convex

/'kɒnveks/ uk　 词频 #23277

托福 TOEFL英语专业八级英语专业四级

convex 是什么意思

中文释义

a. 中凸的, 凸圆的, 凸面的

n. 凸状, 凸面体, 凸面结构

英文释义

a. curving or bulging outward

convex 的真实例句

以下例句摘自真实英文文章，看看 convex 在自然语境里怎么用：

And then there’s London’s “Walkie-Talkie” building: a skyscraper whose convex shape caught the sun like a magnifying glass, melting cars.

—— The Anatomy of a Failure

The positive values indicate upwardly convex surfaces, negative values indicate upwardly concave surfaces, and values near zero represent flat or nearly planar areas.

—— Identifying the topographic signature of early Martian oceans

This is especially relevant for the MSE error function in linear regression, because the error function is convex, which means it has only one global optimum.

—— A Visual Explanation of Linear Regression

However, unlike the squared loss, Tukey’s loss function is not always convex, which means it can have local minima and saddle points where the optimization may get stuck (Animation 25).

—— A Visual Explanation of Linear Regression

同词表相邻词汇