Also known as unit ramp function, unit time ramp, unit ramp
piecewise function that clamps its input to be non-negative
斜坡函数是一個實函數，因此其圖形類似斜坡，故得其名，此函數常用在工程中（例如數位訊號處理）。
Abstract from DBpedia / Wikipedia · CC BY-SA
via Wikidata sitelinks · CC0
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).