Yakov Tsypkin, Pioneer in Automatic Control in IFAC (along with Harold Chestnut of Schenectady). Contributed over 300 papers on feedback, pattern recognition, filtering, adaptive control, system identification, adaptive and learning automatic systems and more. His work at the Institute of Control Sciences, Russian Academy of Sciences in Moscow is well known. Here from PhD. Vadim Utkin and PhD. Boris Polyak about their memories of this influential man. (less info)