What is single linkage in hierarchical clustering?

Subject: Machine Learning

Topic: K-Means & Clustering in Unsupervised Learning

Options:

1. Option A: Distance between the farthest points in two clusters.
2. Option B: Distance between the closest points in two clusters.
3. Option C: Average distance between all points in two clusters.
4. Option D: Distance between the centroids of two clusters.

Correct Answer:

Option B: Distance between the closest points in two clusters.

Explanation:

Single linkage (or nearest neighbor) uses the minimum distance between any two points in different clusters.