English
softplus
From soft + plus.
Today it means
noun A smooth approximation to the rectifier in neural networks; it is the analytic function f(x)= ln (1+eˣ).
Sources
Sources: Wiktionary, “softplus”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / softplus