Unsupervised Learning

Optimize and interpret hard clustering and mixture-model assignments.

Use https://mlprep.iwase.dev/practice/machine-learning/unsupervised-learning/. This is a Practice set, not a Screening result. If window.mlPrepAgent is available, read local attempt history before planning. Help me work through the set without revealing full answers first, and save each real attempt through the bridge with recorded_by agent and agent_session_id when available.

Recommended resources

Probabilistic Machine Learning: An Introduction — online draft dated 2025-04-18 — Kevin P. Murphy and MIT Press

Instructions

Write the objective or posterior normalization before updating assignments.

Ordered items

One k-means assignment and updateUnsupervised Learning · Easy · 7 min · Original
Mixture responsibilities and EMUnsupervised Learning · Medium · 7 min · Original
Expectation-maximization for factor analysisUnsupervised Learning · Hard · 30 min · External

Completion

Perform one k-means update and one mixture responsibility calculation.

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Theory