Hello all, I am fairly new to Julia and have just started learning the basics of Matrix. I wanted to get a brief understanding of what is so different under the hood that is causing the huge time differences in each of the following approaches when technically they are basically the same operations…

Oops, that looks like a terrible counter example to what we usually trust… using LinearAlgebra using BenchmarkTools function train_func(x_train, y_train) return pinv(x_train)*y_train end; function train_func_2(x_train, y_train) # this is assuming n_rows > n_columns return inv(transpos…

Thanks a lot @zdenek_hurak for sharing the better implementation and the link to the right thread.

What is so different in each of these matrix operations?

General Usage

zdenek_hurak March 29, 2022, 12:30am 3

Here you go Efficient way of doing linear regression - #33 by stevengj

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What is so different in each of these matrix operations?

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