IBPL: Information Bottleneck-based Prompt Learning for graph out-of-distribution detection

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Yanan Cao, Fengzhao Shi, Qing Yu, Xixun Lin, Chuan Zhou, Lixin Zou, Peng Zhang, Zhao Li, Dawei Yin

Published: 2025, Last Modified: 16 Jan 2026Neural Networks 2025EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: Highlights•We study how to eliminate the overlapping features to enlarge the score gap.•We propose the IB-based graph prompt to optimize node features and graph structure.•Our method yields the superior results over existing strong approaches empirically.