Is it wise to run PCA on all segmentation data-sets before trying to cluster it first?

Hi Joseph, one of the main uses of PCA is to reduce the dimensions of the data set. That's especially worthwhile when there are a lot of features in the data, and fewer data points. This leads to a phenomenon, known as the 'curse of dimensionality', which can be avoided by employing techniques such as PCA. That's why we perform PCA before clustering. Best, Eli

Reference:"How to Combine PCA and K-means in Python?" Why does the dimensionality of the matrix get reduced to a 4 X W matrix for the output in the Principal Component Data frame? Are the rows in my original data being dropped? -Jade

back

Follow this topic

Joseph Ben Jacob

Last answered:

June 26, 2020

Posted on:

March 30, 2020

PCA

2 answers ( 0 marked as helpful)

Elitsa Kaloyanova

Posted on:

March 31, 2020

Jade Preston

Posted on:

June 26, 2020

Submit an answer

Content