Principal Component Analysis PCA
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I need to use PCA for features selection. Foe example if the number of features = 300 the result by PCA = 15. I used PCA command in matlab but the result complete transformation of the feature (300), but I need only the important features to save the accuracy.
1 个评论
Image Analyst
2018-4-7
OK good luck. Do you have a question (rather than an announcement)? If so, you forgot to attach your code and code. So do that then please ask your question after reading this: http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer
回答（2 个）
KSSV
2018-4-7
0 个投票
pca gives you out score of each feature. You sort the scores and pick the first fifteen scores and the respective features.
Sulaymon Eshkabilov
2021-6-1
0 个投票
Here are two nice documentation that address your raised questions:
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2018-4-7
2021-6-1
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