3 ms·

I wouldn't call the early McCulloch & Pitts work quite "full-fledged". Also backpropagation, essential for multi level perceptrons was not a thing until 1980s.

• samus 3y ago
  Backprop is just applied calculus. People simply didn't think about using it for neuronal networks yet.
  • varjag 3y ago
    It was thought of as early as in 1960s by Rosenblatt but he did not come up with a practical implementation at the time. Lotsa things look obvious in hindsight.