HERALD: High-Fidelity Exemplar Retrieval with Adaptive Landmark Distillation for Heterophily-Aware Graph Condensation
Updated 46 min ago · first seen 11 Sept 2026
paper_01M294FP00PDSH4E5ZZVTNNHC4
- Published
- 11 Sept 2026
- T1 · 46 min ago
- arXiv
- 2609.11123
- T1 · 46 min ago
- Category
- cs.LG
- T1 · 46 min ago
Abstract
Graph condensation aims to produce a small surrogate graph that preserves the downstream node-classification performance of a much larger original graph. Existing methods rely on Weisfeiler-Lehman neighbourhood aggregation or gradient-based distribution matching, both of which assume that adjacent nodes share the same label, an assumption that breaks down under heterophily. We propose HERALD (High-fidelity Exemplar Retrieval with Adaptive Landmark Distillation), a gradient-free graph condensation framework that adapts the node scoring and feature selection in the condensation pipeline to the graph's measured heterophily. HERALD selects features via a joint Fisher-discriminability and activation-density criterion that down-weights aggregated representations on heterophilic graphs, and scores nodes by a weighted combination of prototype representativeness, decision-boundary proximity, and Local Intrinsic Dimensionality (LID), where the weights are driven by a smooth sigmoid function of the heterophily ratio. Nodes are then assembled into a condensed subgraph through score-ordered BFS expansion, Personalised PageRank pruning, and class rebalancing, all at an identical storage budget to BONSAI, enabling direct comparison. Experiments on eight benchmark datasets spanning homophilic and heterophilic settings show that HERALD matches or outperforms state-of-the-art condensers on heterophilic graphs and remains competitive on homophilic ones across four GNN architectures.
Authors 3
Sujan Chakraborty, Priyanka Saha, Saptarshi Bej
Specification
- Official page
Source:arXiv (Atom API + RSS)T1observed 46 min agohigh
- Arxiv announce type
- new
Source:arXiv (Atom API + RSS)T1observed 46 min agohigh
- arXiv id
- 2609.11123
Source:arXiv (Atom API + RSS)T1observed 46 min agohigh
- Categories
- cs.LG
Source:arXiv (Atom API + RSS)T1observed 46 min agohigh
Source:arXiv (Atom API + RSS)T1observed 46 min agohigh
- Primary category
- cs.LG
Source:arXiv (Atom API + RSS)T1observed 46 min agohigh
- Published
- 11 Sept 2026
Source:arXiv (Atom API + RSS)T1observed 46 min agohigh
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T19
Freshest observation
46 min ago
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- Authors
- Sujan Chakraborty, Priyanka Saha, Saptarshi Bej
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Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →
- New paperPaperHERALD: High-Fidelity Exemplar Retrieval with Adaptive Landmark Distillation for Heterophily-Aware Graph Condensation
New paper: HERALD: High-Fidelity Exemplar Retrieval with Adaptive Landmark Distillation for Heterophily-Aware Graph Condensation
arxiv
| Source | Document | Type | Tier | Last observed | Snapshots |
|---|---|---|---|---|---|
| arXiv (Atom API + RSS) | rss.arxiv.org/rss/cs.LG | feed | T1· Official | 46 min ago | 1 |
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