AgentMap: Joint Equivalence and Subsumption Discovery for Ontology Matching

• URL: http://arxiv.org/abs/2607.27130v1
• Date: Wed, 29 Jul 2026 16:58:10 GMT
• Title: AgentMap: Joint Equivalence and Subsumption Discovery for Ontology Matching
• Abstract summary: We introduce Hybrid Ontology Matching (HOM), a new OM task that unifies equivalence and subsumption discovery.<n>We propose a Large Language Model (LLM)-based multi-agent OM framework AgentMap that is implemented by a series of interdependent semantic decisions.<n> Experimental results show that AgentMap achieves promising performance on the hybrid setting.
• Score: 15.085939995703667
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Ontology matching (OM) has traditionally been formulated as either equivalence discovery or subsumption matching. The existing OM systems identify only one type of semantic correspondence and cannot simultaneously discover equivalence and subsumption mappings. In this paper, we introduce Hybrid Ontology Matching (HOM), a new OM task that unifies equivalence and subsumption discovery, and accordingly propose a Large Language Model (LLM)-based multi-agent OM framework AgentMap that is implemented by a series of interdependent semantic decisions. Given a concept in the source ontology, AgentMap integrates semantic retrieval, hierarchical search, and collaborative multi-agent LLM reasoning to progressively explore the target ontology, identifying either the equivalent concept, if one exists, or the most fine-grained subsumer. We further extend four OM datasets for a HOM benchmark and evaluate AgentMap under hybrid, equivalence-only, and subsumption-only settings. Experimental results show that AgentMap achieves promising performance on the hybrid setting, and at the same time outperforms equivalence matching and subsumption matching baselines on the equivalence-only and subsumption-only settings, respectively.

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