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Enhancing Scientific Papers Summarization with Citation Graph

AAAI 2021 · Graph learning › Knowledge and temporal graphs · approach: Graph-based dialog systems · 44 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use citation-graph features with the source document (ablation)CgSum · SSN (inductive)R-1: 42.84 -> 44.36Helped
Use citation-graph features with the source document (ablation)CgSum · SSN (inductive)R-L: 37.59 -> 39.43Helped
Add neighborhood extraction to select informative citation subgraphs (ablation)CgSum · SSN (inductive)R-1: 44.23 -> 44.36Helped
Add residual connections to the graph encoder (ablation)CgSum · SSN (inductive)R-L: 38.95 -> 39.43Helped
Use trigram blocking during decoding (ablation)CgSum · SSN (inductive)R-1: 43.48 -> 44.36Helped
Add ROUGE credit from a relevant neighbor abstract during beam search (ablation)CgSum · SSN (inductive)R-L: 38.70 -> 39.43Helped
Add ROUGE credit from a relevant neighbor abstract during beam search (ablation)CgSum · SSN (inductive)R-2: 14.49 -> 14.69Helped
Use 1-hop rather than 2-hop neighborsCgSum · SSN (inductive)R-1: 44.36 vs 44.28Mixed
Use 1-hop rather than 2-hop neighborsCgSum · SSN (transductive)R-L: 38.89 -> 39.10Helped
Concatenate neighbors' abstracts to the source document instead of encoding graph structurePTGen + Cov · SSN (inductive)R-1: 42.84 -> 43.05No clear effect
Add copy mechanismTransformer Abs · SSN (inductive)R-1: 37.78 -> 43.35Helped
Extend BERT position embeddings to 640BertSumAbs · SSN (inductive)R-1: 41.22 -> 43.73Helped

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