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Agents and the Semantic Web

Agents and the Semantic Web. Knowledge can be encoded on the Semantic Web Ontologies include: Dublin Core Hybrid iCal VCard Typically used for meta-data markup (e.g. RSS, Dublin Core) semantic query (e.g. Squish Query Language) Can be utilized by agents to assist users

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Agents and the Semantic Web

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  1. Agents and the Semantic Web • Knowledge can be encoded on the Semantic Web • Ontologies include: • Dublin Core • Hybrid iCal • VCard • Typically used for • meta-data markup (e.g. RSS, Dublin Core) • semantic query (e.g. Squish Query Language) • Can be utilized by agents to assist users • Generate reminders of upcoming registration or submission deadlines • Perform tasks such as booking a flight to a conference

  2. Events on the Semantic Web • Calendars, Schedules and Events can be represented in RDF • Events have several properties, including: • Time / Duration • Attendee Information • Location • Description • Event concepts can refer to existing concepts on the SW • Reuse of semantic information supports reasoning and inference • Interoperability possible between different ontologies • E.g. VCard, DAML-ITTalks & FOAF ontologies • Supports markup of reminders and recurring events • E.g. Class Schedules!

  3. Marking up Events and People in RDF

  4. Winner Semantic Web Working Symposium 2001 Challenge Retsina Semantic Web Calendar Agent Terry R. Payne, Rahul Singh & Katia Sycara • CMU Response to SWWS2001 Challenge “Import RDF Schedules into Outlook” • Parses RDF Schedules • Based on Hybrid iCal Ontology • Libby Miller (Bristol, UK) • Michael Arick (UC Santa Cruz) • Outlook-Agent integration • RDF Schedules in to Outlook • using OLE Automation http://www.daml.ri.cmu.edu/Cal

  5. Retsina Semantic Web Calendar Agent • Allows user to browse SW schedules & events • Displays event, location and attendee information • Supports additional actions based on available information • E.g. email or visit web page if information is available • Supports serendipitous exploration • Uses agent discovery (DAML-S) to locate context dependent agents • Imports schedules into MS Outlook • User can select schedules to import into Outlook Calendar • Can receive KQML requests to autonomously import schedule without invoking browser http://www.daml.ri.cmu.edu/Cal

  6. Retsina Semantic Web Calendar Agent

  7. Supporting Distributed Meeting Scheduling • Schedules can be: • Browsed and imported by user • Shared and imported autonomously by agents • Assists users in keeping calendar “up-to-date” • Higher fidelity model of user’s schedule • Minimal cost on the user’s time • Supports meeting scheduling • Calendar Agents negotiate possible meeting times based on user’s schedule and preferences

  8. Importing Schedules into MS Outlook

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