Re:Principal Component Analysis Explained Visually
by melling on Sunday May 02, 2021 @09:04PM
(#27020582)
Anyone using Matlab these days? Seems a bit niche.
I used Octave in Andrew Ng’s ML class and wanted to learn more Matlab so I signed up for a Coursera course on it.
It’s a nice tool.
Re:Principal Component Analysis Explained Visually
by ingqondo on Monday May 03, 2021 @01:12AM
(#27021821)
I'm sure it's still very popular in engineering. It's still very much the lingua franca for numerical methods applied to engineering problems - there are decades of materials solving engineering problems written in MATLAB.
Re:Principal Component Analysis Explained Visually
by ur-whale on Monday May 03, 2021 @04:51AM
(#27022894)
"The Cobbler's Kids Have No Shoes"
Re:Principal Component Analysis Explained Visually
by catillac on Sunday May 02, 2021 @10:51PM
(#27021130)
Matlab is great. I won’t hire anyone who only has experience in it though, like I might hire someone who only has python numerical analysis tools experience. It’s brittle and difficult to put into production in my experience.
Re:Principal Component Analysis Explained Visually
by asdff on Monday May 03, 2021 @12:19PM
(#27026983)
It's used heavily in school still. I think statistics and data science in general have dropped it along with other relics like SAS (used today only by those people who haven't bothered learning anything other than SAS), and are sticking with R and python for functionality previously done in matlab.
Re:Principal Component Analysis Explained Visually
by nxpnsv on Monday May 03, 2021 @02:39AM
(#27022290)
Yes. We made a proof on concept thing on top of a closed source 2.4Ghz radio wave propagation simulator built in matlab. Interfacing to compiled matlab through hacky command line and .mat files is a pretty horrifying experience :)
Re:Principal Component Analysis Explained Visually
by knolan on Monday May 03, 2021 @05:02AM
(#27022946)
The stack exchange post from the parent used Matlab which is why I replied with more Matlab.
Matlab is very popular in engineering. It’s simple enough to get simple things done without needing to know too much CS.
https://www.mathworks.com/help/stats/biplot.html
The use of car data and how it correlates is a good way of showing how PCA treats each variable. For example acceleration and weight are negatively correlated while displacement and horsepower are highly correlated.