artifacts change as users come and go middleware middleware purely software services can be replicated and sandboxed offering each user a logically separate systemeven if deployed on the same device(s)

  9. multi-design design of a situated systemrun-time view: which components it includes and how they are interconnectedchanges with the designs users bring to a space and decide to deploy • set of available design artifactschange as users come and go middleware middleware • cyber-physical services may be logicallyshared among users • multi-touch table • thermostat next slide

  10. logical sharing of servicesmay result in conflicting settings SASSY a relative of BPMN • users may create designs to set the thermostat in each space • Bob prefers 72ºF, Fred prefers 68ºF • other examples: TV channel, music volume, any numeric setting • what should happen when Bob and Fred are present?

  11. approach:promote resolution mechanisms to design levelso that stakeholders may change policies at will (c) Schema made by the stakeholders at a specific space SASSY a relative of BPMN setTemp setTemp t:thermostat ask O S LM rem default default • space stakeholdersdefine resolution policy for accessing shared service(s) • access: authorized, open • multiplexing: exclusive, shared • resolution : fcfs, priority, least misery,…

  12. track(Fred) track(Bob) approach:promote resolution mechanisms to design levelso that stakeholders may change policies at will heating @ anywhere • @.. set thermostat set leave heating @ anywhere TeC – a relative of spreadsheets • @.. pref thermostat set • space stakeholdersdefine resolution rules for accessing shared service(s) • principles are transferrable to different design notations

  13. outlineself- adaptation in multi-Design context- aware phone ring multi-Design Rainbow multi-Design Rainbow multi-Design SASSY SASSY SASSY SASSY automated MDD self-mod code SASSY

  14. track(Bob) dry self-adaptationcaptured in a design artifact • control deployment of sub-systems • start • stop save energy @ Bob.org/home @../laundry • save@../electric drying save smart meter pricey pause started cheap done resume • a smart power meter at Bob’s home issues pricing signals • Bob wants clothes dryer to suspend drying during high rates • and to resume only when night rates are in effect • Bob’s wife would like to have her clothes dry regardless

  15. in summarymulti-Design • self-adaptation of cyber-physical SOA systems • system goals: dynamic, temporary, multiple, possibly conflicting • adaptation triggers: functional, foreseeable • mechanisms: assisted by middleware • structural: merging of systems, start and stop subsystems • parametric: conflict resolution • effects: mission-critical, safety-critical • applicable to a variety of design notations • SASSY – relative of BPMN – for domain experts • TeC – relative of spreadsheets – for end users

  16. questions

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