Preprocessing 1. Centering & Scaling

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Chemometrics & Machine Learning in Copenhagen

Chemometrics & Machine Learning in Copenhagen

4 жыл бұрын

Here we talk about how to center and scale data to enhance the information. We are mainly in the context of chemometric machine learning so PCA, PLS and models like that.

Пікірлер: 14
@CrushingJosch
@CrushingJosch 3 жыл бұрын
Outstanding explanations and illustrations! Thank you so much for that!
@andrewkellogg7370
@andrewkellogg7370 3 жыл бұрын
you should come to berkeley and teach a class. this course is so precise and applicable!
@trunalpatil3825
@trunalpatil3825 3 жыл бұрын
Can you please provide the link to get more details (course contents, fees, and duration). Also, I would appreciate if you confirm this course available online or not, as it is not feasible to travel in pandemic. Thanks
@andrewkellogg7370
@andrewkellogg7370 3 жыл бұрын
@@trunalpatil3825 have you tried googling
@trunalpatil3825
@trunalpatil3825 3 жыл бұрын
@@andrewkellogg7370 I tried, but i didn't get accurate result. Anyways thanks
@andrewkellogg7370
@andrewkellogg7370 3 жыл бұрын
@@trunalpatil3825 The name is PLS Toolbox not PCA toolbox
@RasmusBroJ
@RasmusBroJ 2 жыл бұрын
Hi - sorry for the late reply, but thanks. Be happy to go to beautiful Berkeley
@iamsubh
@iamsubh 2 жыл бұрын
4:26 No doubt very nicely represented...just a small correction...the centered height data will be 10, -10, 0
@RasmusBroJ
@RasmusBroJ 2 жыл бұрын
Good point thanks
@trunalpatil3825
@trunalpatil3825 3 жыл бұрын
Can you please provide this tool ? link to download?
@andrewkellogg7370
@andrewkellogg7370 3 жыл бұрын
matlab costs like 2,000 USD for a license.
@andrewkellogg7370
@andrewkellogg7370 3 жыл бұрын
your best alternative is to code this in python instead, python is preferred in a ton of industries too so you wouldn't really be missing much. Then you would probably benefit more from watching a python data science playlist
@trunalpatil3825
@trunalpatil3825 3 жыл бұрын
@@andrewkellogg7370 Thank you very much Andrew, I have valid MATLAB license, but are you using PCA toolbox ? because those functionality is not available in common matlab. Also, is that PCA toolbox specially designed for the HSI preprocessing , if yes then it is available for download? Many thanks in advance.
@CrushingJosch
@CrushingJosch 3 жыл бұрын
He is using the PLS Toolbox, which is either available as a plugin to Matlab or a standalone version. eigenvector.com/software/pls-toolbox/ Sure, much of this can be done in Python, but for doing more exploratory analyses it's really useful due to the toolbox nature and rich visualization options
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