Ask Ghassem - Recent questions tagged k-means

How to calculate k-means clustering with a numerical example?

Thu, 27 Jun 2019 02:16:32 +0000

Use the k-means algorithm and Euclidean distance to cluster the following 8 examples into 3 clusters:

$A1=(2,10), A2=(2,5), A3=(8,4), A4=(5,8), A5=(7,5), A6=(6,4), A7=(1,2), A8=(4,9)$.

Suppose that the initial seeds (centers of each cluster) are $A1$, $A4$ and $A7$. Run the k-means algorithm for 1 epoch only. At the end of this epoch show:

a) The new clusters (i.e. the examples belonging to each cluster)

b) The centers of the new clusters

c) Draw a 10 by 10 space with all the 8 points and show the clusters after the first epoch and the new centroids.

d) How many more iterations are needed to converge? Draw the result for each epoch

how to choose the number of clusters based on intertia and based on silhouette using K-means

Sat, 20 Oct 2018 01:04:51 +0000

how to choose the number of clusters based on intertia and based on silhouette using K-means

Great Video for K-means and PCA

Wed, 17 Oct 2018 13:46:54 +0000

PCA

https://www.youtube.com/watch?v=FgakZw6K1QQ

K-Means

https://www.youtube.com/watch?v=4b5d3muPQmA&index=10&list=PLblh5JKOoLUICTaGLRoHQDuF_7q2GfuJF&t=0s

What is k-means algorithm and how can we select K for it?

Mon, 15 Oct 2018 05:49:41 +0000

How is KNN different from k-means clustering?

Thu, 27 Sep 2018 05:25:34 +0000