Which method was developed by Prof Lotfi Zadeh?

As a professor at Columbia, working alongside John Ragazzini, Professor Lotfi Zadeh developed a mathematical method called z-transformations, which became a standard means of processing digital signals inside a computer and other types of equipment.

The method could also helo build machines and electronics that gradually move from one set to another, like an automobile transmission, which shifts smoothly from first gear to second, or a thermostat, which flows just as smoothly from hot to cold. Hot and cold meed is not precisely defined. They could exist on a continuum.

In the 1980s, Professor Zadeh’s ideas became popular among Japanese manufactures, thanks to the heavy investment from the government. Currently, the hype has faded, but fuzzy logic remains an active part of the mathematics that underpin the modern world.

In recognition of his work, Prof Zadeh received more than 50 engineering and academic awards.