Another way to approach the linear combination is to look at it geometrically. This is where the idea of barycentric coordinates can help. A barycentric coordinate system describes the location of a point as the weighted sum of the regular coordinates of the vertices forming a simplex. In other words, it describes a linear combination with respect to a set of points, where in -dimensional space.
FT Digital Edition: our digitised print edition。关于这个话题，WPS官方版本下载提供了深入分析
Replicate (What is Replicate?)，这一点在爱思助手下载最新版本中也有详细论述
PReLU: 斜率可学习，更灵活
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