Bridging Bots: from Perception to Action via Multimodal-LMs and Knowledge Graphs

• URL: http://arxiv.org/abs/2507.09617v1
• Date: Sun, 13 Jul 2025 12:52:00 GMT
• Title: Bridging Bots: from Perception to Action via Multimodal-LMs and Knowledge Graphs
• Authors: Margherita Martorana, Francesca Urgese, Mark Adamik, Ilaria Tiddi,
• Abstract summary: Service robots are deployed to support daily living in domestic environments.<n>Current systems rely on proprietary, hard-coded solutions tied to specific hardware and software.<n>Ontologies and Knowledge Graphs (KGs) offer a solution to enable interoperability across systems.
• Score: 1.4624458429745086
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Personal service robots are deployed to support daily living in domestic environments, particularly for elderly and individuals requiring assistance. These robots must perceive complex and dynamic surroundings, understand tasks, and execute context-appropriate actions. However, current systems rely on proprietary, hard-coded solutions tied to specific hardware and software, resulting in siloed implementations that are difficult to adapt and scale across platforms. Ontologies and Knowledge Graphs (KGs) offer a solution to enable interoperability across systems, through structured and standardized representations of knowledge and reasoning. However, symbolic systems such as KGs and ontologies struggle with raw and noisy sensory input. In contrast, multimodal language models are well suited for interpreting input such as images and natural language, but often lack transparency, consistency, and knowledge grounding. In this work, we propose a neurosymbolic framework that combines the perceptual strengths of multimodal language models with the structured representations provided by KGs and ontologies, with the aim of supporting interoperability in robotic applications. Our approach generates ontology-compliant KGs that can inform robot behavior in a platform-independent manner. We evaluated this framework by integrating robot perception data, ontologies, and five multimodal models (three LLaMA and two GPT models), using different modes of neural-symbolic interaction. We assess the consistency and effectiveness of the generated KGs across multiple runs and configurations, and perform statistical analyzes to evaluate performance. Results show that GPT-o1 and LLaMA 4 Maverick consistently outperform other models. However, our findings also indicate that newer models do not guarantee better results, highlighting the critical role of the integration strategy in generating ontology-compliant KGs.

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