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Pravilo delta

Pravilo delta služi za izračun optimalnih uteži v enoslojni nevronski mreži oziroma v perceptronu. Uteži so prosti parametri, ki jih želimo izbrati tako, da bo nevronska mreža delovala čim natančneje. Sprva imajo uteži naključne vrednosti, nato pa jih postopoma korigiramo po pravilu:

,

kjer pomeni:

, konstanta med vrednostjo 0 in 1, imenovana hitrost učenja
, aktivacijska funkcija nevrona
, želena izhodna vrednsot
, utežena vsota nevronovih vhodov
, dejanska izhodna vrednost
-ti vhod.

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