K-Means Clustering
Purpose: K-means is an unsupervised learning algorithm used for clustering data into a predefined number of clusters (k).
How It Works:
- Initialization: Select k initial cluster centroids randomly.
- Assignment: Assign each data point to the nearest cluster centroid.
- Update: Recalculate the centroids of the clusters based on the assigned data points.
- Iterate: Repeat the assignment and update steps until convergence (centroids no longer change significantly).
Use Cases:
- Customer Segmentation: Grouping customers based on purchasing behavior to identify distinct customer segments.
- Image Compression: Reducing the number of colors in an image by clustering similar colors together.
- Anomaly Detection: Identifying outliers as points that do not fit well into any cluster.
- Market Segmentation: Dividing a market into distinct groups of consumers with similar needs or characteristics.