Generative Learning on Dynamic Text-Attributed Graphs
Zhenyu Yang, Yuhong Chen, Binli Luo, Xiaodong Li, Xiaolin Hu, Hui Li, Jintang Li
Dynamic text-attributed graphs capture evolving interactions among entities with rich textual information, but future-link prediction remains difficult when nodes have little interaction history or appear as new targets. We propose \method, a generative framework that represents nodes with compact semantic identifiers (SIDs) learned from text and autoregressively predicts a target SID conditioned on the source SID, recent interaction events, and relative time gaps. A lightweight structural calibration further incorporates repetition, co-occurrence, and popularity. At inference time, \method encodes each query context once and reuses SID likelihoods to rank prescribed candidates, providing a candidate-efficient prediction interface. Experiments on nine datasets show broadly competitive performance across domains and graph densities. Source-side inductive evaluations demonstrate that text-derived SIDs provide a useful representation when a test source has no observed interaction history, while two recommendation-oriented case studies evaluate controlled new-user adaptation and first-arrival ranking for inductive new items. Further analyses characterize SID uniqueness, capacity, and temporal stability. Overall, the results support combining text-derived SIDs with temporal histories for dynamic link prediction.
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