Linguistic Initialization for Inductive Reasoning in Heterogeneous Knowledge Graphs

Daniele Pasquini, Danilo Croce, Roberto Basili


Abstract
Knowledge Graphs (KGs) provide explicit relational structure, while Large Language Models (LLMs) encode rich semantic knowledge. We propose a lightweight linguistic initialization strategy for heterogeneous link prediction that improves robustness under sparsity and imbalance. For each node, we construct a compact textual view combining intrinsic description and local neighborhood context, encode it with a pre-trained language model, and use the resulting embeddings to initialize a relation-aware GNN. This design preserves standard message passing while providing early semantically meaningful representations. Across multiple imbalance regimes and strict entity-to-entity cold-start settings, the proposed initialization consistently improves over random initialization and reduces degree-dependent degradation. Our results show that semantic grounding can be integrated into heterogeneous GNN pipelines with minimal architectural changes and strong empirical benefits.
Anthology ID:
2026.kallm-1.1
Volume:
Proceedings of the Knowledge Graphs and Large Language Models Workshop (KG-LLM) @ LREC26
Month:
May
Year:
2026
Address:
Palma, Mallorca (Spain)
Editors:
Gilles Sérasset, Katerina Gkirtzou, Michael Cochez, Jan-Christoph Kalo
Venues:
KaLLM | WS
SIG:
Publisher:
ELRA Language Resources Association (ELRA)
Note:
Pages:
1–10
Language:
External URL:
https://lrec.elra.info/lrec2026-ws-kgllm-01
DOI:
10.63317/2cxo43n6o593
Bibkey:
Cite (ACL):
Daniele Pasquini, Danilo Croce, and Roberto Basili. 2026. Linguistic Initialization for Inductive Reasoning in Heterogeneous Knowledge Graphs. In Proceedings of the Knowledge Graphs and Large Language Models Workshop (KG-LLM) @ LREC26, pages 1–10, Palma, Mallorca (Spain). ELRA Language Resources Association (ELRA).
Cite (Informal):
Linguistic Initialization for Inductive Reasoning in Heterogeneous Knowledge Graphs (Pasquini et al., KaLLM 2026)
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