Hierarchical clustering: merge nearest, read the dendrogram

📰 Dev.to · Devanshu Biswas

Learn hierarchical clustering to overcome K-Means' cluster count limitation and visualize data relationships with dendrograms

intermediate Published 5 Jul 2026
Action Steps
  1. Apply hierarchical clustering to a dataset using a library like Scikit-learn
  2. Visualize the resulting dendrogram to understand data relationships
  3. Use the dendrogram to determine the optimal number of clusters
  4. Compare the results of hierarchical clustering with K-Means for different cluster counts
  5. Configure the clustering algorithm to use different distance metrics or linkage methods
Who Needs to Know This

Data scientists and analysts can benefit from hierarchical clustering to identify patterns in their data without predefining cluster counts, while data engineers can use this technique to inform their data pipeline designs

Key Insight

💡 Hierarchical clustering allows you to visualize data relationships and determine the optimal number of clusters without predefining it

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📊 Ditch the guesswork of K-Means cluster count with hierarchical clustering! 📈

Key Takeaways

Learn hierarchical clustering to overcome K-Means' cluster count limitation and visualize data relationships with dendrograms

Full Article

K-Means has one annoying question it asks before you've even looked at your data: how many clusters?...
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