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. Retsina Semantic Web Calendar Agent 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 Terry R. Payne, Rahul Singh & Katia Sycara Winner Semantic Web Working Symposium 2001 Challenge

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