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ml-recall

#spectral-clustering

2 questions from Clustering

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2 questions · 2 min · score and explanations at the end

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Question 1: Short answer

mediumAI-checkedClustering

The square graph has 4 nodes in a cycle (each node joined to two neighbours). Its Laplacian is L=D−AL = D - A (degree matrix minus adjacency matrix). What is the second-smallest eigenvalue of LL?

a number