An Enriched Unified Medical Language System Semantic Network with a Multiple Subsumption Hierarchy | Zendy

Li Zhang | Zendy; Yehoshua Perl | Zendy; Michael Halper | Zendy; James Geller | Zendy; James J. Cimino | Zendy

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An Enriched Unified Medical Language System Semantic Network with a Multiple Subsumption Hierarchy

Author(s) -

Li Zhang,

Yehoshua Perl,

Michael Halper,

James Geller,

James J. Cimino

Publication year - 2004

Publication title -

journal of the american medical informatics association

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.614

H-Index - 150

eISSN - 1527-974X

pISSN - 1067-5027

DOI - 10.1197/jamia.m1269

Subject(s) - unified medical language system , computer science , hierarchy , semantic network , natural language processing , graph , type (biology) , semantic computing , artificial intelligence , directed acyclic graph , theoretical computer science , semantic web , algorithm , ecology , economics , market economy , biology

The Unified Medical Language System's (UMLS's) Semantic Network's (SN's) two-tree structure is restrictive because it does not allow a semantic type to be a specialization of several other semantic types. In this article, the SN is expanded into a multiple subsumption structure with a directed acyclic graph (DAG) IS-A hierarchy, allowing a semantic type to have multiple parents. New viable IS-A links are added as warranted.

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