MACHINE LEARNING

APPLICATION OF SUPERVISED LEARNING

UNSUPERVISED LEARNING

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Optimum number of clusters in k-Means is found out using
A
Dendrogram
B
Elbow Method
C
Random State
D
None of these
Explanation: 

Detailed explanation-1: -The elbow method runs k-means clustering (kmeans number of clusters) on the dataset for a range of values of k (say 1 to 10) In the elbow method, we plot mean distance and look for the elbow point where the rate of decrease shifts. For each k, calculate the total within-cluster sum of squares (WSS).

Detailed explanation-2: -The elbow method runs k-means clustering on the dataset for a range of values for k (say from 1-10) and then for each value of k computes an average score for all clusters. By default, the distortion score is computed, the sum of square distances from each point to its assigned center.

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