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Data mining algorithm explains complex temporal interactions among genes
Date:6/24/2010

Researchers at Virginia Tech, New York University (NYU), and the University of Milan, Italy, have created a data mining algorithm they call GOALIE that can automatically reveal how biological processes are coordinated in time.

Biological processes such as cell division, metabolism, and development must be carefully synchronized for proper cell function. How such events are coordinated in time is a complex problem in the field of systems biology. While researchers can gather temporal data about the activity of thousands of genes simultaneously, interpreting these datasets in order to understand higher order phenomena such as cell division requires the development of new analysis tools. The mathematically rigorous data mining algorithm GOALIE (Gene Ontology based Algorithmic Logic and Invariant Extractor) reconstructs temporal models of cellular processes from gene expression data. The researchers describe this algorithm in the early on-line Proceedings of the National Academy of Sciences (PNAS) to be released the week of June 21, 2010.*

The researchers developed and applied their algorithm to time-course gene expression datasets from the well-studied organism Saccharomyces cerevisiae, a budding yeast that is also used for raising bread dough and the manufacture of beer, wine, and distilled spirits. They applied their novel temporal logic-based algorithm to a range of yeast data sets involving cell division, metabolism, and various stresses. "A key goal of GOALIE is to be able to computationally integrate data from distinct stress experiments even when the experiments had been conducted independently," said Naren Ramakrishnan, professor of computer science at Virginia Tech, and lead author.

"GOALIE is part of a broader effort to combine data mining with modeling tools", said Bud Mishra, professor of computer science and mathematics with the Courant Institute of Mathematical Sciences at NYU, and corresponding author. Mishra
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Contact: Susan Trulove
strulove@vt.edu
540-231-5646
Virginia Tech
Source:Eurekalert

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