Providing user support in Web-of-Things enabled Smart Spaces

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The slides that I have presented at the 2nd International workshop of the Web of Things. They describe the paper entitled "Providing user support in Web-of-Things enabled Smart Spaces" that has been accepted to this workshop.

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Providing user support in Web-of-Things enabled Smart Spaces

  1. 1. Providing user support in Web-of-Thingsenabled Smart SpacesMathieu Boussard, Olivier Le Berre, Benoit Christophe, Vincent ToubianaBell Labs Research – Alcatel-Lucent Bell Labs France COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  2. 2. Overview• Enabling WOT-based smart spaces• Searching Web-enabled objects• Navigating smart spaces• Conclusion COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  3. 3. Enabling WOT-based smart spaces COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  4. 4. Enabling WOT-based smart spacesDefining and interconnecting spaces A localized space Interconnecting spaces COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  5. 5. Enabling WOT-based smart spacesMaking a space to become ‘smart’ with Web-enabled objects REST APIA real-worldobject (RWO) ‘smart’ home A virtual object (VO) COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  6. 6. Enabling WOT-based smart spaces Prototype developed ‘smart’ home VO Gateway: Home ‘smart’ officeVO Gateway: Office Virtual Objects 5, Get WebCam HTML Representation 4’ and display 6, HTML + JavaScript (HTML) 3’ Exposure (REST) 4, 3, Sen Ge dV tV OU Os 8,L RL Lis Semantic is t s t 2. Send GWs of interest: Description of Ob (OWL) jec {Local: Home, tt oc 1. Get List GWs om po 7, Sea Bookmarked: {Office}} se rch wit com (location, User ID) h the Virtual Objects Framework po We sab bca le m ob Search jec ts filter VO Provisioning Persistency Eventing Gateway GW Filtering Geo filter Central Reasoner Resolver User filter Reasoner Registerer sit ion Se nd po live; GW A. Ke ep-A OSGi Framework Repository COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  7. 7. Enabling WOT-based smart spacesPrototype developed – Virtual Objects Framework Main components • Provisioning module • Assign a URL to each VO (e.g. http://<smartspaceXYZ>/vo/<uuid>) • Based on an OSGi service (called VirtualObject) implemented by each VO • Enabling VO to be monitored (start/stop) • Allowing to keep up to date running VOs • Allowing to access/expose/update VO attributes • Eventing module • Based on an OSGi service (called NotificationEngineService) • Using an event channel and a producer/consumer paradigm • VOs can subscribe to events and are notified by this module once one appears in the channel • Implementation relies on Comet long poll mechanism COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  8. 8. Enabling WOT-based smart spacesPrototype developed – Virtual Objects Framework • Reasoner module • Based on Semantic engine tools (e.g. Pellet) • Allowing VO to be discovered according to their semantics • Involved in two different steps • When a VO joins a smart space • Build a processable graph from its semantic profile • Establish similarities with virtual objects already part of this smart space • When a discovery request is sent • Analyze requirements of this request • Compute a ‘requirements graph’ • Compare requirements graph and VO graphs to discover similarities and return corresponding VO URLs. COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  9. 9. Enabling WOT-based smart spacesPrototype developed – Gateway Resolver Main component • Gateway Repository • Maintaining the list of running VO Frameworks • Based on a RESTful API • Allowing VO Gateways to register/unregister when they start/stop • Allowing clients to get filtered smart spaces according to their requirements (e.g. looking for all smart spaces in a radius of 2 kilometers at a given location) COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  10. 10. Searching Web-enabled objects COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  11. 11. Searching Web-enabled objectsOur current object description model: 5 lightweight ontology files• vo-fsm represents finite state machine of a Web-enabled object• vo-structures allows object to tell how are structured the data it uses or generates• vo-capability allows to map a task with a set of functionalities• vo-location represents geographical areas and how they are relatively localized• vo-core interlinks all different models and form the description model of Web-enabled objects Description file of a connected object instantiates ‘vo-core’ model COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  12. 12. Searching Web-enabled objectsUsing semantic profiles for searching objects • From the incoming discovery request: • Extract requirements of a request • Translate each requirement to a graph α WA=1 A WB=5/11 WC=5/11 α1,α2 ,...,αn B C R WD=3/11 D E F G H I J K WG=1/11 Number of nodes = 11 N total number of nodes 1 Dn W n D n all descendants of node n N D(root) 1 COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  13. 13. Searching Web-enabled objectsUsing semantic profiles for searching objects • From a set of Web-enabled objects that belong to a given smart space: • Access semantic representation of object’ functionalities • Navigate to the ontological definition of their I/Os • Extract the graph of each I/O Send stream functionality o1 i1 o1 i2 o2 i3 COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  14. 14. Searching Web-enabled objectsMatching requirements with structures using graph comparisons• Finally, match request requirements with structures uses or generated by an object A B C D E F G H I J K 1: load requirement graph 2: Lookup graphs Graph analyzer module Lookup set of object graphs (Who has ‘A’, Who has ‘B’, etc.) Compute matching score Ex: Webcam has ‘B’ and ‘G’ while copier has ‘D’ and ‘I’ matching(α, camera) = 6/11 matching(α, copier) = 4/11 3: return classified results Results = {(camera, 55%); (copier,36%)} COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  15. 15. Navigating smart spaces COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  16. 16. Navigating smart spaces Different interfaces for different browsing situations* In-situation Off-Situation* M. Boussard, P. Thebault, Navigating the web of things: visualizing and interacting with web-enabled objectsISoLA’10 Proceedings of the 4th International conference on Leveraging applications of formal methods, verification, and validation COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  17. 17. Navigating smart spacesDifferent interfaces for different usages • Accessing object functionalities • Composing an object with another one • Accessing template of an application to configure it COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  18. 18. Navigating smart spacesWhy not using legacy Mobile Web browsers?• Although VO and applications rendering being based on HTML, problems arise when using legacy browsers to search for meaningful objects: • To compose objects, we need to know (at least) who is requesting a composition • BUT: the HTML representation contains semantic annotations (RDFa) of only functional elements • Issuing an AJAX request from a legacy browser would then lead to wrong results • We then have implemented a dedicated WoT browser on mobile (target was Android) • Requesting user authentication • Displaying object representation in a Web view • Issuing composition request through a javascript hook between the Web view and the client itself COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  19. 19. Conclusion COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  20. 20. ConclusionsNavigating and supporting the user: many opportunities Novel interactions New web applications + = COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  21. 21. Thanks Benoit Christophebenoit.christophe@alcatel-lucent.com Paper available here COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  22. 22. 22 COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED.ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
  23. 23. 23 COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED.ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION

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