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SMR2 Panel

Axel Polleres’ 3 cents

(in answer to 3 questions)

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• If

then

• Where’s SWSPARQL?

• Who needs/uses pre- and postconditions?

? ? ?

WSMOOWL-S SAWSDL WSDL

RIFOWL

RDFS XML

WSMX

Protégé

About 10 years after LARKS, and 6 after the first papers on Semantic Web service discovery, what did we learn? and what is still missing?

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Discovery has been envisioned as one of the main activities in SOA, indeed 2 of the 3 arcs in the SOA triangle are about

discovery. But is discovery really that important?

• Yes, discovery is needed as Search engines were needed to make the Web usable… but

• Is discovery needed for automated location or is discovery needed for support of the human developer only?

• If the latter: where are the convenient search engines for services? (not talking about WSDL services only here but also HTTP Get services! Shouldn’t it be possible to crawl them?)

• Yahoo Pipes are a first step for purely data-driven services:– Make it easy to republish, combine and mashup your/others discovered

“services”, I don’t see anybody publishing their BPEL’s for cool compositions they did on the Web.

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Are there new forms of discovery to address new forms of service? For example, how does discovery fit with Web 2.0 or with whatever you think Web 3.0 will be?

• If Web 2.0 was AJAX, Web 3.0 adds a social component…• Do we need to add this social component to SWS

(discovery)… • You are doing this (manually) already: Ask your friends for

recommendations which services they used/found useful

“social QoS”

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New challenges - summary:

• How can the Web help for highly dynamic scenarios (news much more recent on blogs than on official news channels)

• add the social component

• Create + PROMOTE lightweight service description vocabularies and ontologies!

• Think different (from LARKS, FIPA), etc. , be Web!

• … and BTW: I think SAWSDL is a great start

• … and BTW,BTW: Is there a way to bring SWSC and S3 together?