Steen Knudsen received his Ph.D. from the University of Copenhagen in 1990 and was among the pioneers of bioinformatics with a publication in Nature the same year. His postdoctoral training in bioinformatics at Harvard University concerned computational gene finding in the human genome. Since 1998 he has been working with methods for analysis of DNA microarray data. He currently heads the DNA microarray group at the Technical University of Denmark.