Flexible Scientific Workflow Modeling using Frames, Templates, and Dynamic Embedding

Anne H.H. Ngu (Texas State University)

CSIRO ICT

DATE: 2008-08-12
TIME: 16:00:00 - 17:00:00
LOCATION: CSIRO Seminar Room S206 Lvl 2 DCS Building (Building 108)
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ABSTRACT:
Scientific workflows are increasingly being used by scientists to construct and execute complex scientific analyses. While most scientific workflows systems are generally based on dataflow, some amount of control-flow modeling is often necessary for engineering fault- tolerant, robust, and adaptive workflows. However, control- flow modeling within dataflow often results in workflow specifications that are hard to comprehend, reuse, and maintain. We describe new modeling constructs to address these issues that provide a structured approach for modeling control-flow within scientific workflows, and discuss their implementation within the Kepler open source scientific workflow system. We have applied the approach to example workflows from astrophysics and phylogenetic and these workflows will be demonstrated.

BIO:
Anne Hee Hiong Ngu is currently an Associate Professor with the Department of Computer Science at Texas State University, San Marcos. She received her PhD in Computer Science from University of Western Australia in 1990. Her current research includes Web services composition and discovery, integration of data and applications, automation of business and scientific processes on the web, databases, and agent technologies. She has worked in different countries as a researcher, including Institute of System Science in Singapore, Tilburg University in the Netherlands, Telcordia Technologies and MCC in United States. From 1992-2000, she worked as a Senior Lecturer in the School of Computer Science and Engineering, University of New South Wales (UNSW). She had been awarded summer faculty position by Lawrence Livermore National Laboratory from 2003-2006.