Research Paper: Auditing as Part of the Terminology Design Life Cycle. - Hua Min; Yehoshua Perl; Yan Chen 009; Michael Halper; James Geller; Yue Wang 033 (J. Am. Medical Informatics Assoc., 2006)

Updating the Genomic Component of the UMLS Semantic Network. - Barry Cohen; Yan Chen 009; Yehoshua Perl (AMIA, 2007)

Evaluation of a UMLS Auditing Process of Semantic Type Assignments. - Huanying Gu; George Hripcsak; Yan Chen 009; C. Paul Morrey; Gai Elhanan; James J. Cimino; James Geller; Yehoshua Perl (AMIA, 2007)

Analysis of Error Concentrations in SNOMED. - Michael Halper; Yue Wang 033; Hua Min; Yan Chen 009; George Hripcsak; Yehoshua Perl; Kent A. Spackman (AMIA, 2007)

Analysis of a Study of the Users, Uses, and Future Agenda of the UMLS. - Yan Chen 009; Yehoshua Perl; James Geller; James J. Cimino (J. Am. Medical Informatics Assoc., 2007)

Structural methodologies for auditing SNOMED. - Yue Wang 033; Michael Halper; Hua Min; Yehoshua Perl; Yan Chen 009; Kent A. Spackman (J. Biomed. Informatics, 2007)

Auditing Complex Concepts in Overlapping Subsets of SNOMED. - Yue Wang 033; Duo Helen Wei; Junchuan Xu; Gai Elhanan; Yehoshua Perl; Michael Halper; Yan Chen 009; Kent A. Spackman; George Hripcsak (AMIA, 2008)

Comparing and consolidating two heuristic metaschemas. - Yan Chen 009; Yehoshua Perl; James Geller; George Hripcsak; Li Zhang 048 (J. Biomed. Informatics, 2008)

Auditing SNOMED Relationships Using a Converse Abstraction Network. - Duo Helen Wei; Michael Halper; Gai Elhanan; Yan Chen 009; Yehoshua Perl; James Geller; Kent A. Spackman (AMIA, 2009)

Research Paper: Expanding the Extent of a UMLS Semantic Type via Group Neighborhood Auditing. - Yan Chen 009; Huanying Gu; Yehoshua Perl; Michael Halper; Junchuan Xu (J. Am. Medical Informatics Assoc., 2009)

Structural group-based auditing of missing hierarchical relationships in UMLS. - Yan Chen 009; Huanying Helen Gu; Yehoshua Perl; James Geller (J. Biomed. Informatics, 2009)

Structural group auditing of a UMLS semantic type's extent. - Yan Chen 009; Huanying Gu; Yehoshua Perl; James Geller; Michael Halper (J. Biomed. Informatics, 2009)

Overcoming an obstacle in expanding a UMLS semantic type extent. - Yan Chen 009; Huanying Gu; Yehoshua Perl; James Geller (J. Biomed. Informatics, 2012)

A study of terminology auditors' performance for UMLS semantic type assignments. - Huanying Gu; Gai Elhanan; Yehoshua Perl; George Hripcsak; James J. Cimino; Julia Xu; Yan Chen 009; James Geller; C. Paul Morrey (J. Biomed. Informatics, 2012)

Auditing complex concepts of SNOMED using a refined hierarchical abstraction network. - Yue Wang 033; Michael Halper; Duo Helen Wei; Huanying Gu; Yehoshua Perl; Junchuan Xu; Gai Elhanan; Yan Chen 009; Kent A. Spackman; James T. Case; George Hripcsak (J. Biomed. Informatics, 2012)

Identifying Inconsistencies in SNOMED CT Problem Lists using Structural Indicators. - Ankur Agrawal; Yehoshua Perl; Yan Chen 009; Gai Elhanan; Mei Liu (AMIA, 2013)

Scalability of Abstraction-Network-Based Quality Assurance to Large SNOMED Hierarchies. - Christopher Ochs; Yehoshua Perl; James Geller; Michael Halper; Huanying Helen Gu; Yan Chen 009; Gai Elhanan (AMIA, 2013)

The readiness of SNOMED problem list concepts for meaningful use of electronic health records. - Ankur Agrawal; Zhe He 001; Yehoshua Perl; Duo Helen Wei; Michael Halper; Gai Elhanan; Yan Chen 009 (Artif. Intell. Medicine, 2013)

A comparative analysis of the density of the SNOMED CT conceptual content for semantic harmonization. - Zhe He 001; James Geller; Yan Chen 009 (Artif. Intell. Medicine, 2015)

A tribal abstraction network for SNOMED CT target hierarchies without attribute relationships. - Christopher Ochs; James Geller; Yehoshua Perl; Yan Chen 009; Ankur Agrawal; James T. Case; George Hripcsak (J. Am. Medical Informatics Assoc., 2015)

Scalable quality assurance for large SNOMED CT hierarchies using subject-based subtaxonomies. - Christopher Ochs; James Geller; Yehoshua Perl; Yan Chen 009; Junchuan Xu; Hua Min; James T. Case; Zhi Wei 001 (J. Am. Medical Informatics Assoc., 2015)

Structural measures to track the evolution of SNOMED CT hierarchies. - Duo Helen Wei; Huanying Helen Gu; Yehoshua Perl; Michael Halper; Christopher Ochs; Gai Elhanan; Yan Chen 009 (J. Biomed. Informatics, 2015)

Topological-Pattern-Based Recommendation of UMLS Concepts for National Cancer Institute Thesaurus. - Zhe He 001; Yan Chen 009; Sherri de Coronado; Katrina Piskorski; James Geller (AMIA, 2016)

Auditing the assignments of top-level semantic types in the UMLS semantic network to UMLS concepts. - Zhe He 001; Yehoshua Perl; Gai Elhanan; Yan Chen 009; James Geller; Jiang Bian 001 (BIBM, 2017)

Perceiving the Usefulness of the National Cancer Institute Metathesaurus for Enriching NCIt with Topological Patterns. - Zhe He 001; Yan Chen 009; James Geller (MedInfo, 2017)

Correcting Ontology Errors Simplifies Visual Complexity. - Hao Liu 025; Ling Zheng; Yehoshua Perl; Yan Chen 009; Gai Elhanan (MedInfo, 2017)

Auditing National Cancer Institute thesaurus neoplasm concepts in groups of high error concentration. - Ling Zheng; Hua Min; Yan Chen 009; Julia Xu; James Geller; Yehoshua Perl (Appl. Ontology, 2017)

Leveraging Horizontal Density Differences between Ontologies to Identify Missing Child Concepts: A Proof of Concept. - Vipina Kuttichi Keloth; Zhe He 001; Yan Chen 009; James Geller (AMIA, 2018)

Extended Analysis of Topological-Pattern-Based Ontology Enrichment. - Zhe He 001; Vipina Kuttichi Keloth; Yan Chen 009; James Geller (BIBM, 2018)

Quality Assurance of Concept Roles in the National Cancer Institute thesaurus. - Ling Zheng; Yan Chen 009; Yehoshua Perl; Michael Halper; James Geller; Sherri de Coronado (BIBM, 2018)

Complex overlapping concepts: An effective auditing methodology for families of similarly structured BioPortal ontologies. - Ling Zheng; Yan Chen 009; Gai Elhanan; Yehoshua Perl; James Geller; Christopher Ochs (J. Biomed. Informatics, 2018)

Generating Training Data for Concept-Mining for an 'Interface Terminology' Annotating Cardiology EHRs. - Vipina Kuttichi Keloth; Shuxin Zhou; Andrew J. Einstein; Gai Elhanan; Yan Chen 009; James Geller; Yehoshua Perl (BIBM, 2020)

Extending import detection algorithms for concept import from two to three biomedical terminologies. - Vipina Kuttichi Keloth; James Geller; Yan Chen 009; Julia Xu (BMC Medical Informatics Decis. Mak., 2020)

Missing lateral relationships in top-level concepts of an ontology. - Ling Zheng; Yan Chen 009; Hua Min; P. Lloyd Hildebrand; Hao Liu 025; Michael Halper; James Geller; Sherri de Coronado; Yehoshua Perl (BMC Medical Informatics Decis. Mak., 2020)

Outlier concepts auditing methodology for a large family of biomedical ontologies. - Ling Zheng; Hua Min; Yan Chen 009; Vipina Kuttichi Keloth; James Geller; Yehoshua Perl; George Hripcsak (BMC Medical Informatics Decis. Mak., 2020)

Health Ontology for Minority Equity (HOME). - Navya Martin Kollapally; Yan Chen 009; James Geller (KEOD, 2021)

An Ontology for the Social Determinants of Health Domain. - Navya Martin Kollapally; Yan Chen 009; Julia Xu; James Geller (BIBM, 2022)