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PCA for selecting the most significant data

By Fayyazi | Dec 14, 2016 11:04AM CET

hello, I have some variables that I want to choose the most significant variables of them for classification some samples. I did PCA analysis on them using XLSTAT but I didn't know how to obtain these significant variables.
Thanks in advance

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By Jean Paul | Dec 14, 2016 11:30AM CET | XLSTAT Agent

Hello,

I propose two methods alternative to PCA to answer your specific question:
- Run a PLS-Discriminant Analysis and make sure you activate the VIPs in the outputs tab. VIPs reflect the discriminating power of your variables: https://help.xlstat.com/customer/en/portal/articles/2062368-partial-least-squares-discriminant-analysis-plsda-tutorial?b_id=9283
- Run a CHAID classification tree. Variables at the top of the tree are the best discriminators: https://help.xlstat.com/customer/en/portal/articles/2062258-classification-tree-in-excel-tutorial?b_id=9283

Best,

Jean Paul

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