Once you know that it's linear, you know that there's some way to describe this function as matrix multiplication.

旦你知道它是线性的 你就知道有方法可用矩阵乘法来描述这个函数。

So that is the entire operation, two matrix products each with a bias added, and a simple clipping function in between.

所整个操作就是两个矩阵乘积各自加上个偏置项，并且有个简单的裁剪函数。

You could even define this as matrix vector multiplication when you put the matrix on the left of the vector, like its a function.

你甚至可把它定义为矩阵向量乘法当你把矩阵放在向量的左边 就像它是个函数。

Specifically, since it's a function that goes from three dimensions to one dimension, there will be a one by three matrix that encodes this transformation.

具体来说 因为它是个从三维到维的函数 会有个1×3的矩阵来编码这个变换。