HierPromptLM uses hierarchical text prompts and two language-model pretraining tasks to jointly encode node text and heterogeneous graph structure, outperforming prior text-plus-GNN baselines on DBLP and OAG.
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HierPromptLM: A Pure PLM-based Framework for Representation Learning on Heterogeneous Text-rich Networks
HierPromptLM uses hierarchical text prompts and two language-model pretraining tasks to jointly encode node text and heterogeneous graph structure, outperforming prior text-plus-GNN baselines on DBLP and OAG.