Efficient Generation of Optimal Prefix Code: Equiprobable Words Using Unequal Cost Letters. - Yehoshua Perl; M. R. Garey; Shimon Even (J. ACM, 1975)

Optimal sequential arrangement of evaluation trees for boolean functions. - Yehoshua Perl; Yuri Breitbart (Inf. Sci., 1976)

Understanding the Complexity of Interpolation Search. - Yehoshua Perl; Edward M. Reingold (Inf. Process. Lett., 1977)

Shortest Paths in a Network with Two Cost Functions. - Yehoshua Perl (Jerusalem Conference on Information Technology, 1978)

Interpolation Search - A Log Log N Search. - Yehoshua Perl; Alon Itai; Haim Avni (Commun. ACM, 1978)

Finding Two Disjoint Paths Between Two Pairs of Vertices in a Graph. - Yehoshua Perl; Yossi Shiloach (J. ACM, 1978)

Generalized fibonacci maximum path graphs. - Martin Charles Golumbic; Yehoshua Perl (Discret. Math., 1979)

Efficient Optimization of Monotonic Functions on Trees. - Yehoshua Perl; Yossi Shiloach (CAAP, 1981)

Deficient generalized Fibonacci maximum path graphs. - Yehoshua Perl; Shmuel Zaks (Discret. Math., 1981)

Max-Min Tree Partitioning. - Yehoshua Perl; Stephen R. Schach (J. ACM, 1981)

The Complexity of Identifying Redundant and Essential Elements. - Shlomo Moran; Yehoshua Perl (J. Algorithms, 1981)

Mean flow scheduling and optimal construction of a treelike communication network. - Yehoshua Perl; Yaacov Yesha (Networks, 1981)

Is Text Compression by Prefizes and Suffixes Practical? - Aviezri S. Fraenkel; Moshe Mor; Yehoshua Perl (SIGIR, 1982)

A Shifting Algorithm for Min-Max Tree Partitioning. - Ronald I. Becker; Stephen R. Schach; Yehoshua Perl (J. ACM, 1982)

The complexity of finding maximum disjoint paths with length constraints. - Alon Itai; Yehoshua Perl; Yossi Shiloach (Networks, 1982)

On the Complexity of Edge Labelings for Trees. - Yehoshua Perl; Shmuel Zaks (Theor. Comput. Sci., 1982)

The Balanced Sorting Network. - Martin Dowd; Yehoshua Perl; Michael E. Saks (PODC, 1983)

Is Text Compression by Prefixes and Suffixes Practical? - Aviezri S. Fraenkel; Moshe Mor; Yehoshua Perl (Acta Informatica, 1983)

Shifting Algorithms for Tree Partitioning with General Weighting Functions. - Ronald I. Becker; Yehoshua Perl (J. Algorithms, 1983)

Circuit partitioning with size and connection constraints. - Yehoshua Perl; Marc Snir (Networks, 1983)

Clustering and domination in perfect graphs. - Derek G. Corneil; Yehoshua Perl (Discret. Appl. Math., 1984)

Optimum Split Trees. - Yehoshua Perl (J. Algorithms, 1984)

Heuristics for finding a maximum number of disjoint bounded paths. - D. Ronen; Yehoshua Perl (Networks, 1984)

Efficient Variants of Huffman Codes in High Level Languages. - Yaacov Choueka; Shmuel T. Klein; Yehoshua Perl (SIGIR, 1985)

Finding the two-core of a tree. - Ronald I. Becker; Yehoshua Perl (Discret. Appl. Math., 1985)

Efficient implementation of a shifting algorithm. - Yehoshua Perl; Uzi Vishkin (Discret. Appl. Math., 1985)

A Linear Recognition Algorithm for Cographs. - Derek G. Corneil; Yehoshua Perl; Lorna K. Stewart (SIAM J. Comput., 1985)

Digraphs with maximum number of paths and cycles. - Yehoshua Perl (Networks, 1987)

Cascading LZW Algorithm with Huffman Coding: A Variable to Variable Length Compression Algorithm. - Yehoshua Perl; Ashish Mehta (Great Lakes Computer Science Conference, 1989)

Image enhancement by path partitioning. - Mario Lucertini; Yehoshua Perl; Bruno Simeone (Recent Issues in Pattern Analysis and Recognition, 1989)

Better understanding of batcher's merging networks. - Yehoshua Perl (Discret. Appl. Math., 1989)

The periodic balanced sorting network. - Martin Dowd; Yehoshua Perl; Larry Rudolph; Michael E. Saks (J. ACM, 1989)

A Theoretical Underlying Dual Model for Knowledge-Based Systems. - Erich J. Neuhold; James Geller; Yehoshua Perl; Volker Turau (ICSI, 1990)

Best location of service centers in a treelike network under budget constraints. - James McHugh; Yehoshua Perl (Discret. Math., 1990)

The Cascading of the LZW Compression Algorithm with Arithmetic Coding. - Yehoshua Perl; Venkat Maram; Nageshwar Kadakuntla (Data Compression Conference, 1991)

Structural Schema Integration in Heterogeneous Multi-Database Systems using the Dual Model. - James Geller; Yehoshua Perl; Erich J. Neuhold (RIDE-IMS, 1991)

Structure and Semantics in OODB Class Specifications. - James Geller; Yehoshua Perl; Erich J. Neuhold (SIGMOD Rec., 1991)

"Part" Relations for Object-Oriented Databases. - Michael Halper; James Geller; Yehoshua Perl (ER, 1992)

A Graphical Schema Representation for Object-Oriented Databases. - Michael Halper; James Geller; Yehoshua Perl; Erich J. Neuhold (IDS, 1992)

Structural schema integration with full and partial correspondence using the Dual Model. - James Geller; Yehoshua Perl; Erich J. Neuhold; Amit P. Sheth (Inf. Syst., 1992)

Arithmetic Interpolation Search for Alphabetic Tables. - Yehoshua Perl; Loizos Gabriel (IEEE Trans. Computers, 1992)

Value Propagation in Object-Oriented Database Part Hierarchies. - Michael Halper; James Geller; Yehoshua Perl (CIKM, 1993)

The OODB Path-Method Generator (PMG) Using Precomputed Access Relevance. - Ashish Mehta; James Geller; Yehoshua Perl; Erich J. Neuhold (CIKM, 1993)

Computing Access Relevance to Support Path-Method Generation in Interoperable Multi-OODB. - Ashish Mehta; James Geller; Yehoshua Perl; Peter Fankhauser (RIDE-IMS, 1993)

A Shifting Algorithm for Constrained min-max Partition on Trees. - Eliezer Agasi; Ronald I. Becker; Yehoshua Perl (Discret. Appl. Math., 1993)

Most Uniform Path Partitioning and its Use in Image Processing. - Mario Lucertini; Yehoshua Perl; Bruno Simeone (Discret. Appl. Math., 1993)

Structural integration: Concepts and case study. - James Geller; Yehoshua Perl; Philip Cannata; Amit P. Sheth; Erich J. Neuhold (J. Syst. Integr., 1993)

Integrating a Part Relationship Into an Open OODB System Using Metaclasses. - Michael Halper; James Geller; Yehoshua Perl; Wolfgang Klas (CIKM, 1994)

The Generalized Class of g-Chaln Periodic Sorting Networks. - David Nassimi; Yehoshua Perl; Ronald I. Becker (IPPS, 1994)

The OODB Ownership Relationship. - Oscar Yang; Michael Halper; James Geller; Yehoshua Perl (OOIS, 1994)

The Shifting Algorithm Technique for the Partitioning of Trees. - Ronald I. Becker; Yehoshua Perl (Discret. Appl. Math., 1995)

Modeling a Vocabulary in an Object-Oriented Database. - Li-min Liu; Michael Halper; Huanying Gu; James Geller; Yehoshua Perl (CIKM, 1996)

Identifying a Forest Hierarchy in an OODB Specification Hierarchy Satisfying Disciplined Modeling. - Yehoshua Perl; James Geller; Huanying Gu (CoopIS, 1996)

Computing Access Relevance for Path-Method Generation in OODBs and IM-OODB. - Ashid Metha; James Geller; Yehoshua Perl; Peter Fankhauser (J. Intell. Inf. Syst., 1996)

Partitioning a vocabulary's IS-A hierarchy into trees. - Huanying Gu; Yehoshua Perl; James Geller; Michael Halper; James J. Cimino; Mansnimar Singh (AMIA, 1997)

Converting an integrated hospital formulary into an object-oriented database representation. - Huanying Gu; Li-min Liu; Michael Halper; James Geller; Yehoshua Perl (AMIA, 1998)

An OODB Part-Whole Model: Semantics, Notation and Implementation. - Michael Halper; James Geller; Yehoshua Perl (Data Knowl. Eng., 1998)

The New Class of g-Chain Periodic Sorters. - Ronald I. Becker; David Nassimi; Yehoshua Perl (J. Parallel Distributed Comput., 1998)

The OODB Path-Method Generator (PMG) Using Access Weights and Precomputed Access Relevance. - Ashish Mehta; James Geller; Yehoshua Perl; Erich J. Neuhold (VLDB J., 1998)

Modeling the UMLS using an OODB. - Huanying Gu; Yehoshua Perl; James Geller; Michael Halper; Li-min Liu; James J. Cimino (AMIA, 1999)

A methodology for partitioning a vocabulary hierarchy into trees. - Huanying Gu; Yehoshua Perl; James Geller; Michael Halper; Mansnimar Singh (Artif. Intell. Medicine, 1999)

Controlled Vocabularies in OODBs: Modeling Issues and Implementation. - Li-min Liu; Michael Halper; James Geller; Yehoshua Perl (Distributed Parallel Databases, 1999)

Model Formulation: Benefits of an Object-oriented Database Representation for Controlled Medical Terminologies. - Huanying Gu; Michael Halper; James Geller; Yehoshua Perl (J. Am. Medical Informatics Assoc., 1999)

Partitioning the Semantic Network of the UMLS. - Zong Chen; Michael Halper; James Geller; Yehoshua Perl (AMIA, 2000)

How to Partition a Complex Schema of a Medical Terminology. - Huanying Helen Gu; Yehoshua Perl; Michael Halper; James Geller; Feng-shen Kuo; James J. Cimino (AMIA, 2000)

Research Paper: Representing the UMLS as an Object-oriented Database: Modeling Issues and Advantages. - Huanying Gu; Yehoshua Perl; James Geller; Michael Halper; Li-min Liu; James J. Cimino (J. Am. Medical Informatics Assoc., 2000)

A metaschema of the UMLS based on a partition of its semantic network. - Michael Halper; Zong Chen; James Geller; Yehoshua Perl (AMIA, 2001)

The Importance of Ownership for E-Commerce. - James Geller; Yehoshua Perl; Li-min Liu; C. Rush; Michael Halper (DS-9, 2001)

Using the metaschema to audit UMLS classification errors. - Huanying Helen Gu; Hua Min; Yi Peng; Li Zhang 048; Yehoshua Perl (AMIA, 2002)

Auditing the UMLS for redundant classifications. - Yi Peng; Michael Halper; Yehoshua Perl; James Geller (AMIA, 2002)

Enriching the structure of the UMLS semantic network. - Li Zhang 048; Yehoshua Perl; Michael Halper; James Geller; James J. Cimino (AMIA, 2002)

The cohesive metaschema: a higher-level abstraction of the UMLS Semantic Network. - Yehoshua Perl; Zong Chen; Michael Halper; James Geller; Li Zhang 048; Yi Peng (J. Biomed. Informatics, 2002)

Partitioning the UMLS semantic network. - Zong Chen; Yehoshua Perl; Michael Halper; James Geller; Huanying Gu (IEEE Trans. Inf. Technol. Biomed., 2002)

Evaluation and application of a semantic network partition. - James Geller; Yehoshua Perl; Michael Halper; Zong Chen; Huanying Gu (IEEE Trans. Inf. Technol. Biomed., 2002)

Using OODB Modeling to Partition a Vocabulary in Structurally and Semantically Uniform Concept Groups. - Li-min Liu; Michael Halper; James Geller; Yehoshua Perl (IEEE Trans. Knowl. Data Eng., 2002)

Frameworks for incorporating semantic relationships into object-oriented database systems. - Michael Halper; Li-min Liu; James Geller; Yehoshua Perl (Concurr. Comput. Pract. Exp., 2003)

Enhancing OODB semantics to support browsing in an OODB vocabulary representation. - Li-min Liu; James Geller; Yehoshua Perl (Concurr. Comput. Pract. Exp., 2003)

Semantic refinement and error correction in large terminological knowledge bases. - James Geller; Huanying Gu; Yehoshua Perl; Michael Halper (Data Knowl. Eng., 2003)

Consistency across the hierarchies of the UMLS Semantic Network and Metathesaurus. - James J. Cimino; Hua Min; Yehoshua Perl (J. Biomed. Informatics, 2003)

Research on structural issues of the UMLS - past, present, and future. - Yehoshua Perl; James Geller (J. Biomed. Informatics, 2003)

Designing metaschemas for the UMLS enriched semantic network. - Li Zhang 048; Yehoshua Perl; Michael Halper; James Geller (J. Biomed. Informatics, 2003)

Auditing concept categorizations in the UMLS. - Huanying Gu; Yehoshua Perl; Gai Elhanan; Hua Min; Li Zhang 048; Yi Peng (Artif. Intell. Medicine, 2004)

Model Formulation: An Enriched Unified Medical Language System Semantic Network with a Multiple Subsumption Hierarchy. - Li Zhang 048; Yehoshua Perl; Michael Halper; James Geller; James J. Cimino (J. Am. Medical Informatics Assoc., 2004)

Editorial: Ontology Challenges: A Thumbnail Historical Perspective. - James Geller; Yehoshua Perl; Jintae Lee (Knowl. Inf. Syst., 2004)

Contextual Partitioning for Comprehension of OODB Schemas. - Huanying Gu; Yehoshua Perl; Michael Halper; James Geller; Erich J. Neuhold (Knowl. Inf. Syst., 2004)

An expert study evaluating the UMLS lexical metaschema. - Li Zhang 048; George Hripcsak; Yehoshua Perl; Michael Halper; James Geller (Artif. Intell. Medicine, 2005)

A lexical metaschema for the UMLS semantic network. - Li Zhang 048; Yehoshua Perl; Michael Halper; James Geller; George Hripcsak (Artif. Intell. Medicine, 2005)

Model Formulation: Relationship Structures and Semantic Type Assignments of the UMLS Enriched Semantic Network. - Li Zhang 048; Michael Halper; Yehoshua Perl; James Geller; James J. Cimino (J. Am. Medical Informatics Assoc., 2005)

An Application Intersection Marketing Ontology. - Xuan Zhou 007; James Geller; Yehoshua Perl; Michael Halper (Essays in Memory of Shimon Even, 2006)

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)

Ownership as a conceptual modeling construct. - Michael Halper; Li-min Liu; James Geller; Yehoshua Perl (Data Knowl. Eng., 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)

Complexity Measures to Track the Evolution of a SNOMED Hierarchy. - Duo Helen Wei; Yue Wang 033; Yehoshua Perl; Junchuan Xu; Michael Halper; Kent A. Spackman (AMIA, 2008)

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

Automated comparative auditing of NCIT genomic roles using NCBI. - Barry Cohen; Marc Oren; Hua Min; Yehoshua Perl; Michael Halper (J. Biomed. Informatics, 2008)

Comparing Inconsistent Relationship Configurations Indicating UMLS Errors. - James Geller; C. Paul Morrey; Junchuan Xu; Michael Halper; Gai Elhanan; Yehoshua Perl; George Hripcsak (AMIA, 2009)

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)

Using WordNet synonym substitution to enhance UMLS source integration. - Kuo-Chuan Huang; James Geller; Michael Halper; Yehoshua Perl; Junchuan Xu (Artif. Intell. Medicine, 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)

Research Paper: Modeling Multi-typed Structurally Viewed Chemicals with the UMLS Refined Semantic Network. - Ling Chen 007; C. Paul Morrey; Huanying Gu; Michael Halper; Yehoshua Perl (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)

Special Issue on Auditing of Terminologies. - James Geller; Yehoshua Perl; Michael Halper; Ronald Cornet (J. Biomed. Informatics, 2009)

The Neighborhood Auditing Tool: A hybrid interface for auditing the UMLS. - C. Paul Morrey; James Geller; Michael Halper; Yehoshua Perl (J. Biomed. Informatics, 2009)

Source authenticity in the UMLS - A case study of the Minimal Standard Terminology. - Gai Elhanan; Kuo-Chuan Huang; Yehoshua Perl (J. Biomed. Informatics, 2010)

Resolution of redundant semantic type assignments for organic chemicals in the UMLS. - C. Paul Morrey; Ling Chen 007; Michael Halper; Yehoshua Perl (Artif. Intell. Medicine, 2011)

Scalability of Piecewise Synonym Identification in Integration of SNOMED into the UMLS. - Kuo-Chuan Huang; James Geller; Michael Halper; Gai Elhanan; Yehoshua Perl (Int. J. Comput. Model. Algorithms Medicine, 2011)

A survey of SNOMED CT direct users, 2010: impressions and preferences regarding content and quality. - Gai Elhanan; Yehoshua Perl; James Geller (J. Am. Medical Informatics Assoc., 2011)

A Relationship-Centric Hybrid Interface for Browsing and Auditing the UMLS. - Christopher Ochs; James Geller; Yehoshua Perl (Trans. SDPS, 2011)

Using Gamification and Crowdsourcing to Enhance Terminology Auditing. - David Daudelin; James Geller; Yehoshua Perl (AMIA, 2012)

New Abstraction Networks and a New Visualization Tool in Support of Auditing the SNOMED CT Content. - James Geller; Christopher Ochs; Yehoshua Perl; Junchuan Xu (AMIA, 2012)

Deriving an Abstraction Network to Support Quality Assurance in OCRe. - Christopher Ochs; Ankur Agrawal; Yehoshua Perl; Michael Halper; Samson W. Tu; Simona Carini; Ida Sim; Natalya Fridman Noy; Mark A. Musen; James Geller (AMIA, 2012)

Clinical clarity versus terminological order: the readiness of SNOMED CT concept descriptors for primary care. - Zhe He 001; Michael Halper; Yehoshua Perl; Gai Elhanan (MIX-HS, 2012)

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)

Abstraction of complex concepts with a refined partial-area taxonomy of SNOMED. - Yue Wang 033; Michael Halper; Duo Helen Wei; Yehoshua Perl; James Geller (J. Biomed. Informatics, 2012)

A chemical specialty semantic network for the Unified Medical Language System. - C. Paul Morrey; Yehoshua Perl; Michael Halper; Ling Chen 007; Huanying Gu (J. Cheminformatics, 2012)

A Family-Based Framework for Supporting Quality Assurance of Biomedical Ontologies in BioPortal. - Zhe He 001; Christopher Ochs; Ankur Agrawal; Yehoshua Perl; Dimitris Zeginis; Konstantinos A. Tarabanis; Gai Elhanan; Michael Halper; Natasha F. Noy; James Geller (AMIA, 2013)

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)

Auditing Redundant Import in Reuse of a Top Level Ontology for the Drug Discovery Investigations Ontology. - Zhe He 001; Christopher Ochs; Larisa N. Soldatova; Yehoshua Perl; Sivaram Arabandi; James Geller (VDOS+DO@ICBO, 2013)

Choosing the Granularity of Abstraction Networks for Orientation and Quality Assurance of the Sleep Domain Ontology. - Christopher Ochs; Zhe He 001; Yehoshua Perl; Sivaram Arabandi; Michael Halper; James Geller (ICBO, 2013)

BLUSNO: A System for Orientation, Visualization, and Quality Assurance of SNOMED CT Using Abstraction Networks. - Christopher Ochs; Yehoshua Perl; James Geller (ICBO, 2013)

Identifying Problematic Concepts in SNOMED CT using a Lexical Approach. - Ankur Agrawal; Yehoshua Perl; Gai Elhanan (MedInfo, 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)

Rule-based support system for multiple UMLS semantic type assignments. - James Geller; Zhe He 001; Yehoshua Perl; C. Paul Morrey; Julia Xu (J. Biomed. Informatics, 2013)

Drug-drug Interaction Discovery Using Abstraction Networks for "National Drug File - Reference Terminology" Chemical Ingredients. - Christopher Ochs; Ling Zheng; Huanying Gu; Yehoshua Perl; James Geller; Joan Kapusnik-Uner; Aleksandr Zakharchenko (AMIA, 2015)

Algorithmic detection of inconsistent modeling among SNOMED CT concepts by combining lexical and structural indicators. - Ankur Agrawal; Yehoshua Perl; Christopher Ochs; Gai Elhanan (BIBM, 2015)

Using aggregate taxonomies to summarize SNOMED CT evolution. - Christopher Ochs; Yehoshua Perl; James Geller; Mark A. Musen (BIBM, 2015)

Abstraction networks for terminologies: Supporting management of "big knowledge". - Michael Halper; Huanying Gu; Yehoshua Perl; Christopher Ochs (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)

Summarizing and visualizing structural changes during the evolution of biomedical ontologies using a Diff Abstraction Network. - Christopher Ochs; Yehoshua Perl; James Geller; Melissa A. Haendel; Matthew H. Brush; Sivaram Arabandi; Samson W. Tu (J. Biomed. Informatics, 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)

Tracking the Remodeling of SNOMED CT's Bacterial Infectious Diseases. - Christopher Ochs; James T. Case; Yehoshua Perl (AMIA, 2016)

A Descriptive Delta for Identifying Changes in SNOMED CT. - Christopher Ochs; Yehoshua Perl; Gai Elhanan; James T. Case (ICBO/BioCreative, 2016)

Visualizing the "Big Picture" of Change in NCIt's Biological Processes. - Yehoshua Perl; Christopher Ochs; Sherri de Coronado; Nicole Thomas (ICBO/BioCreative, 2016)

A Quality-Assurance Study of ChEBI. - Hasan Yumak; Ling Chen 007; Michael Halper; Ling Zheng; Yehoshua Perl; Gai Elhanan (ICBO/BioCreative, 2016)

How to Summarize Big Knowledge Subjects. - Ling Zheng; Yehoshua Perl; James Geller; Gai Elhanan (ICBO/BioCreative, 2016)

A contextual auditing method for SNOMED CT concepts. - Ankur Agrawal; Yehoshua Perl; Christopher Ochs; Gai Elhanan (Int. J. Data Min. Bioinform., 2016)

Quality assurance of the gene ontology using abstraction networks. - Christopher Ochs; Yehoshua Perl; Michael Halper; James Geller; Jane Lomax (J. Bioinform. Comput. Biol., 2016)

A unified software framework for deriving, visualizing, and exploring abstraction networks for ontologies. - Christopher Ochs; James Geller; Yehoshua Perl; Mark A. Musen (J. Biomed. Informatics, 2016)

Utilizing a structural meta-ontology for family-based quality assurance of the BioPortal ontologies. - Christopher Ochs; Zhe He 001; Ling Zheng; James Geller; Yehoshua Perl; George Hripcsak; Mark A. Musen (J. Biomed. Informatics, 2016)

Applications of the Ontology Abstraction Framework. - Christopher Ochs; James Geller; Yehoshua Perl (AMIA, 2017)

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)

Discovering additional complex NCIt gene concepts with high error rate. - Ling Zheng; Hua Min; Yehoshua Perl; James Geller (BIBM, 2017)

Multi-layer Big Knowledge Visualization Scheme for Comprehending Neoplasm Ontology Content. - Ling Zheng; Christopher Ochs; James Geller; Hao Liu 025; Yehoshua Perl; Sherri de Coronado (ICBK, 2017)

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

Summarizing an Ontology: A "Big Knowledge" Coverage Approach. - Ling Zheng; Yehoshua Perl; Gai Elhanan; Christopher Ochs; James Geller; Michael Halper (MedInfo, 2017)

Real Time Summarization and Visualization of Ontology Change in Protégé. - Christopher Ochs; James Geller; Mark A. Musen; Yehoshua Perl (VOILA@ISWC, 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)

From SNOMED CT to Uberon: Transferability of evaluation methodology between similarly structured ontologies. - Gai Elhanan; Christopher Ochs; José L. V. Mejino Jr.; Hao Liu 025; Christopher J. Mungall; Yehoshua Perl (Artif. Intell. Medicine, 2017)

Analyzing structural changes in SNOMED CT's Bacterial infectious diseases using a visual semantic delta. - Christopher Ochs; James T. Case; Yehoshua Perl (J. Biomed. Informatics, 2017)

An empirical analysis of ontology reuse in BioPortal. - Christopher Ochs; Yehoshua Perl; James Geller; Sivaram Arabandi; Tania Tudorache; Mark A. Musen (J. Biomed. Informatics, 2017)

Quality assurance of chemical ingredient classification for the National Drug File - Reference Terminology. - Ling Zheng; Hasan Yumak; Ling Chen 007; Christopher Ochs; James Geller; Joan Kapusnik-Uner; Yehoshua Perl (J. Biomed. Informatics, 2017)

Using Convolutional Neural Networks to Support Insertion of New Concepts into SNOMED CT. - Hao Liu 025; James Geller; Michael Halper; Yehoshua Perl (AMIA, 2018)

Overlapping Complex Concepts Have More Commission Errors, Especially in Intensive Terminology Auditing. - Ling Zheng; Hao Liu 025; Yehoshua Perl; James Geller; Christopher Ochs; James T. Case (AMIA, 2018)

Enrichment of SNOMED CT Ophthalmology Component to Support EHR Coding. - Hao Liu 025; P. Lloyd Hildebrand; Yehoshua Perl; 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)

Can a Convolutional Neural Network Support Auditing of NCI Thesaurus Neoplasm Concepts? - Hao Liu 025; Ling Zheng; Yehoshua Perl; James Geller; Gai Elhanan (ICBO, 2018)

Quality Assurance of Ontology Content Reuse. - Michael Halper; Christopher Ochs; Yehoshua Perl; Sivaram Arabandi; Mark A. Musen (ICBO, 2018)

A Quality Assurance Methodology for ChEBI Ontology Focusing on Uncommonly Modeled Concepts. - Hao Liu 025; Ling Chen 007; Ling Zheng; Yehoshua Perl; James Geller (ICBO, 2018)

Quality assurance of biomedical terminologies and ontologies. - James Geller; Yehoshua Perl; Licong Cui; Guo-Qiang Zhang 001 (J. Biomed. Informatics, 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)

Transfer Learning from BERT to Support Insertion of New Concepts into SNOMED CT. - Hao Liu 025; Yehoshua Perl; James Geller (AMIA, 2019)

Training Convolutional Neural Network with Terminology Summarization Data Improves SNOMED CT Enrichment. - Ling Zheng; Hao Liu 025; Yehoshua Perl; James Geller (AMIA, 2019)

Quality assurance of complex ChEBI concepts based on number of relationship types. - Hasan Yumak; Ling Zheng; Ling Chen 007; Michael Halper; Yehoshua Perl; Gareth Owen (Appl. Ontology, 2019)

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)

Mining Concepts for a COVID Interface Terminology for Annotation of EHRs. - Vipina Kuttichi Keloth; Shuxin Zhou; Luke Lindemann; Gai Elhanan; Andrew J. Einstein; James Geller; Yehoshua Perl (IEEE BigData, 2020)

A review of auditing techniques for the Unified Medical Language System. - Ling Zheng; Zhe He 001; Duo Helen Wei; Vipina Kuttichi Keloth; Jungwei Fan 001; Luke Lindemann; Xinxin Zhu; James J. Cimino; Yehoshua Perl (J. Am. Medical Informatics Assoc., 2020)

Concept placement using BERT trained by transforming and summarizing biomedical ontology structure. - Hao Liu 025; Yehoshua Perl; James Geller (J. Biomed. Informatics, 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)

Visual comprehension and orientation into the COVID-19 CIDO ontology. - Ling Zheng; Yehoshua Perl; Yongqun He; Christopher Ochs; James Geller; Hao Liu 025; Vipina Kuttichi Keloth (J. Biomed. Informatics, 2021)

A comprehensive update on CIDO: the community-based coronavirus infectious disease ontology. - Yongqun He; Hong Yu 014; Anthony Huffman; Asiyah Yu Lin; Darren A. Natale; John Beverley; Ling Zheng; Yehoshua Perl; Zhigang Wang; Yingtong Liu; Edison Ong; Yang Wang; et al. (J. Biomed. Semant., 2022)

Using annotation for computerized support for fast skimming of cardiology electronic health record notes. - Mahshad Koohi H. Dehkordi; Andrew J. Einstein; Shuxin Zhou; Gai Elhanan; Yehoshua Perl; Vipina Kuttichi Keloth; James Geller; Hao Liu 025 (BIBM, 2023)

Guidelines for the reuse of ontology content. - Michael Halper; Larisa N. Soldatova; Mathias Brochhausen; Fatima Sabiu Maikore; Christopher Ochs; Yehoshua Perl (Appl. Ontology, 2023)

Mining of EHR for interface terminology concepts for annotating EHRs of COVID patients. - Vipina Kuttichi Keloth; Shuxin Zhou; Luke Lindemann; Ling Zheng; Gai Elhanan; Andrew J. Einstein; James Geller; Yehoshua Perl (BMC Medical Informatics Decis. Mak., 2023)

Big knowledge visualization of the COVID-19 CIDO ontology evolution. - Ling Zheng; Yehoshua Perl; Yongqun He (BMC Medical Informatics Decis. Mak., 2023)

Enhancing patient Comprehension: An effective sequential prompting approach to simplifying EHRs using LLMs. - Mahshad Koohi H. Dehkordi; Shuxin Zhou; Yehoshua Perl; Fadi P. Deek; Andrew J. Einstein; Gai Elhanan; Zhe He 001; Hao Liu 025 (BIBM, 2024)

Using clinical entity recognition for curating an interface terminology to aid fast skimming of EHRs. - Navya Martin Kollapally; Mahshad Koohi H. Dehkordi; Yehoshua Perl; James Geller; Fadi P. Deek; Hao Liu 025; Vipina Kuttichi Keloth; Gai Elhanan; Andrew J. Einstein; Shuxin Zhou (BIBM, 2024)

Skimming of Electronic Health Records Highlighted by an Interface Terminology Curated with Machine Learning Mining. - Mahshad Koohi H. Dehkordi; Navya Martin Kollapally; Yehoshua Perl; James Geller; Fadi P. Deek; Hao Liu 025; Vipina Kuttichi Keloth; Gai Elhanan; Andrew J. Einstein (BIOSTEC (2), 2024)

Using Generative Large Language Models for Hierarchical Relationship Prediction in Medical Ontologies. - Hao Liu 025; Shuxin Zhou; Zhehuan Chen; Yehoshua Perl; Jiayin Wang (ICHI, 2024)

CFC Annotator: A Cluster-Focused Combination Algorithm for Annotating Electronic Health Records by Referencing Interface Terminology. - Shuxin Zhou; Hao Liu 025; Pritam Sen; Yehoshua Perl; Mahshad Koohi H. Dehkordi (BIOSTEC (2): HEALTHINF, 2025)