Leonard_Uhr Leonard Uhr (1927- October 5 2000) was an American computer scientist, and a pioneer in computer vision, pattern recognition, machine learning, and cognitive science. He was an expert in many aspects of human neurophysiology and perception, and a central theme of his research was to design artificial intelligence systems based on his understanding of how the human brain works. He was one of the early proponents of incorporation into artificial intelligence algorithms, methods for dealing with uncertainty.