Data prediction based on a PCA model

7 次查看（过去 30 天）
toka55
toka55 2017-12-4
回答： Elizabeth Reese 2017-12-6
I try to compare 5 data sets (1 training, 4 test sets) based on a PCA model calclulated from a training data set. The idea is to calculate PCA of data set 1 and then apply the data sets 2-5 to PCA model from data 1. Finally, I would like to overlay all data sets in a score diagram to show the differences.
Is there a function available in Matlab for this purpose?

请先登录，再回答此问题。

回答（1 个）

Elizabeth Reese
Elizabeth Reese 2017-12-6
There is the pca function and svd function in MATLAB that you can use to do this. There is also this Answers post which explains how to take a new point and project it to the PCA basis. You will have to calculate the scores over again for the other data sets.

类别

在 Help Center 和 File Exchange 中查找有关 Dimensionality Reduction and Feature Extraction 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by