An overview article which very well presents past and current SIGMA activities has been published in the July issue of IEEE Signal Processing Magazine:
H. Blume, B. Bischl, M. Botteck, C. Igel, R. Martin, G. Rötter, G. Rudolph, W. Theimer, I. Vatolkin, C. Weihs – Towards an Automated Dynamic Organization of Huge Music Archives on Mobile Devices