ISWC 2006 5th International Semantic Web Conference
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Tutorials

Grobelnik, Mozetic (JSI), Witbrock (Cycorp), Hitzler, Haase (AIFB):
 "Context Sensitivity in Knowledge Rich Systems" (full day)


Sunday, November 5, 8 AM - 5 PM

Context sensitivity of applications is an important requirement for modern information and communication systems. The key improvement is adaptivity to the situations in which the system needs to react. This enables more efficient and robust functioning in dynamic environments. Therefore, identification and assignment of a context is a necessary factor to provide services and applications that are tailored to the user and the user’s current situation.

The main goal of this tutorial is to provide an extensive survey of the past and current work in the area of context related topics. This includes analysis of the past work: (1) defining the notion of “context”, (2) present logic-based formalisms for dealing with contexts, (3) present probabilistic/fuzzy approaches to model context, (4) demonstrate “modelling the context” and “reasoning with contexts” in real-life applications. In addition, the presented work we will provide a synthesis of the past work in the light of a unified categorization of context-related approaches along several dimensions which appear as relevant from theoretical and practical point of view (see outline for details).

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Grosof (MIT), Dean (BBN): "Semantic Web Rules with Ontologies, and
 their E-Services Applications"


Sunday, November 5, 8 AM - 5 PM

Rules are a main emerging area of the Semantic Web. There has been significant progress in just the last three years in several aspects of Semantic Web rules. This includes exciting developments in the underlying knowledge representation formalisms as well as advances in integration of rules with ontologies; translations between heterogeneous commercial rule engines; development of open-source tools for inferencing and interoperability; standards proposals and efforts (including RuleML, SWRL, Semantic Web Service Framework, and recently W3C Rule Interchange Format); proposals for rule-based semantic Web services; and pilot applications in the emerging area of e-services. This tutorial will provide an introduction to these developments and will explore techniques, applications, and challenges. We will also touch upon the issues of business value, adoption, investment, and strategy considerations.

Grau, Horrocks, Parsia, Sattler (Manchester), Patel-Schneider (Bell Labs): "Learning from the Masters: Understanding Ontologies found on the Web" (full day)

Sunday, November 5, 8 AM - 5 PM

OWL ontologies are now in use in areas as diverse as e-Science, medicine, biology, geography, astronomy, defence, and the automotive and aerospace industries (to name but a few). OWL is also the focus of much research into reasoning, language extensions, modeling techniques, and perhaps most importantly, tool support that makes these various extensions and techniques accessible to users. A wide range of tools is already available that make it significantly easier to work with ontologies. However, many people are not away of these new features, or just lack the experience to be able to use them successfully to navigate through a novel ontology with an eye to understanding it well enough to pick up useful tips and tricks, or even to understand it well enough, as a domain expert, to correct or otherwise modify it.

The purpose of this tutorial is to help attendees gain sufficient experience of working with OWL and tools to allow them to fruitfully explore new ontologies that they may encounter. In other words, they should be able to do the equivalent of “view source” on an ontology. Also, they will get better fluency in the use and abuse of OWL by examining features, limitations, and workarounds in real contexts, as well as gaining an understanding of the impact of future extensions of OWL, in particular of rules and the proposed revision of the language called OWL 1.1.

Katia Sycara and David Martin: "Tools and Technologies for Semantic Web Services: An OWL-S Perspective"

Monday, November 6, 1 PM - 5 PM

This tutorial will take an in-depth look at the current state of the art in Web Services and sort through the increasing and confusing array of relevant tools, languages and theories both from academia and industry. The tutorial will also present and discuss business models for Web services and their potential for business value added. Many examples to illustrate the described concepts, techniques, tools and their use will be presented. The tutorial will also discuss limitations of current technologies and present value added advanced concepts, such as distributed service composition, Semantic Web enabled Web services, agent-mediated Web services, as well as open issues that must be addressed with emphasis on agent researcher contributions.

The tutorial will have six parts. Part I will present a general brief overview of the concept of Web Services. Part II will present a critical survey of the most promising current industry standards. Part III will present limitations of current state of the art industry standards and present needed semantic infrastructure for value added. Part IV will present schemas/languages and ontologies for semantic description of Web services and semantic annotation of content of services so they can be agent-discoverable, invocable and composable. In particular, this part will focus on OWL-S. Part V will present OWL-S tools and applications. Part VI will present conclusions, challenges and open problems.

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LSDIS

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