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HomeHomework Helpmachine-learningClustering in Unsupervised Learning

Clustering in Unsupervised Learning

A method of grouping a set of observations into clusters based on their similarities, where the group memberships are unknown and the goal is to determine the group to which each observation belongs

intermediate
3 hours
Machine Learning
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Overview

Clustering is a fundamental technique in unsupervised learning that allows data scientists to group similar data points without prior labels. It plays a crucial role in exploratory data analysis, helping to uncover hidden patterns and insights within datasets. By using various algorithms like K-mean...

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Key Terms

Clustering
Grouping similar data points together.

Example: Customer clustering based on purchasing behavior.

K-means
A popular clustering algorithm that partitions data into K clusters.

Example: K-means can be used to segment customers into different groups.

Centroid
The center point of a cluster.

Example: In K-means, the centroid is recalculated after each iteration.

Silhouette Score
A metric to evaluate the quality of clusters.

Example: A higher Silhouette Score indicates better-defined clusters.

DBSCAN
A density-based clustering algorithm.

Example: DBSCAN can find clusters of varying shapes and sizes.

Distance Metric
A method to measure the distance between data points.

Example: Euclidean distance is commonly used in clustering.

Related Topics

Dimensionality Reduction
Techniques to reduce the number of features in data while preserving important information.
intermediate
Supervised Learning
A type of machine learning where the model is trained on labeled data.
intermediate
Anomaly Detection
Identifying unusual patterns that do not conform to expected behavior.
intermediate

Key Concepts

Data PointsCentroidsDistance MetricsCluster Validation