Gayathri Nadarajan

 Postdoctoral Researcher
Centre for Intelligent Systems and their Applications
School of Informatics
University of Edinburgh
2.02 Informatics Forum
10 Crichton Street
Edinburgh EH8 9AB, Scotland
E-mail: gaya.n [at] ed.ac.uk
Phone: +44 131 651 4161
CV: [html] [pdf]

Research  Teaching  Publications  Other

Currently

I'm a researcher with the Fish4Knowledge (F4K) project. My roles include:

In particular I work with data from Ecogrid, Taiwan.
Here are historical video clips from one of the Ecogrid sites.

I passed my viva in August 2010 with my thesis Semantics and Planning Based Workflow Composition for Video Processing. I worked with Jessica Chen-Burger and Bob Fisher and will continue to do so in F4K. My research involved investigating methods to model generic vision tasks and to provide an automatic mechanism to allow users without image processing expertise to perform complex vision tasks. Here is a brief statement of my work:

Much of video analyses are conducted manually. Automatic solutions are only possible with image processing expertise and access to specialised tools. Furthermore, each time a task is required to be done, image processing experts develop the applications from scratch and do not reuse existing modules that they have implemented previously due to the inherent difficulties in estimating the input, output and threshold values. Workflow systems, on the other hand, have several drawbacks including construction of workflows automatically. I propose a hybrid workflow composition approach that will enable the selection of image processing tools based on their performance levels automatically or semi-automatically (with user involvement). In order to achieve this ontologies are used to assist with semantic interoperability and planning to assist with performance-based selection. On a wider context, the solution I propose will enable image processing-naive users, such as domain experts to conduct complex video processing tasks. It would also provide a reasonable automatic solution for various video analyses that would take too long to perform manually. The use of semantics-based technologies would also enable this system to be integrated within a distributed environment, such as the Grid. Read full proposal here. Slides.

 I visited University of Catania, Italy between September and December 2008 to collaborate with image processing experts.

I was involved with the OpenKnowledge project in 2008 and the SynProc project in 2009-10.

My current and past collaborators include Concetto Spampinato (Catania, Italy), Arnaud Renouf (GREYC, France) and James Malone (EBI, Cambridge).

Present Research Interests: Automatic Workflow Composition, HTN Planning, Ontologies, Process Modelling, Image Processing Tools and Techniques.

Recent Research Interests: Business Process Modelling Methods, the Semantic Web.

An informal account of my work in progress.

Teaching

2009 & 2010: System Design Project
2008: InfBase: Support for Learning
2004 - 2009: Informatics 1B (Object-Oriented Programming, Data and Analysis)
2004 - 2008: Informatics 1A (Functional Programming, Computation and Logic)
2006 - 2008: Software Engineering with Objects and Components
2006 - 2007: Informatics Research Review

Previously

2005 - 2010 Ph.D. in Informatics, University of Edinburgh.
Thesis: Semantics and Planning Based Worklflow Composition and Execution for Video Processing.

2004 - 2005 MSc. in Artificial Intelligence, University of Edinburgh, Scotland.
MSc. Project: Translating FBPML to a Semantic Web-Based Language.

2002 - 2004 Did some lecturing and tutoring at University Tenaga Nasional, Malaysia.
Courses: Software Engineering, C Programming, Artificial Intelligence, Computer Literacy, Operating Systems.

1999 - 2002 Software Engineer with Altion Ltd in Dublin, Ireland.
Software development mainly involving Perl, C and Java for network telecommunications software.

1995 - 1999 Completed undergraduate in Computer Science in Trinity College Dublin, Ireland.
Final year project: On-line Handwriting Recognition using Hidden Markov Models.

Publications

Talks/Posters

3DPAS Workshop. eScience Centre, Edinburgh, April 2011.
SICSA DEMOfest poster. November 2009.
Poster at Google Retreat. Zurich, July 2009.
SSP Talk CISA, July 2008.
Informatics Jamboree Poster, June 2007.
Software Systems and Processes Group (SSP) Talk. Oct 2006.
IDIAP 15th Anniversary Workshop. Martigny, Switzerland, Sept 12th-13th, 2006.

Services & Personal

Tae Kwon Do, Korean martial art.
Social Events Convener with the Informatics Graduate School (2008-10). Highlights: Firbush Trip (with photos), Death by Dessert, Go-Ape Forest adventure, Paintball (Photo by Petros), Hillwalking in Pitlochry (Photos by Maria Luisa). Please contact Iain if you have any interesting event in mind!
CompuCast, a podcast for computer scientists by Informatics, Edinburgh University.
Some Personal Photos.