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Inductive Representation Learning on Large Graphs

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18 April 2021


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Inductive Representation Learning on Large Graphs

  • In this video, I do a deep dive into the Graph SAGE paper!
  • The first paper that started pushing the usage of GNNs for super large graphs.

  • You’ll learn about:
    • All the nitty-gritty details behind Graph SAGE
  • Graph SAGE paper
  • Chris Olah on LSTMs

Abstract

Low-dimensional embeddings of nodes in large graphs have proved extremely useful in a variety of prediction tasks, from content recommendation to identifying protein functions. However, most existing approaches require that all nodes in the graph are present during training of the embeddings; these previous approaches are inherently transductive and do not naturally generalize to unseen nodes. Here we present GraphSAGE, a general, inductive framework that leverages node feature information (e.g., text attributes) to efficiently generate node embeddings for previously unseen data. Instead of training individual embeddings for each node, we learn a function that generates embeddings by sampling and aggregating features from a node’s local neighborhood. Our algorithm outperforms strong baselines on three inductive node-classification benchmarks: we classify the category of unseen nodes in evolving information graphs based on citation and Reddit post data, and we show that our algorithm generalizes to completely unseen graphs using a multi-graph dataset of protein-protein interactions.


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