Hierarchical Clustering — A Dendrogram Instead of a Number

📰 Medium · Python

Learn hierarchical clustering using Python to group similar data points without specifying the number of clusters, and understand how dendrograms visualize the clustering process

intermediate Published 17 May 2026
Action Steps
  1. Import the necessary libraries, including scipy and matplotlib, to perform hierarchical clustering
  2. Load your dataset and preprocess it if necessary
  3. Apply hierarchical clustering using the linkage function from scipy
  4. Visualize the dendrogram using matplotlib to understand the clustering structure
  5. Use the dendrogram to determine the optimal number of clusters or to identify interesting patterns in the data
Who Needs to Know This

Data scientists and analysts can benefit from this technique to identify patterns in their data, while software engineers can use it to improve their data-driven applications

Key Insight

💡 Hierarchical clustering can be used to visualize the clustering process using a dendrogram, which can help identify patterns and relationships in the data

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📊 Use hierarchical clustering to group similar data points without specifying the number of clusters! 📈
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