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| Klara Nahrstedt: Quality-aware Service Composition Framework for Advanced Distributed Multimedia Services |
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Currently, peer-to-peer overlay networks
have evolved and represent an important service delivery infrastructure
instead of merely providing host connectivity. Various multimedia
services such as media players, multimedia trans-coders, filters,
mixers, are becoming available as stand-alone services offered
to be included into a more complex multimedia service. The question
is how to allow for an autonomous composition and establishment
of even more complex distributed multimedia services in different
types of overlay service networks. In this talk, we present
a quality-aware service composition framework for advanced distributed
multimedia services. We will discuss meta-data programming of
these application services, and their mapping onto the underlying
overlay network infrastructure utilizing service composition
middleware approaches to assist in creation and management of
distributed multimedia services. The overall goal is to present
algorithms that allow for flexible, scaleable, load-balanced,
self-healing, and automated establishment and management of
advanced Quality-aware distributed multimedia services. Our
current results via simulations and real experiments indicate
the feasibility and correctness of our framework when applied
to services such as mobile video and audio on demand, and content-customized
video on demand.
Bio:
Klara Nahrstedt is an associate professor
at the University of Illinois at Urbana-Champaign, Computer
Science Department. Her research interests are directed towards
multimedia middleware
systems, quality of service(QoS), QoS routing,
and QoS-aware resource management in distributed
multimedia systems. She is the coauthor of
the widely used multimedia book `Multimedia: Computing, Communications
and Applications' published by Prentice Hall, the recipient of
the Early NSF Career Award, the Junior Xerox Award, and the IEEE
Communication Society Leonard Abraham Award for Research Achievements.
She is the editor-in-chief of ACM/Springer Multimedia Systems
Journal, and the Ralph and Catherine Fisher Associate Professor.
Klara Nahrstedt received her BA in mathematics from Humboldt University,
Berlin, in 1984, and M.Sc. degree in numerical analysis from the
same university in 1985. She was a research scientist in the Institute
for Informatik in Berlin until 1990. In 1995 she received her
PhD from the University of Pennsylvania in the department of Computer
and Information Science.
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