Erik R. Altman is manager of the Dynamic Optimization Group at IBM's T.J. Watson Research Center, Yorktown Heights, NY, and chair of ACM's SIG Governing Board.
ACM's Special Interest Groups (SIGs) cover 36 areas of computing, from graphics to computer-human interfaces, theory to computer architecture, programming languages to bioinformatics, and much more. SIGs form the locus of ACM's technical activities.
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