· Integration of Semantic Web Services and Grid technologies - challenges and implications
Presenter: Radek Wegrowski
Dates:      Wednesday, 14 September 2005
Time:       14:00 Galway time
Location:  The presentation will be by videolink in Room 115, DERI, Galway from DERI, Innsbruck

Abstract
Grid Computing offers technologies that enable coordinated resource sharing and problem solving between distributed entities. The last few years have proved the ability to incorporate Service Oriented Architecture into the Grid. The Open Grid Service Architecture (OGSA) has changed the philosophy of utilizing resources by grid applications, thus showing its convergence with web services standards. However, the actual state of the grid is still lacking the infrastructure to allow the machine processable semantics to make use of the grid services. The latest WS-Resource Framework specification (a refactoring of OGSI) has made a step forward to help integrate Semantic Web Services and Grid Services.
In my presentation I will introduce the Grid concept, its correlation and similarities with Semantic Web and Semantic Web Services, as well as the challenges and implications of SWS and Grid integration.

Bio: Radek Wegrowski
Software Developer
Comarch SA
Cracow, Poland
www.comarch.com

Radek holds a double MSc degree in Computer Science and in Economics, both procured at the Karol Adamiecki University of Economics in Katowice. Since April 2004 he has been working for Comarch SA (Poland) on the position of a software developer. During his work for the company he has been responsible for design and development issues of The EGERIA Financial-Accounting System implemented for The Polish Agricultural Market Agency (modules: HRM, Payment Regisrtation, EAGGF Reporting and Accountancy). He has been also involved in the Oracle 9i database administration duties (He holds an Oracle Database Administration Certificate).
In his research interests area he has been focusing on the Semantic Web Services and Grid technologies. He sees the future of wide-spread semantic grid services and the notion of innumerable applications operating on them.




· SweetRules - An Integrated Set of tools for Semantic Web Rules and Ontologies
Presenter: Benjamin Grosof, MIT Sloan School of Management
Dates:      Tuesday, 7 June 2005
Time:       13:00 Galway time
Location:  The presentation will be by videolink in Room 115, DERI, Galway from DERI, Innsbruck

Abstract
The seminar will deal with SweetRules which is an integrated set of tools for semantic web rules and ontologies, revolving around RuleML (Rule Markup/Modeling Language), a rule language for the Semantic Web. SweetRules is implemented in Java and it supports also SWRL (Semantic Web Rule Language), along with the OWL standard for semantic web ontologies. (c.f. http://sweetrules.projects.semwebcentral.org/)  

Bio: Benjamin Grosof
Benjamin Grosof is Assistant Professor in Information Technology at the MIT Sloan School of Management in Cambridge, Massachusetts. Before that, he was a senior research scientist at IBM T.J. Watson Research Center. He is the pioneer of inter-operable XML business rules and he co-leads the RuleML emerging industry standards effort. He designed and leads the SweetRules open source software community platform toolkit for semantic web rules.




· SOC4DIBPM - Supporting XO Business Processes the Flexible Way
Presenter: Professor Paul Grefen of the Eindhoven University of Technology
Dates: 17 May 2005
Time: 11:00 Galway (12:00 Innsbruck)
Location: DERI, NUI, Galway videolink to DERI, University of Innsbruck

Abstract
Service-oriented computing (SOC) technology is considered one of the promising technologies for business-to-business (B2B) integration in the e-business arena. The basic SOC paradigm, however, is more geared towards the support of business functions than towards the support for complex, inter-organizational business process in dynamic e-business settings. In this presentation, we analyze the requirements for the support of business processes and put these in the context of existing SOC technology. We describe an application of SOC technology providing dedicated support for dynamic business process management across the boundaries of (autonomous) organizations. The combination of SOC technology and workflow management (WFM) technology provides the basis for full-fledged dynamic inter-organizational business process management. We conclude that the current state of the art does not yet provide an integrated solution, but that many ingredients are available or under development. In the end of the presentation, we give an overview of various research efforts in which we currently participate and place them in the context of the framework discussed before.
 

Bio: Prof.dr.ir. Paul Grefen
Paul Grefen is a full professor in the Department of Technology Management at Eindhoven University of Technology, where he leads the ICT Architectures group. From 1992 until 2003, he held assistant and associate professor positions in the Information Systems and Database Groups of the Computer Science Department at the University of Twente. He received his Ph.D. in 1992 from the University of Twente on the subject of integrity control in parallel database systems. He was a visiting researcher at Stanford University in 1994. From 1995 to 1999, he was involved in the WIDE ESPRIT project, which focused on advanced database support for workflow management systems. From 1998 to 2000, he was involved in the CrossFlow ESPRIT project, which aimed at the development of cross-organizational workflow support for dynamic virtual enterprises. He has been a member of the program committees of a large number of international conferences and a regular reviewer for several international journals. He was main editor of the book on the WIDE project and has published a book on workflow management. His current research interests include architectural design of complex information systems, high-level transaction management, advanced workflow management, and contract support in electronic business.


· Semantic Web Services Cluster Research Seminar

Presenters: All student members of the SWS Cluster
Dates: 14 and 16 February 2005
Time: All Day
Location: DERI, NUI, Galway videolink to DERI, University of Innsbruck

Description
This is one of a series of research seminars for the Semantic Web Services cluster. The seminars gives research students the opportunity to present and discuss their work with their peers. Overall, the seminars raise the visibility of the research being undertaken within the SWS cluster.

Details
The list of presentations and their authors along with the powerpoint files containing the presentation slides are available at the DERI publications.presentations page.



· Web Services Composition Languages: Old Wine in New Bottles?
Presenter: Prof.dr.ir.Wil van der Aalst, Technische Universiteit Eindhoven
Dates: 20 December 2004
Time: 14:00 GMT, 15:30 GMT
Location: DERI, NUI, Galway videolink to DERI, University of Innsbruck

Abstract
The recently released Business Process Execution Language for Web Services (BPEL4WS) is said to combine the best of other standards for web services composition such as WSFL from IBM and XLANG of Microsoft. BPEL4WS allows for a mixture of block structured and graph structured process models thus making the language expressive at the price of being complex. Although BPEL4WS is not such a bad proposal by itself, it is remarkable how much attention this standard receives while the more fundamental issues and problems such as semantics, expressiveness, and adequacy do not get the attention they deserve. Having a standard is a very good idea. However, there are too many of them and most of them die before becoming mature. A simple indicator of this development is the increasing length of acronyms: PDL, XPDL, BPSS, EDOC, BPML, WSDL, WSCI, ebXML, and BPEL4WS are just some of the acronyms referring to various standards in the domain. Another problem is that these languages typically have no clearly defined semantics. The only way to overcome these problems is to critically evaluate the so-called standards for web services composition, and learn from 25 years of experiences in the workflow/office automation domain.

This talk will focus on the use of workflow patterns to evaluate standards and tools. In addition it will discuss a new language - YAWL (Yet Another Workflow Language) -inspired by these patterns.
 

Bio: Prof.dr.ir.Wil van der Aalst

Prof.dr.ir.Wil van der Aalst is a full professor of Information Systems and head of the Information Systems sub-department of the department of Technology Management at the Technische Universiteit Eindhoven. He is also an adjunct professor at the Faculty of Information Technology of Queensland University of Technology. He holds an MSc in Computing Science (1988) and a PhD in Mathematics (1992) awarded by the Technische Universiteit Eindhoven. From 1992 until 1999 he worked as an assistant/associate professor for the department of Mathematics and Computing Science at the Technische Universiteit Eindhoven, where he supervised the SMIS research group from 1996 until 1999. From 1993-1998 he also worked as a part-time consultant for Bakkenist. He has been a visiting professor to several universities including the Universitt Karlsruhe (5 months), the University of Georgia (5 months), the University of Colorado (8 months), and Queensland University of Technology (3 months). Wil van der Aalst directs the Eindhoven Digital Laboratory for Business Processes (EDL-BP) and is a fellow and management team member of the research institute BETA. His research interests include business process management, information systems, simulation, Petri nets, process models, workflow management systems, process mining, verification techniques, enterprise resource planning systems, computer supported cooperative work, and interorganizational business processes. He published more than 200 books, journal papers, book chapters, conference papers, and reports on these topics.




· Service Portfolio Measurement — A Framework for Evaluating the Financial Consequences of Out-tasking Decisions

Presenters: Dr. Jan vom Brocke, Maik A. Lindner, European Research Center for Information Systems (ERCIS)
Dates: 29 November 2004
Time: 14:00 GMT, 15:30 GMT
Location: DERI, NUI, Galway videolink to DERI, University of Innsbruck

Abstract
Topical developments in software-engineering facilitate the establishment of new design patterns for information systems. In Service-Oriented Architectures (SOA), processes of an information system can be extracted and “out-tasked” to service providers. KEEN/MCDONALD highlight the changes that are brought about by such an architecture with their statement „Out-tasking […] breaks a company into a portfolio of process-centered operations rather than interlocking departments or functions.” Examples of technologies that have been developed for this purpose are COM+, CORBA und RMI. With the initiative of Enterprise Application Integration (EAI), web-services turn out in practice to enable a widely spread realization of SOA.

With these technological achievements, new management tasks are arising in information systems science. As information systems are increasingly interlinked with other systems by various service providers, it is important to choose the appropriate composition of a corporate service portfolio. For this purpose, the long-term economic consequences of out-tasking decisions have to be taken into account. We suggest a methodological framework for efficiency calculations that intends to suit for a proper evaluation of these consequences. Due to the long-term consequences of information systems design, methods of capital budgeting are applied in the framework. Using Financial Plans (VOFI), all payments driven by a decision can be taken into account, including various conditions for funding and loaning as well as taxes. We apply this method by analyzing typical in- and out-payments driven by outtasking decisions that have to be taken into account throughout the life-cycle of serviceoriented information systems.

For evaluation purposes, efficiency measures need to be calculated. These measures indicate which composition of the service portfolio is most profitable in a certain corporate situation. We will demonstrate how to calculate the Total Cost of Ownership (TCO) as well as the Return on Investment (ROI) of a Service Portfolio on the basis of capital budgeting. Finally, perspectives will be discussed for applying and extending the framework for Service Portfolio Measurement.

Bios:

Dr. Jan vom Brocke

Dr. Jan vom Brocke is Assistant Professor at the Department for Information Systems at the University of Muenster and scientist at the European Research Center for Information Systems (ERCIS) in Germany. He has worked for industry as well as consultancy companies and has research and teaching experience at the universities of Muenster, Bielefeld, Saarbrücken, Bucharest, Tartu and Dublin. The work of Dr. Jan vom Brocke is characterised by a significant link between information systems engineering and management accounting. He is one of the founding members of the Freestyle Learning Group, which carries out the development of OpenSource E-Learning-Systems. On the basis of these systems Dr. Jan vom Brocke established knowledge networks for Controlling Science as well as for Internet Economics throughout Germany. Dr. Jan vom Brocke has published many papers in various journals, books, and conference proceedings. Moreover he is coauthor and editor of text books on systems engineering and accounting.
http://www.vom-brocke.de

MScIS Maik A. Lindner

Maik A. Lindner is Researcher, Lecturer and PhD student at the Department for Information Systems at the University of Muenster. Like Dr. Jan vom Brocke he is also scientist at the European Research Center for Information Systems (ERCIS) in Germany. Last year he received his MSc in Information Systems. His master thesis was about the use of web services within the e-Procurement concerning requirements, design alternatives and success factors. His current research deals with the Controlling of Service-oriented Architectures

Further information about ERCIS: http://www.ercis.de/ERCIS/en/index.html



· GATE, SWAN and New Developments in Social Software

Presenter: Dr. Hamish Cunningham, Department of Computer Science, University of Sheffield
Dates: Tuesday, 5 October 2004
Time: 16:00 Irish Summer Time(IST) to 17:00 IST
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck

Abstract
This talk will cover three related topics:
 
(1) The problem of bringing together natural languae content and semantic representations for next-generation knowledge management and other applications, and how the GATE system (http://gate.ac.uk) is addressing this problem in projects like SEKT, KnowledgeWeb and LIRICS
(2) The DERI SWAN project for large-scale semantic annotation using GATE and OntoText's KIM system (http://www.ontotext.com)
(3) New developments in social software, and how your TV is going to be The Next Big Thing in semantics applications

Bio: Dr. Hamish Cunningham
Hamish Cunnigham is part of the Natural Language Processing group which hangs out in the Institute for Language, Speech and Hearing, our section of which is in the Department of Computer Science at the University of Sheffield, England, the UK, Europe, The World.  
 
Hamish runs the GATE project, the MUSE project (with Yorick), and Sheffield's part of the MUMIS project. MUMIS and MUSE are Information Extraction projects. I also work on the Advanced Knowledge Technologies project which is related to the semantic web. I look after purchasing and administration strategy for the NLP group compute environment.   
 
For more on SWAN see the Projects page at www.deri.ie
For more about Hamish Cunningham, see http://www.dcs.shef.ac.uk/~hamish/

For more information on this talk contact Matthew Moran.



· Service Infrastructure - A bus for all IT

Presenter: Dr. Frank Leymann, chief architect of IBM's workflow technology
Dates: 15 Sept 2004
Time: 13:30 IST, 14:30 CEST
Location: DERI, University of Innsbruck videolink to DERI, NUI Galway

Bio: Frank Leymann
Dr. Leymann is an IBM Distinguished Engineer and a member of the IBM Academy of Technology. He is the chief architect of IBM's workflow technology, and a member of the IBM Application Integration Middleware (AIM) Architecture Board that sets the overall direction of IBM's middleware. He has worked on database systems, database tools, and transaction processing. Dr. Leymann has published many papers in various journals and conference proceedings, filed a multitude of patents, and is the coauthor of textbooks on repositories and workflow systems. He served on program committees and organization committees for many international conferences and is editor of the journal of the database management system special interest group of the German computer society Gesellschaft für Informatik (GI). 

For more information on these talks contact Matthew Moran.


· Community Web or yet another CSCW (Community-Supported Creative Web)

Presenter: Dr. Hideaki Takeda, http://www-kasm.nii.ac.jp/~takeda/index.html
Dates: Friday, 3 September 2004
Time: 10:00 Irish Summer Time(IST) to 11:00 IST
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck

Abstract
Web was orginally designed to enhance information and knowledge exchange but needs more functions to facilitate knowledge exploitation. We propose a framework to facilitate personal knowledge exploitation called ICAN (Information and Communication Activities Navigation), which includes collect, create, donate, relate, collaborate, and present activities. Semblog project is realization of ICAN. Semblog provides an integrated environment for distributing small contents and making human relationship seamlessly. It enables people to exchange information and knowledge with easy and casual fashion in degrees of personal interest, e.g. checking, clipping, and posting. Semblog extends Weblogs by adding semantic tags to Weblog sites and entries with RSS/FOAF aggregators, for an egocentric search method and recommendation. We design a new metadata module to define personal ontology that realizes semantic relations among people and Weblog sites.

To learn more about his work, please visit his home page:
http://www-kasm.nii.ac.jp/~takeda/index.html

Bio: Dr. Hideaki Takeda
Hideaki Takeda is a professor at National Institute of Informatics (NII) and a professor in Department of Informatics at the Graduate University of Advanced Studies (Sokendai). He received his Doctor of Engineering from the University of Tokyo in 1991. His research interest in computer science includes ontology engineering, community informatics, and knowledge sharing systems. His e-mail address is takeda@nii.ac.jp.

For more information on this talk contact Matthew Moran.



· A Logic for Specifying Contracts in Semantic Web Services 

Presenter: Professor Michael Kifer, http://www.cs.sunysb.edu/~kifer/
Dates: Tuesday, 20 July 2004
Time: 09:30 IST to 11:30 IST
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck

Abstract
A Logic for Specifying Contracts in Semantic Web Services*
Michael Kifer, Department of Computer Science
State University of New York at Stony Brook
USA
* Joint work with Hasan Davulcu and I.V. Tamakrishnan

A requirements analysis in the emerging field of Semantic Web Services (SWS) (see http://daml.org/services/swsl/requirements/) has identified four major areas of research:
- intelligent service discovery
- automated contracting of services
- process modeling
- and service enactment.

This paper deals with the intersection of two of the areas: process modeling as it pertains to automated contracting. Specifically, we propose a logic, called CTR-S, which captures the dynamic aspects of contracting for services. Since CTR-S is an extension of the classical first-order logic, it is well-suited to model the static aspects of contracting as well. A distinctive feature of contracting is that it involves two or more parties in a potentially adversarial situation. CTR-S is designed to model this adversarial situation through its novel model theory, which incorporates certain game-theoretic concepts. In addition to the model theory, we developed a proof theory for CTR-S and demonstrate the use of the logic for modeling and reasoning about Web service contracts.

Bio: Dr. Michael Kifer
Michael Kifer is a Professor with the Department of Computer Science, State University of New York at Stony Brook (USA). He received his Ph.D. in Computer Science in 1985 from the Hebrew University of Jerusalem, Israel, and the M.S. degree in Mathematics in 1976 from Moscow University, Russia.

Dr. Kifer's interests include database systems, knowledge representation, and Web information systems. He has published two text books and numerous articles in these areas. In 1999 and 2002 he was a recipient of the ACM-SIGMOD "Test of Time" awards for his works on F-logic and object-oriented database languages.

For more information on these talks contact Matthew Moran.



· Dynamic Web Service Integration

Presenter: Dr. Charles J. Petrie, http://snrc.stanford.edu/~petrie/
Dates: Thursday, 15 July 2004
Time: 15:00 IST to 17:00 IST
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck

Abstract
We describe requirements for a WSDL++ that would allow Business Service Directories to return not simply single services but rather plans for combinations of services to achieve the intended effects. This is part of a larger vision of virtual enterprises and dynamic processes that would render irrelevant BPEL4WS-like approaches to process choreography and ochestration. The new approach requires cultural and possibly legal changes, but none worse than has already occured with consumer use of credit cards on the Internet. We describe the substantial research challenges.

Bio: Dr. Charles J. Petrie
Dr. Petrie was a Founding Member of Technical Staff of the AI Lab founded by Prof. Woody Bledsoe at the Microelectronics and Computer Technology Consortium (MCC) in 1984, Project Leader of the first technology commercialized by MCC, Founding Editor-in-Chief of IEEE Internet Computing, and Founding Executive Director of the Stanford Networking Research Center, where he currently serves as Staff Scientist to a mature organization. Dr. Petrie has been often asked to write and speak on Internet futures. He was invited to the Kingdom of Saudi Arabia to speak on the occasion of the founding of the Internet in that country, has written opinions extensively for IEEE Internet Computing, and gave a predictive invited lecture in Stockholm in 2001 on the future impact of the wireless Internet.

For more information on these talks contact Matthew Moran.



· CORSO spaces: an enabling infrastructure for GRID computing and semantic web

Presenter: Professor Dr. Eva Kühn, http://www.complang.tuwien.ac.at/eva
Dates: Wednesday, 14 July 2004
Time: 11:00 IST to 13:00 IST
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck

Abstract
CORSO (Coordinated Shared Objects) is a genuinely distributed implementation of the space based computing paradigm, based on research work carried out at the Vienna University of Technology. Communication is abstracted in that applications simply read and write objects in a shared space. The automatic and intelligent distribution of required data in the network is technically accomplished by built-in replication protocols, providing the advantages of fault-tolerance, scalability and fail-over. At any time, each participant in the network has a unified and consistent view of the state of the entire distributed system. Participants detect each other autonomously. Required information (e.g. current load, provided services) is automatically replicated in near-time to all authorized parties. Based on this information each participant may: optimize its own behaviour, manage itself, perform smart decisions, and join and leave dynamically. There is no need for a central coordinator which allows the self-organisation and self-healing of software components.
With the abstraction of a space, the software application layer is virtualised: the space realizes a complete separation between application logic (SW) and physical infra-structure (HW, network, topology). CORSO offers language bindings for .NET, Java and C++ on UNIX, Linux, Windows, z/OS and mobile platforms, can be integrated into existing frameworks like J2EE and .NET, and can be used as an enabling middleware infra-structure paradigm for enterprise GRID computing and semantic web technology.

Bio: Professor Dr. eva Kühn
Dr. eva Kühn holds the titles graduated engineer of computer sciences (Dipl. Ing.), Ph.D. (Dr. techn.) and Venia Docendi (Univ. Doz.) from the University of Technology, Vienna. She received the Heinz-Zemanek research award for the her Ph.D. work on "Multi Database Systems" and a Kurt-Gödel Research Grant from the Austrian Government for a sabbatical at the Indiana Center for Databases at Purdue University, Indiana, USA. Dr. Kühn is employed as a.o. Univ. Prof. at the University of Technology Vienna, Institute of Computer Languages, since 1984.
Dr. Kühn has published more than 40 international articles in the areas of multi-database integration, heterogeneous transaction processing, parallel and distributed programming and coordination languages. Her current teaching topics are parallel processing and coordination tools. She has served as conference chair, program committee member and local arrangement coordinator for many international conferences.
In 1997, an Austrian patent was registered for her research work on a new "coordination system" - the European patent was granted in 2001, the US patent is pending. Based on these patents, Dr. Kühn founded the company tecco Coordination Systems in April 1997. tecco develops and markets the middleware system CORSO, which is a lean, peer-to-peer based, virtual shared memory system and CORSO based products. Main CORSO application areas are enterprise application integration and replication, collaboration of mobile computers and workflow management. Since 1997, Dr. Kühn is managing director and chief technical officer of tecco.
 

For more information on these talks contact Matthew Moran.



· Semantic Integration of Heterogeneous Databases: The Relational Logic Approach

Presenter: Prof. Michael Genesereth, http://logic.stanford.edu/people/genesereth/
Dates: Tuesday, 13 July 2004
Time: 15:00 IST to 17:00 IST
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck

Abstract
In recent years there has been a marked increase in the amount of "structured" data available on the world's computer networks, and all indicators suggest that this trend will continue in the years to come. Unfortunately, accessing this information in an integrated way is complicated by "semantic heterogeneity" among the data sources, i.e. differences in their schemas and vocabulary. In this presentation, we will look at this problem in detail. We will see why relational algebra is inadequate for the task and why relational logic, being more expressive, solves the problem. We will look at one particular data integration system, called Infomaster, and a variety of its applications. Finally, we will discuss some of the practical problems in developing large scale "datawebs", and we will examine the prospects for for building a fully integrated "World Information Network", essentially a World Wide Web for databases.

Bio: Professor Michael Genesereth
Michael Genesereth is an associate professor in the Computer Science Department at Stanford University. He received his Sc.B. in Physics from M.I.T. and his Ph.D. in Applied Mathemetics from Harvard University. Prof. Genesereth is most known for his work on computational logic and applications of that work in enterprise computing. He was program chairman for the 1983 AAAI conference and the 1997 International World Wide Web Conference. He is the current director of the Center for Information Technology at Stanford.
 

For more information on these talks contact Matthew Moran.



· UDDI / BSR Requirements Gap Analysis

Presenter: Dr. Charles J. Petrie, http://snrc.stanford.edu/~petrie/
Dates: Monday, 12 July 2004
Time: 16:00 IST to 18:00 IST
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck

Abstract
We examine the requirements for a WSDL-based Business Services Registry, and examine the gap between these requirements and the existing UDDI specification and implementation. We illustrate at least better interface and describe some of the research issues.

Bio: Dr. Charles J. Petrie
Dr. Petrie was a Founding Member of Technical Staff of the AI Lab founded by Prof. Woody Bledsoe at the Microelectronics and Computer Technology Consortium (MCC) in 1984, Project Leader of the first technology commercialized by MCC, Founding Editor-in-Chief of IEEE Internet Computing, and Founding Executive Director of the Stanford Networking Research Center, where he currently serves as Staff Scientist to a mature organization. Dr. Petrie has been often asked to write and speak on Internet futures. He was invited to the Kingdom of Saudi Arabia to speak on the occasion of the founding of the Internet in that country, has written opinions extensively for IEEE Internet Computing, and gave a predictive invited lecture in Stockholm in 2001 on the future impact of the wireless Internet.
 

For more information on these talks contact Matthew Moran.



· Bootstrapping the Semantic Web: A Machine Learning Approach

Presenter: Dr. Nick Kushmerick, Computer Science Department at University College Dublin. (nick@ucd.ie)
Dates: Friday, 18 June 2004
Time: 15:00 IST to 16:30 IST
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck

Description
The Semantic Web has attracted substantial attention since the vision was first articulated several years ago. In a nutshell, the Semantic Web augments traditional Web content with explicit machine-processable semantic metadata, enabling automated content retrieval, manipulation and aggregation. The initial futuristic vision has matured into a carefully crafted set of technical proposals, such as the Resource Description Framework and the Web Ontology Language. However, it is widely recognized the Semantic Web will not "take off" until a critical mass of semantic metadata is actually available. This dilemma gives rise to an interesting challenge for machine learning: Can we bootstrap the Semantic Web by training learning algorithms on small amounts of hand-annotated Semantic Web content? In this talk, I will summarize two ongoing research projects. First, I will describe our work on adaptive information extraction (learning to convert natural language documents into structured database-like entities). Our extraction algorithm outperforms several competitors on a range of tasks. Second, I will describe our learning approach to annotating Web Services with semantic metadata. Web Services have a rich relational structure, and we have developed a novel iterative classification algorithm that exploits this structure. This research is funded by Science Foundation Ireland and the US Office of Naval Research, and is joint work with Aidan Finn and Andreas Hess.

BIO
Nicholas Kushmerick is a member of the Computer Science Department at University College Dublin. He received his PhD from the University of Washington in 1997. He is interested in the application of machine learning and other AI techniques to a variety of problems in information extraction and retrieval. Nick has received substantial research funding from Enterprise Ireland, Science Foundation Ireland, and the US Office of Naval Research.
 

For more information on these talks contact Matthew Moran.



· Presentation of IRS II and Magpie from The Open University

Presenter: John Domingue, J.B.Domingue@open.ac.uk, Knowledge Media Institute, The Open University, Milton Keynes, UK
Dates: Thursday, 11 March 2004
Time: 10:30 GMT to 12:30 GMT
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck

IRS-II: A Framework and Infrastructure for Semantic Web Services
Semantic web services hold enormous potential. The augmentation of web services with formal descriptions of their competence will facilitate their automatic location, mediation, and composition. In this talk I will describe IRS-II (Internet Reasoning Service) a framework and implemented infrastructure to support the publication, location, and execution of heterogeneous web services, augmented with semantic descriptions of their functionalities. IRS-II has three main classes of features which distinguish it from other work on semantic web services. Firstly, by automatically creating wrappers, software implemented as standalone Java or Lisp programs or as HTTP accessible web applications can be published through the IRS-II very easily. Secondly, because IRS-II is built on a knowledge modelling framework, we provide support for capability-driven service invocation, for flexible mappings between services and problem specifications and we support dynamic, knowledge-based service selection. Finally, IRS-II services are web service compatible – standard web services can be trivially published through the IRS-II and any IRS-II service automatically appears as a standard web service to other web service infrastructures. In the talk I will illustrate the main functionalities of IRS-II through a live demonstration.

More information on IRS-II including papers, demonstration movies and software (the IRS-II browser and publishing platform) are available from http://kmi.open.ac.uk/projects/irs/.

Magpie – Towards a Semantic Web Browser
Web browsing involves two tasks: finding the right web page and then making sense of its content. So far, research has focused on supporting the task of finding web resources through ‘standard’ information retrieval mechanisms, or semantically-enhanced search. Much less attention has been paid to the second problem. In this talk I will describe Magpie, a tool which supports the interpretation of web pages. Magpie offers complementary knowledge sources, which a reader can call upon to quickly gain access to any background knowledge relevant to a web resource. Magpie automatically associates an ontology-based semantic layer to web resources, allowing relevant services to be invoked within a standard web browser. Hence, Magpie may be seen as a step towards a semantic web browser. In the talk I will illustrate Magpie’s functionality with a number of live demonstrations.

More information on Magpie including papers, demonstration movies and a plugin for Internet Explorer are available from http://kmi.open.ac.uk/projects/magpie/.

For more information on these talks contact Matthew Moran.



· Presentation of the Intelligent Topic Manager (ITM) Solution from Mondeca SA

Presenter: Jean Delahousse, CEO, Mondeca AT
Dates: 1 March 2004
Time: 12:00 GMT to 13:00 GMT
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck

ITM, a knowledge management solution developed by Mondeca based on Semantic Web technologies, is one of the most elaborate industrial efforts in Semantic Web enabled web applications.
The aim of this presentation is to provide an overview of ITM and to explore possible future collaborations between DERI and Mondeca.

For more information contact Matthew Moran.

· Reducing SHIQ- Description Logic to Disjunctive Datalog Programs

Presenter: Boris Motik (FZI)
Dates: 27 February 2004
Time: 13:00 GMT to 15:00 GMT
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck

Motivated by the prospects of reusing optimization techniques from deductive databases, in this talk, I present a novel approach to checking consistency of ABoxes, instance checking and query answering, w.r.t. ontologies formulated using a slight restriction of the description logic SHIQ. The approach proceeds in three steps: (i) the ontology is translated into first-order clauses, (ii) TBox and RBox clauses are saturated using a resolution-based decision procedure, and (iii) the saturated set of clauses is translated into a disjunctive datalog program. Thus, query answering can be performed on the resulting program, while applying all existing optimization techniques, such as join-order optimizations or magic sets. Equally important, the resolution-based decision procedure I present is the first one which, for a description logic with inverse roles and number restrictions, and for unary coding of numbers, is worst-case optimal, i.e. it runs in ExpTime.

For more information contact Matthew Moran.

· Dynamic Web services composition using Problem-solving methods

Presenter: Prof. Sung Kook Han, Visiting Professor at DERI Innsbruck, Dept. of computer Eng., Won Kwang Univ., Korea
Dates: 23 February 2004
Time: 10:00 GMT to 11:00 GMT
Location: DERI, NUI Galway

To resolve the impediments of interoperability and portability in heterogeneous components composition, problem-solving methods (PSM) that can provide the architectural description and the reasoning processes are necessary for the composition of loosely-coupled, heterogeneous Web services components.

The Unified Problem-Solving Method description Language (UPML) is an architectural description language specialized for a specific type of systems providing components, adapters and their connection configuration.

In this talk we present Meta-Web services towards the dynamic composition of Web services using problem-solving approach of UPML. The aim of Meta-Web
service is to generate a composite Web service description independent of platforms and many proposed service description languages.

For more information contact Matthew Moran.



· General Reference Enterprise Architecture

Presenter: Professor Yuliu CHEN from Dept. of Automation, Tsinghua University, Beijing, CHINA
Dates: 23 January 2004
Time: 11:00 GMT to 13:00 GMT
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck

1. "Add Process View into General Reference Enterprise Architecture"

- Introduction to General Enterprise Reference Architecture----the importance of system architecture on enterprise integration
- The gap between theoretical research and industrial practice
- What should be extended
- Why people pay more and more attention to process improvement
- How to improve----introduce process modeling tools and analysis methods
- Conclusion

2. "System Architecture Should Explicitly Include the Elements of Economy"

- why it is necessary to have an economic view to be involved in General Enterprise Reference Architecture
- What problems economic view should answer?
- The possible modeling framework of economic view
- Necessary future work

For more information contact Matthew Moran.



· Trust Negotiation

Presenter: Daniel Olmedilla, L3S, Universität Hannover
Dates: 22 January 2004
Time: 14:00 GMT
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck, Room 115 Science and Technology Buillding

Researchers have recently begun to develop and investigate policy languages to describe trust and security requirements on the Semantic Web. Such policies will be one component of a run-time system that can negotiate to establish trust on the Semantic Web. PeerTrust can be used to express different kinds of access control policies and control their use at run time, a new approach to basis for PeerTrust's simple yet expressive policy and trust negotiation language, built upon the rule layer of the Semantic Web layer cake. PeerTrust can be used to support delegation, policy protection and negotiation strategies.

Gaining access to sensitive resources on the Web usually involves an explicit registration step, where the client has to provide a predetermined set of information to the server. The registration process yields a login/password combination, a cookie, or something similar that can be used to access the sensitive resources. An explicit registration step can be avoided on the Semantic Web by using appropriate semantic annotations, rule-oriented access control policies, and automated trust negotiation. A implementation of implicit registration and authentication that runs under the Java-based MINERVA Prolog engine is already available. The implementation includes a PeerTrust policy applet and evaluator, facilities to import local metadata, policies and credentials, and secure communication channels between all parties.

For more information contact Matthew Moran.



· Semantic Matching

Presenter: Ilya Zaihrayeu, University of Trento
Dates: 22 January 2004
Time: 15:00 GMT
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck, Room 115 Science and Technology Buillding

The progress of information and communication technologies has made accessible a large amount of information stored in different application-specific databases and web sites. The number of different information resources is rapidly increasing, and the problem of semantic heterogeneity is becoming more and more severe. One proposed solution is matching. We think of match as an operator that takes two graph-like structures (e.g., database schemas or ontologies) and produces a mapping between elements of the two graphs that correspond semantically to each other. So far, the key intuition underlying all the approaches to matching has been to map labels (of nodes) and to look for similarity (between labels) using syntax driven techniques and syntactic similarity measures. We say that all these approaches are different variations of syntactic matching. In syntactic matching semantics are not analyzed directly, but semantic correspondences are searched for only on the basis of syntactic features. We propose a novel approach, called semantic matching, with the following main features:

· We search for semantic correspondences by mapping meanings (concepts), and not labels, as in syntactic matching; when mapping concepts, it is not sufficient to consider the meanings of labels of the nodes, but also the positions that the nodes have in the graph.

· We use semantic similarity relations between elements (concepts) instead of syntactic similarity relations. In particular, we consider relations, which relate the extensions of the concepts under consideration (for instance, more/less general relations).

The contributions to the state of the art are (i) a rational reconstruction of the major matching problems and their articulation in terms of the more generic problem of matching graphs; (ii) the identification of semantic matching as a new approach for performing generic matching; and (iii) a proposal of using SAT as a possible way of implementing semantic matching.

For more information contact Matthew Moran.


· Advanced Programming with Frame-based Logic Languages - Tutorial

Tutor: Michael Kifer, Stony Brook University of New York
Dates: 5-7 January 2004
Details: http://www.deri.at/events/meetings/tutorials/kifer_050104
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck, Room 115 Science and Technology Buillding

Michael Kifer from the Stony Brook University of New York, involved in the development of both F-Logic and HiLog and currently co-chair of the SWSI Language committee, will be coming to Innsbruck from 5 until 7 January 2004 to give a tutorial on Programming with Frame-based logic languages.
The tutorial will consist of two parts: a theoretical part, with an intensive tutorial on Frame-based logic languages and a practical part, consisting of a hands-on training of Advanced Programming with Frame-based Logic Languages using the F-Logic based tool FLORA2.
There is the possibility to follow the tutorial via a videoconferencing link at the National University of Ireland, Galway, Ireland. Please contact Jos de Bruijn if you would like to participate in the tutorial in Innsbruck and contact Matt Moran if you would like to participate in Galway.



· Technologies for the Semantic Web: Lessons from Building Knowledge-Based Systems

Presenter: Prof. Mark Musen, Professor of Medicine and Computer Science, Stanford University
Dates: 18 December 2003, 17:00 GMT
Location: DERI, National University of Ireland, Galway - video link to Universidad Politécnica de Madrid (UPM)

Schedule:
18h00-20h00 (CET) (1 hour invited talk, 1 hour round table)

Discussions of technologies for developing the Semantic Web tend to concentrate on languages for building ontologies and interfaces for implementing Web services. Often missing from these discussions is mention of the tools that will allow developers to build and maintain ontologies and the basic software components that will facilitate the rapid implementation of Web services. "Web languages" such as OWL seem to have been designed with minimal attention to how system builders actually will use the languages to edit ontologies, and Web services to date have focused almost purely on domain tasks, rather than on generic methods that can automate those tasks.

The knowledge-based systems community has considerable experience in the construction of tools to build localized intelligent problem solvers. The approaches that have been explored have great potential for the creation of distributed problem solvers for the Semantic Web. This work offers the opportunity to fill some of the gaps in building pragmatic Web-based architectures.

Work at Stanford on the Protege project, in particular, highlights how knowledge-based-systems technology translates to the Web, and clarifies some of the challenges that need to be addressed to make distributed intelligent problem solvers as ubiquitous as the Web itself.


· Planning for Web Services

Tutor: Mark Carman, Trento University
Dates: 11 December 2003, 9am
Details: Related papers
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck, Room 115 Science and Technology Buillding

Mark Carman is a PhD student in Trento who has been doing his PhD research on Planning for Semantic Web for around 2 years now
Schedule:
09:00 - 10:00 Planning for Web Services
10:00 - 10:30 by Ruben Lara (but title and presentation not fixed yet)
10:30 - 11:30 intensive discussion



· Jena Tutorial

Tutor: Andy Seaborne and Chris Dolan, HP Labs Bristol
Dates: 10 December 2003, 14.30 GMT
Details: Jena Homepage
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck, Room 115 Science and Technology Buillding

Andy Seaborne and Chris Dolan present an introduction to RDF, Jena (a framework for writing semantic web applications) and Joseki (the Jena RDF Server).

· Description Logic Tutorial

Tutors: Ian Horrocks and Sean Bechhofer (University of Manchester)
Date: 25 November 2003
Details: http://www.deri.at/events/meetings/tutorials/horrocks_251103/
Location: DERI, NUI Galway videolink to DERI, University of Innsbruck, Room 115 Science and Technology Buillding

Ian Horrocks and Sean Bechhofer from the University of Manchester, both involved in the field of Description Logics and the development of the Web Ontology Language OWL, will be coming to Innsbruck on 25 November to give a tutorial on Description Logic reasoning.
The tutorial will consist of two parts: a theoretical part, with an intensive tutorial on Description Logic and a practical part, consisting of a hands-on training of Description Logic reasoning using OilEd and FaCT.
The tutorial will take place at the Institute for Computer Science, University of Innsbruck, Innsbruck Austria.