Computer Science and Engineering
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The Graphical Query Language: a tool for analysis of gene expression time-courses

I.G. Costa, A. Schönhuth and A. Schliep

Bioinformatics 2005, 21:10, 2544–5.

The Graphical Query Language (GQL) is a set of tools for the analysis of gene expression time-courses. They allow a user to pre-process the data, to query it for interesting patterns, to perform model-based clustering or mixture estimation, to include subsequent refinements of clusters and, finally, to use other biological resources to evaluate the results. Analyses are carried out in a graphical and interactive environment, allowing expert intervention in all stages of the data analysis. AVAILABILITY: The GQL package is freely available under the GNU general public license (GPL) at

Presented on Jan. 13, 2006 by Ivan Costa at Bioinformatics Working Seminar of the Max Planck Institute of Molecular Plant Physiology (Invited Talk).