Which machine learning technique revolutionized customer segmentation for major telescope manufacturers by identifying the 'casual observer' vs 'serious astronomer' divide?

The astronomy industry has been revolutionized by digital transformation and advanced customer analytics. Modern telescope manufacturers, planetarium operators, and stargazing experience providers use sophisticated data science to understand their customers and market segments. Test your knowledge about how retail analytics has transformed the business of bringing the cosmos to consumers.

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K-means clustering analysis of purchase history and engagement patterns
Simple demographic sorting based on age and income
Manual classification based on customer surveys
Random forest algorithms applied to social media interactions