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ml-recall

#hand-computation

3 questions from Graph Neural Networks

Timed test

3 questions · 3 min · score and explanations at the end

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Question 1: Short answer

mediumAI-checkedGraph Neural Networks

Take the undirected path graph 1−2−31 - 2 - 3. A GCN uses A^=D~−1/2A~D~−1/2\hat A = \tilde D^{-1/2}\tilde A\tilde D^{-1/2} with A~=A+I\tilde A = A + I and D~ii=∑jA~ij\tilde D_{ii} = \sum_j \tilde A_{ij}. What is the entry A^12\hat A_{12}, the weight that node 1 gives to node 2?

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