Bilkent University
Department of Computer Engineering


Service Choreography and Orchestration with Conversations


Tevfik Bultan
Associate Professor, Vice Chair
Department of Computer Science
Univerity of California, Santa Barbara

Service oriented computing provides technologies that enable integration of services provided by multiple organizations over the Internet. Typical execution behavior in this type of distributed systems involves a set of autonomous peers interacting with each other through messages. A conversation is the global sequence of messages exchanged among the peers participating to a composite Web service. A choreography specification identifies the set of allowable conversations for a composite Web service. An orchestration, on the other hand, is an executable specification that identifies the steps of execution for the peers. This conversation based modeling framework leads to interesting problems such as realizability, synthesis, conformance, and synchronizability. I will talk about our work on these topics. I will also talk about the Computer Science research at the University of California, Santa Barbara for the students who are interested in applying to our graduate programs.

Bio: Tevfik Bultan is an Associate Professor and the Vice Chair of the Department of Computer Science at the University of California, Santa Barbara. His current research interests are: service oriented computing, concurrency, model checking, static analysis, and software engineering.Tevfik Bultan received his B.S. in electrical and electronics engineering in 1989 from the Middle East Technical University, and his M.S. in computer engineering and information science in 1992 from the Bilkent University, both in Ankara, Turkey. He received his Ph.D. in computer science in 1998 from the University of Maryland, College Park. He joined the Department of Computer Science at the University of California, Santa Barbara in 1998. Tevfik Bultan received a NATO Science Fellowship from the Scientific and Technical Research Council of Turkey (TUBITAK) in 1993, a Regents' Junior Faculty Fellowship from the University of California, Santa Barbara in 1999, and a Faculty Early Career Development (CAREER) Award from the National Science Foundation in 2000.


DATE: 2 January, 2009, Friday@ 13:40