Principal Component Analysis PCA

5 次查看（过去 30 天）
Alsadegh Mohamed
Alsadegh Mohamed 2018-4-7
回答： Sulaymon Eshkabilov 2021-6-1
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
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

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

KSSV
KSSV 2018-4-7
pca gives you out score of each feature. You sort the scores and pick the first fifteen scores and the respective features.
Sulaymon Eshkabilov

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

产品

Community Treasure Hunt

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

Start Hunting!

Translated by