Non-linéarité sigmoïdale

Définition

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Français

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Anglais

sigmoidal nonlinearity

Another name for the logistic function and certain related functions (such as tanh(x)). Sigmoidal functions are a type of squashing function. They are called because sigma is the Greek letter "s", and the logistic functions look somewhat like a sloping letter "s" when graphed.

Source : UNWS machine learning dictionary ]