Encyclopedia > Sigmoid

Article Content

Sigmoid

"Sigmoid" means resembling the letter S or the lower-case Greek letter sigma (ς).

In a neural network, the sigmoid function is used to add nonlinearity. A bounded sigmoid function is the hyperbolic tangent function, or this translated to the range (0,1); an unbounded sigmoid function is the inverse hyperbolic cosine function.

Featured Article

Shinnecock Hills, New York

... 25 to 44, 20.5% from 45 to 64, and 14.1% who are 65 years of age or older. The median age is 28 years. For every 100 females there are 82.8 males. For every 100 females ...