I need a code for doing PCA.
2 views (last 30 days)
Show older comments
i need to see which data/column is hampering my predicted accuracy.
the xls file is given below. can anyone help me for proper code or just saying that particular data/column hampering my accuracy?
0 Comments
Answers (1)
the cyclist
on 19 Mar 2022
Please take a look at my accepted answer to another question about PCA. It is effectively a tutorial on using PCA in MATLAB.
You don't explain much here, but I'm guessing the last column of your data is the number you are trying to predict, using the other columns as predictors?
Doing a PCA on the first 39 columns does look like a good idea. The first two principal components capture over 99% of the variation.
Then you could do a logistic regression (perhaps using fitglm) to predict the last column from the first two principal components.
0 Comments
See Also
Categories
Find more on Dimensionality Reduction and Feature Extraction in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!