-------- Original Message -------- Subject: SOM analysis Date: Mon, 25 Oct 2010 23:13:15 -0400 From: Gustavo Acevedo <gacevedo@uwo.ca> To: yves.vandepeer@psb.ugent.be, Miodrag Grbic <mgrbic@uwo.ca>, Vojislava Grbic <vgrbic@uwo.ca> Dear Yves, I have been using SOM as a clustering technique for the analysis of our expression data in the Arabidopsis response to spider mites. This method has been applied in the analysis of other microarray data and seems to be quite useful in determining differences in the expression profile of a defined group of genes. My knowledge on this analysis is limited to the way it has been used in published papers (attached) and I have done some initial attempts to apply it to our data set (which I showed during the meeting in Montenegro). I would like to perform this analysis in such a way that give us confidence on the information we can get from it. I would really appreciate if you could refer me to someone in your group with experience in this kind of analysis who could help me out. Best regards, Gustavo -- Yves Van de Peer, PhD. Professor in Bioinformatics and Genome Biology Associate Department Director, VIB Department of Plant Systems Biology Group Leader Bioinformatics and Systems Biology Ghent University Technologiepark 927 B-9052 Ghent Belgium Phone: +32 (0)9 331 3807 Cell Phone: +32 (0)476 560 091 Fax: +32 (0)9 331 3809 email: yves.vandepeer@psb.vib-ugent.be http://bioinformatics.psb.ugent.be/