A classification algorithm for supporting object-oriented views
CIKM '94 Proceedings of the third international conference on Information and knowledge management
Semantic refinement and error correction in large terminological knowledge bases
Data & Knowledge Engineering
The description logic handbook: theory, implementation, and applications
The description logic handbook: theory, implementation, and applications
An introduction to description logics
The description logic handbook
Consistency across the hierarchies of the UMLS semantic network and metathesaurus
Journal of Biomedical Informatics - Special issue: Unified medical language system
Mapping the Gene Ontology into the Unified Medical Language System: Research Papers
Comparative and Functional Genomics
Debugging Incoherent Terminologies
Journal of Automated Reasoning
Structural group auditing of a UMLS semantic type's extent
Journal of Biomedical Informatics
Classification in the KL-ONE knowledge representation system
IJCAI'83 Proceedings of the Eighth international joint conference on Artificial intelligence - Volume 1
Guest Editorial: Special Issue on Auditing of Terminologies
Journal of Biomedical Informatics
Auditing associative relations across two knowledge sources
Journal of Biomedical Informatics
The Neighborhood Auditing Tool: A hybrid interface for auditing the UMLS
Journal of Biomedical Informatics
Abstraction of complex concepts with a refined partial-area taxonomy of SNOMED
Journal of Biomedical Informatics
Overcoming an obstacle in expanding a UMLS semantic type extent
Journal of Biomedical Informatics
Journal of Biomedical Informatics
A study of terminology auditors' performance for UMLS semantic type assignments
Journal of Biomedical Informatics
Rule-based support system for multiple UMLS semantic type assignments
Journal of Biomedical Informatics
A RELATIONSHIP-CENTRIC HYBRID INTERFACE FOR BROWSING AND AUDITING THE UMLS
Journal of Integrated Design & Process Science
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The Metathesaurus of the UMLS was created by integrating various source terminologies. The inter-concept relationships were either integrated into the UMLS from the source terminologies or specially generated. Due to the extensive size and inherent complexity of the Metathesaurus, the accidental omission of some hierarchical relationships was inevitable. We present a recursive procedure which allows a human expert, with the support of an algorithm, to locate missing hierarchical relationships. The procedure starts with a group of concepts with exactly the same (correct) semantic type assignments. It then partitions the concepts, based on child-of hierarchical relationships, into smaller, singly rooted, hierarchically connected subgroups. The auditor only needs to focus on the subgroups with very few concepts and their concepts with semantic type reassignments. The procedure was evaluated by comparing it with a comprehensive manual audit and it exhibits a perfect error recall.