Definition
A sigmoid function is a bounded differentiable real function that is defined for all real input values and that has a positive derivative everywhere.
Read more about this topic: Sigmoid Function
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“The very definition of the real becomes: that of which it is possible to give an equivalent reproduction.... The real is not only what can be reproduced, but that which is always already reproduced. The hyperreal.”
—Jean Baudrillard (b. 1929)
“Perhaps the best definition of progress would be the continuing efforts of men and women to narrow the gap between the convenience of the powers that be and the unwritten charter.”
—Nadine Gordimer (b. 1923)
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—William James (1842–1910)