1. Brussels, 04 March 2004Workshop „New Communication Paradigms for 2020“ Semantic Routing, Service Discovery and Service Composition Gregor Erbach German Research Center for Artificial Intelligence Language Technology Lab Saarbrücken, Germany www.dfki.de/lt/

2. Brussels, 04 March 2004Workshop „New Communication Paradigms for 2020“ Vision: Semantic Routing User makes a request, e.g. “I need to from Berlin to Brussels tomorrow, arrive by 10 a.m., and spend max. 250 Euro” User need not –choose a device (e.g. phone, PDA, PC) –choose a service (e.g. voice, e-mail, SMS) –choose a network or protocol (internet, PSTN, GSM) –specify a destination (phone number, URL) –decompose the request (find information, book, pay) –consider alternatives (air, train, bus) –find a service provider (travel agent, booking site)

3. Brussels, 04 March 2004Workshop „New Communication Paradigms for 2020“ Objectives Request is picked up by a networked sensor (room microphone, multimodal interface, „intelligent dialtone“) Request is tagged semantically –attributes: sender, contents, context, constraints Based on its semantic tag, request is routed to a service provider (IT system or human) –capabilities of service providers must be formally described Initial service provider may decompose request and issue requests to other service providers recursively Service provider given response to request

4. Brussels, 04 March 2004Workshop „New Communication Paradigms for 2020“ Challenges and Enabling Technologies Semantic tagging of requests –Artificial Intelligence, Natural Language Processing, Speech Understanding, Ambient Intelligence Formal semantic description of service providers –Semantic web (RDF/OWL), web service discovery (WSDL) Semantic routing of requests and responses; overlay semantic network over physical infrastructure –Content-addressable networks, peer-to-peer communication Request decomposition and service composition –Agent-based computing, grid computing, AI planning methods Trust and Security –Social networks, rating, reputation, cryptography