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Keynote
Speakers:
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Using Performance Models to Dynamically Control E-Commerce
Performance
Daniel A. Menasce
George Mason University
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The complex nature of E-business workloads, the
complexity of multi-layer architectures of the IT infrastructures that
support E-Business sites, and the short-term fluctuations of the workload
pose several challenges to performance management and modeling.
We discuss an approach in which queuing network
performance models combined with combinatorial optimization techniques are
used in the design of a dynamic Quality of Service (QoS) controller for
e-commerce sites. Results of the implementation of this approach under a
TPC-W, a benchmark for e-commerce, workload are presented.
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Dr. Daniel A.
Menasce is a Professor of Computer Science at George Mason University
(GMU) where is also the co-director of the E-Center for E-Business and
Director of GMU's MS in E-commerce program. Menasce holds a Ph.D degree in
CS from UCLA and is the author of over 130 papers and six books. He is a
Fellow of the ACM and the recipient of the 2001 A. A. Michelson lifetime
achievement award by the Computer Measurement Group. Menasce was a faculty
member at PUC-RIO for many years where he was also chair of its
Departamento de Informatica.
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Agent-Based Semantic Web
Services
Larry Kerschberg
George Mason University
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This talk addresses the issues
of specifying, designing and building agent-based Web services.
We begin by reviewing agent concepts and agent architectures such
as mediated and cooperative multi-agent systems.
Next we turn to the eXtensible Markup Language (XML) as the
language for information system cooperation and interoperation.
XML merges meta-data and data so that data objects can carry with
them their “semantics” in terms of usage, operations, provenance,
quality, reputation, security, etc. Standard
protocols such as XML Schema, X-Query, and XML Signature allow the Web to
be treated as an object-oriented secure distributed information space.
Web Services
allow tradition programs residing on diverse hardware and software
platforms to discover each other, communicate, negotiate, cooperate and
interoperate over the Internet using XML-based protocols such as Simple
Object Access Protocol (SOAP), Web Services Description Language (WSDL)
and Universal Description and Discovery Integration (UDDI).
We present a
Case Studyof the ACME Virtual
Enterprise, consisting of a collection of Web services including an
aggregated catalog (ontology) of office products, an optimization service,
a credit-card processing service, an XML Signature service, an order
processing service and a transportation service.
Finally, we
discuss research topics related to service modeling, workflow, security,
trust that will determine whether Web services will become part of the
E-Business infrastructure.
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Dr.
Larry Kerschberg is Professor and Former Chairman of the Department of
Information and Software Engineering in the School of Information
Technology and Engineering at George Mason University.
He is also Co-Director of the E-Center for E-Business at George
Mason University. He holds a
Ph.D. in Engineering from Case Western Reserve University, an M.Sc. in
Electrical Engineering from the University of Wisconsin-Madison, and a
B.Sc. degree, with honors, in Engineering Science from Case Institute of
Technology.
From
1970 to 1976, Dr. Kerschberg taught at the Departamento de Informatica at
PUC-RJ, where he co-invented, with Joao Pacheco, the Functional Data Model.
He has also held positions at the University of Maryland, College
Park, Bell Laboratories, the University of South Carolina, and George
Mason University.
Dr.
Kerschberg’s research focuses on agent-based systems, knowledge
management for e-business, and data mining and knowledge discovery in
databases. Dr. Kerschberg serves as Editor-in-Chief of the International
Journal of Intelligent Information Systems.
He served as General Chair of the 1993 ACM SIGMOD Conference held
in Washington, D.C. Dr.
Kerschberg organized and has served as Program Chairman of both the First
and Second International Conferences on Expert Database Systems.
He served as Program Chair for the Scientific and Statistical
Database Management Conference, held at George Mason University, July
18-20, 2001. |
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Eletronic Business and
Combinatorial Optimization
Marcus Poggi
PUC-Rio
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Eletronic Business is a broad
subject involving infra-structure, user interaction, business models,
eletronic auctions and others aspects where many Combinatorial
Optimization problems are present. Solving those problems may be
imperative to the success of many e-business products.
This talk presents some
of these problems and discusses how ideas and techniques from
Combinatorial Optimization can be used to leverage current e-business
applications and can help turning possible potential ones.
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Dr. Marcus Poggi de Aragão is a
Professor of the Department of Informatics of the Pontifical Catholic
University of Rio de Janeiro (PUC-Rio). He holds a Ph.D. from the École
Polytechnique of Montréal and has concentrated his research on
Combinatorial Optimization and its applications. Professor Poggi has
presented his work at conferences such as IPCO, IJCAII, ISIPTA, ALENEX,
WECWIS and has published on many prestigious journals.
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Capacity Planning for Web Services
Virgilio Almeida
e-Speed Laboratory
UFMG
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Delays on the internet and unavailability of Web services
frustate customers and cost billions of dollars to e-businesses. The causes of delays are
various. Overloaded networks and servers are the most common ones. The viability of
Web services and electronic business depends on the ability of the IT infrastructure to offer timely and reliable services. Providing highly scalable architectures is one of the biggest problems
facing high-volume transaction services. E-business engineers need to know more about analysis and capacity planning methodologies to ensure performance,
availability and scalability. Capacity Planning techniques offer much more than just performance prediction. In these times of ubiquitous
Internet services and businesses, capacity planning should be actually
viewed as a powerful management resource.
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Dr. Virgílio Augusto Fernandes de
Almeida is a Professor at the Computer Science Department of
the Federal University of Minas Gerais (UFMG), and the coordinator of the
e-Speed Laboratory. He holds a Ph.D. from the Boston University, B.U., and
has concentrated his research on Scalability and Distributed Computation,
specially in the e-business area. Professor Virgílio has written many
books on his research field, such as "Scaling for E-Business:
Technologies, Models, Performance, and Capacity Planning",
"Capacity Planning for Web Performance" and "Capacity Planning and Performance Modeling".
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