The Graphical Query Language: a tool for analysis of gene expression time-courses

I.G. Costa, A. Sch√∂nhuth 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

A reprint is available as PDF.

DOI: 10.1093/bioinformatics/bti311.

The publication includes results from the following projects or software tools: GQL, GenExpTimecourses, GHMM.

The following presentation(s) are based on this publication: Jan. 13, 2006 by Ivan Costa at Bioinformatics Working Seminar of the Max Planck Institute of Molecular Plant Physiology (Invited Talk).

Further publications by Alexander Schliep, Ivan G Costa.