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Updated: Apr 18, 2026

Evidence-based Knowledge Synthesis and Hypothesis Validation: Navigating Biomedical Knowledge Bases via Explainable AI and Agentic Systems
Published on: June 13, 2025
Enabling online studies of conceptual relationships between medical terms: developing an efficient web platform
Aaron Albin1, Xiaonan Ji, Tara B Borlawsky
1Department of Biomedical Informatics, The Ohio State University, Columbus, OH, United States.
The onGrid platform efficiently queries the Unified Medical Language System (UMLS) for transitive relations between medical terms. This tool facilitates comprehensive studies on biomedical concept relationships and hypothesis generation.
Area of Science:
- Biomedical Informatics
- Ontology Engineering
- Medical Terminology
Background:
- The Unified Medical Language System (UMLS) is crucial for understanding semantic relations between biomedical concepts.
- Existing tools for extracting transitive relationships from the UMLS have limitations in relation length and data source scope.
- Efficiently studying complex conceptual relationships within the UMLS is essential for biomedical research.
Purpose of the Study:
- To develop an efficient online platform, onGrid, for studying conceptual relationships between medical terms.
- To overcome limitations of existing methods for transitive relationship extraction from the UMLS.
- To enable comprehensive analysis of biomedical concept interdependencies.
Main Methods:
- Developed the onGrid Web platform for efficient transitive queries and conceptual relationship studies using the UMLS.
- Implemented natural language query conversion to UMLS concepts.
- Enabled visualization of result paths and dynamic generation of relationship matrices for term sets.
Main Results:
- The onGrid platform supports studies on relationships within and between any two sets of biomedical concepts.
- Demonstrated effectiveness by analyzing disease-disease relationships in the Online Mendelian Inheritance in Man (OMIM) database.
- Validated onGrid's efficacy through cross-validation with the Comparative Toxicogenomics Database (CTD).
Conclusions:
- onGrid serves as an efficient tool for querying the UMLS for transitive relations.
- Facilitates in-depth study of relationships between medical terms.
- Aids in the generation of novel research hypotheses based on semantic connections.
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