https://en.m.wikipedia.org/wiki/Hebbian_theory

Hebbian theory is a theory in neuroscience that proposes an explanation for the adaptation of neurons in the brain during the learning process.

“Cells that fire together, wire together.” However, this summary should not be taken literally. Hebb emphasized that cell A needs to “take part in firing” cell B, and such causality can only occur if cell A fires just before, not at the same time as, cell B.

간단하게는 w_ij = x_i * x_j 에 해당하는 방식. 예를들어 Hebbian learning rule for Hopfield networks에서 Hebbian Theory의 적용 사례를 볼 수 있다.