 Copyright 2005 Digital Enterprise Research Institute. All rights reserved. Triple Spaces for an Ubiquitous Web of Services Reto Krummenacher, Thomas Strang, Dieter Fensel Reto Krummenacher W3C Workshop on the Ubiquitous Web, Tokyo, March

2 1.Why Triple Space Computing? 2.υbiquitous Triple Space Computing ( υ TSC) 3.Discussion of 5 position arguments 4.Outlook and conclusion Overview

3 Human Communication

4 Publish and Read Paradigm The WWW only scaled to its current size because it uses persistent publication as the communication paradigm. Example ( Michael C. Jensen (Harvard Business School) – 217,725 downloads since 1994, – 27‘307 for a single publication (July 19, 1998 – Nov 9, 2005) Michael C. Jensen needed to write 10 mails a day for that one paper (55 for all publications together)

5 1.Why Triple Space Computing? 2.υbiquitous Triple Space Computing ( υ TSC) 3.Discussion of 5 position arguments 4.Outlook and conclusion Overview

6 Triple Spaces embody a communication paradigm for anonymous, asynchronous information exchange through publication that ensures the persistency and unique identification (URI) of the communicated semantic data. Dieter Fensel, Triple-Space Computing: Semantic Web Services Based on Persistent Publication of Information, Proc. of the IFIP Int'l Conf. on Intelligence in Communication Systems, November Triple Space Computing (TSC)

7 TSC and υ TSC Alice Bob Location Building Managment User Profile Conference Registration

8 TSC and υ TSC Alice Bob Location Building Managment User Profile Conference Registration Triple Space

9 TSC: conceptual architecture TripCom: EC funded project (april 2006 – march 2009) TSC: Austrian funded project (march 2005 – august 2007) TS Kernel

10 TSC: kernel architecture write, read, take, query, update, subscribe, advertise based on URIs Templates (cf. SPARQL, N3QL) Named Graphs

11 1.Why Triple Space Computing? 2.υbiquitous Triple Space Computing ( υ TSC) 3.Discussion of 5 position arguments 4.Outlook and conclusion Overview

12 1)Merging Ubiquitous computing and Web computing: Ubiquitous Web = Ubiquitous computing + Web computing = mobility + adaptivity ∩ scalability + global coverage Position arguments

13 Position arguments 2) The Web around (Semantic) Web services: Semantic Web services will be at the core of the processing of vast amounts of heterogeneous pieces of information.

14 Position arguments 3)Context-awareness: - No Ubiquitous computing without context-awareness! - Ontology-based context modeling - Context Ontology Language (CoOL) - Taking context information into account allows for optimized service to users and applications. - “Not only functionality, but also availability”

15 Position arguments 4)A Web for machines: Ubiquitous Web = WWW as Web for humans + TSC as a web for machines = A presentation web + a computation web = globally accessible and highly scalable networks

16 Position arguments 5)A flexible coordination paradigm for machines and humans: A middleware that takes over coordination, mediation, and basic reasoning tasks. The Ubiquitous Web to fast and flexibly integrate information producers and consumers.

17 1.Why Triple Space Computing? 2.υbiquitous Triple Space Computing ( υ TSC) 3.Discussion of 5 position arguments 4.Outlook and conclusion Overview

18 Ubiquitous Web at the convergence of humans’ and machines’ information processing Current WWW tailored to human use Machines will and have to catch up Outlook and Conclusion Semantic Web services at the beginning Triple Space Computing even more …

19 2nd Int‘l Workshop on Location- and Context-Awareness (LoCA) in cooperation with Pervasive‘ May 2006 IBM Dublin Personal Notes

20 9th Int’l Conference on Ubiquitous Computing (UbiComp 2007) Sept 2007 in Innsbruck, Austria Personal Notes

21 Thank you.