Definition:Sigmoid Curve/Linguistic Note
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Linguistic Note on Sigmoid Curve
The word sigmoid derives from the Greek letter "Sigma", and means S-shaped.
This derives from the archaic form of the English letter $S$, still in use as the integral sign $\int$.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): sigmoid curve
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): sigmoid curve