Relationship Structures and Semantic Type Assignments of the UMLS Enriched Semantic Network
نویسندگان
چکیده
منابع مشابه
Relationship Structures and Semantic Type Assignments of the UMLS Enriched Semantic Network
Design: The technique to derive the ESN’s relationship structures finds all newly inherited relationships in the ESN. All such relationships are audited for semantic validity, and the blocking mechanism is used to block invalid relationships. The mapping technique to derive the ESN’s semantic type assignments uses current SN semantic type assignments and preserves nonredundant categorizations, ...
متن کاملModel Formulation: Relationship Structures and Semantic Type Assignments of the UMLS Enriched Semantic Network
OBJECTIVE The Enriched Semantic Network (ESN) was introduced as an extension of the Unified Medical Language System (UMLS) Semantic Network (SN). Its multiple subsumption configuration and concomitant multiple inheritance make the ESN's relationship structures and semantic type assignments different from those of the SN. A technique for deriving the relationship structures of the ESN's semantic...
متن کاملEvaluation of a UMLS Auditing Process of Semantic Type Assignments
The UMLS is a terminological system that integrates many source terminologies. Each concept in the UMLS is assigned one or more semantic types from the Semantic Network, an upper level ontology for biomedicine. Due to the complexity of the UMLS, errors exist in the semantic type assignments. Finding assignment errors may unearth modeling errors. Even with sophisticated tools, discovering assign...
متن کاملRule-based support system for multiple UMLS semantic type assignments
BACKGROUND When new concepts are inserted into the UMLS, they are assigned one or several semantic types from the UMLS Semantic Network by the UMLS editors. However, not every combination of semantic types is permissible. It was observed that many concepts with rare combinations of semantic types have erroneous semantic type assignments or prohibited combinations of semantic types. The correcti...
متن کاملDesigning metaschemas for the UMLS enriched semantic network
The enriched semantic network (ESN) has previously been presented as an enhancement of the semantic network (SN) of the UMLS. The ESN's hierarchy is a DAG (Directed Acyclic Graph) structure allowing for multiple parents. The ESN is thus more complex than the SN and can be more difficult to view and comprehend. We have previously introduced the notion of a metaschema for the SN as a compact abst...
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ژورنال
عنوان ژورنال: Journal of the American Medical Informatics Association
سال: 2005
ISSN: 1067-5027,1527-974X
DOI: 10.1197/jamia.m1605