How can i know which attribute is PC1 in PCA

norah

hello,

i want to use PCA so when the PCs was appear i do not know which attributes is PC1, PC2 and so on.

so how can i know that .

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Accepted answers

hughesfleming68

You are decomposing the data into its principal components. This will always generate new attributes. The idea is that you are creating a new data set composed of linearly uncorrelated attributes based on variance. What you are seeing is the expected behaviour. Any kind of decomposition will give you new attributes.

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varunm1

Hello @norah

Did you go through the tutorial available in PCA operator? I can see it is providing Pc_1, Pc_2 and so on.

Can you briefly explain what you were looking for?

Thanks

norah

i look for the original name of attribute it is pc1, pc2 and so on.

hughesfleming68

norah

ok. i got it thank you very much

David_A

Hi @norah,

as already mentioned, PCA has the drawback that you can't related to the original attributes.

For alternative methods, take a look at this in-depth article from @tftemme:

https://community.rapidminer.com/discussion/45319/feature-selection-part-2-using-the-feature-selection-extension

Best,
David