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HOPE: Heterophily-Aware Open-Set Node Classification with Pseudo-Extrapolation

Dai, Yumeng et al.
arXiv (All) · Papers
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machine-learning
Standard open-set node classification methods rely on the homophily assumption, where connected nodes share labels. However, real-world graphs are often heterophilic, exposing the limitations of current methods and posing new challenges to open-set node classification. On the one hand, cross-class c
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