Download Vision: Semantic Routing

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