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Yixin Peng

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#machine learning Preprint Sep 2026

Temporal Heterogeneous Graph Pretraining for Relational Deep Learning

Relational deep learning models database rows and foreign-key links as a heterogeneous graph for prediction from record attributes and relational context. These graphs contain two distinct temporal signals: record age changes with the prediction cutoff, while intervals between observed records remain fixed. Prior work...

Yi-Xin Peng, Er Jin, Diego Collarana et al. · 0 citations
#machine learning Preprint Jul 2026

VisKG-LM: Compiling Knowledge Graphs into Visual Memory for Multiple-Choice Question Answering

Knowledge graphs are usually integrated into question answering by encoding a retrieved subgraph with a graph neural network and fusing it with the language model in the online inference path. The same subgraph is therefore re-encoded from scratch every time a pair is scored, across training epochs, seeds, and evaluati...

Yixin Peng, Er Jin, Shi-Wei Luo et al. · 0 citations

THGFM: Dual-Branch Temporal Heterogeneous Graph Fusion Model

Temporal heterogeneous graphs offer a natural abstraction for dynamic relational systems in which diverse node and relation types co-exist and evolve over time. Learning on such graphs requires jointly modeling cross-type structural heterogeneity and the temporal dynamics of interactions, yet existing methods still str...

Yixin Peng, Diego Collarana, Er Jin et al. · 0 citations

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