Differences in Occurrence and Recorded Times of Care Delivery Events as Documented in Electronic Health Records. - Mustafa Ozkaynak; Oliwier Dziadkowiec; Sara J. Deakyne Davies; Tiffany Callahan; Eric Tham (AMIA, 2014)

Improving user engagement and insight through Contextualized Quantified Self. - Tiffany Callahan; Tal Lorberbaum; Alexandre Yahi (AMIA, 2015)

Characterizing workflow for pediatric asthma patients in emergency departments using electronic health records. - Mustafa Ozkaynak; Oliwier Dziadkowiec; Rakesh Mistry; Tiffany Callahan; Ze He; Sara J. Deakyne Davies; Eric Tham (J. Biomed. Informatics, 2015)

Semantic Relations in Compound Nouns: Perspectives from Inter-Annotator Agreement. - Prabha Yadav; Elisabetta Jezek; Pierrette Bouillon; Tiffany J. Callahan; Michael Bada; Lawrence E. Hunter; K. Bretonnel Cohen (MedInfo, 2017)

Three Dimensions of Reproducibility in Natural Language Processing. - K. Bretonnel Cohen; Jingbo Xia; Pierre Zweigenbaum; Tiffany Callahan; Orin Hargraves; Foster R. Goss; Nancy Ide; Aurélie Névéol; Cyril Grouin; Lawrence E. Hunter (LREC, 2018)

OWL-NETS: Transforming OWL representations for improved network inference. - Tiffany J. Callahan; William A. Baumgartner Jr.; Michael Bada; Adrianne L. Stefanski; Ignacio Tripodi; Elizabeth K. White; Lawrence E. Hunter (PSB, 2018)

Open Agile text mining for bioinformatics: the PubAnnotation ecosystem. - Jin-Dong Kim; Yue Wang 040; Toyofumi Fujiwara; Shujiro Okuda; Tiffany J. Callahan; K. Bretonnel Cohen (Bioinform., 2019)

Knowledge-based Biomedical Data Science 2019. - Tiffany J. Callahan; Harrison Pielke-Lombardo; Ignacio J. Tripodi; Lawrence E. Hunter (CoRR, 2019)

Semantic integration of clinical laboratory tests from electronic health records for deep phenotyping and biomarker discovery. - Xingmin Aaron Zhang; Amy Yates; Nicole A. Vasilevsky; Jean-Philippe F. Gourdine; Tiffany J. Callahan; Leigh C. Carmody; Daniel Danis; Marcin P. Joachimiak; Vida Ravanmehr; Emily R. Pfaff; James Champion; Kimberly Robasky; et al. (npj Digit. Medicine, 2019)

Hypernetwork Science: From Multidimensional Networks to Computational Topology. - Cliff A. Joslyn; Sinan Aksoy; Tiffany J. Callahan; Lawrence E. Hunter; Brett A. Jefferson; Brenda Praggastis; Emilie A. H. Purvine; Ignacio J. Tripodi (CoRR, 2020)

OMOP2OBO Drug Exposure Ingredient Mappings. - Tiffany J. Callahan; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Drug Exposure Ingredient Mappings. - Tiffany J. Callahan; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Drug Exposure Ingredient Mappings. - Tiffany J. Callahan; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Drug Exposure Ingredient Mappings. - Tiffany J. Callahan; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Drug Exposure Ingredient Mappings. - Tiffany J. Callahan; William A. Baumgartner Jr.; Jordan M. Wyrwa; Nicole A. Vasilevsky; Tellen D. Bennett; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Measurement Mappings. - Tiffany J. Callahan; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Measurement Mappings. - Tiffany J. Callahan; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Measurement Mappings. - Tiffany J. Callahan; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Measurement Mappings. - Tiffany J. Callahan; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Measurement Mappings. - Tiffany J. Callahan; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Measurement Mappings. - Tiffany J. Callahan; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Measurement Mappings. - Tiffany J. Callahan; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Measurement Mappings - WRONG DATA FILE UPLOADED IGNORE THIS VERSION. - Tiffany J. Callahan; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Measurement Mappings. - Tiffany J. Callahan; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Condition Occurrence Mappings. - Tiffany J. Callahan; Jordan M. Wyrwa; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Condition Occurrence Mappings. - Tiffany J. Callahan; Jordan M. Wyrwa; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Condition Occurrence Mappings. - Tiffany J. Callahan; Jordan M. Wyrwa; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Condition Occurrence Mappings. - Tiffany J. Callahan; Jordan M. Wyrwa; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Condition Occurrence Mappings. - Tiffany J. Callahan; Jordan M. Wyrwa; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Condition Occurrence Mappings. - Tiffany J. Callahan; Jordan M. Wyrwa; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

OMOP2OBO Condition Occurrence Mappings. - Tiffany J. Callahan; Jordan M. Wyrwa; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2020)

A Biomedically oriented automatically annotated Twitter COVID-19 Dataset. - Luis Alberto Robles Hernandez; Tiffany J. Callahan; Juan M. Banda (CoRR, 2021)

GraPE: fast and scalable Graph Processing and Embedding. - Luca Cappelletti; Tommaso Fontana; Elena Casiraghi; Vida Ravanmehr; Tiffany J. Callahan; Marcin P. Joachimiak; Christopher J. Mungall; Peter N. Robinson; Justin T. Reese; Giorgio Valentini (CoRR, 2021)

The Human Phenotype Ontology in 2021. - Sebastian Köhler 001; Michael A. Gargano; Nicolas Matentzoglu; Leigh Carmody; David Lewis-Smith; Nicole A. Vasilevsky; Daniel Danis; Ganna Balagura; Gareth Baynam; Amy M. Brower; Tiffany J. Callahan; Christopher G. Chute; et al. (Nucleic Acids Res., 2021)

KG-COVID-19: A Framework to Produce Customized Knowledge Graphs for COVID-19 Response. - Justin T. Reese; Deepak R. Unni; Tiffany J. Callahan; Luca Cappelletti; Vida Ravanmehr; Seth Carbon; Kent A. Shefchek; Benjamin M. Good; James P. Balhoff; Tommaso Fontana; Hannah Blau; Nicolas Matentzoglu; et al. (Patterns, 2021)

Adapting the Harmonized Data Quality Framework for Ontology Quality Assessment. - Tiffany J. Callahan; William A. Baumgartner Jr.; Nicolas A. Matentzoglu; Nicole A. Vasilevsky; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2021)

Characterizing Patient Representations for Computational Phenotyping. - Tiffany J. Callahan; Adrianne L. Stefanski; Danielle Ostendorf; Jordan M. Wyrwa; Sara J. Deakyne Davies; George Hripcsak; Lawrence Hunter; Michael G. Kahn (AMIA, 2022)

A Simple Standard for Sharing Ontological Mappings (SSSOM). - Nicolas Matentzoglu; James P. Balhoff; Susan M. Bello; Chris Bizon; Matthew H. Brush; Tiffany J. Callahan; Christopher G. Chute; William D. Duncan; Chris T. A. Evelo; Davera Gabriel; John B. Graybeal; Alasdair J. G. Gray; et al. (Database J. Biol. Databases Curation, 2022)

Tell Bennet, Christopher Chute, Peter DeWitt, Kenneth Gersing, Andrew Girvin, Melissa Haendel, Jeremy Harper, Janos Hajagos, Stephanie Hong, Emily Pfaff, Jane Reusch, Corneliu Antoniescu, Kimberly Robaski: A Methodological Framework for the Comparative Evaluation of Multiple Imputation Methods: Multiple Imputation of Race, Ethnicity and Body Mass Index in the U.S. National COVID Cohort Collaborative. - Elena Casiraghi; Rachel Wong; Margaret Hall; Ben D. Coleman; Marco Notaro; Michael D. Evans; Jena S. Tronieri; Hannah Blau; Bryan Laraway; Tiffany J. Callahan; Lauren E. Chan; Carolyn T. Bramante; et al. (CoRR, 2022)

Knowledge-Driven Mechanistic Enrichment of the Preeclampsia Ignorome. - Tiffany J. Callahan; Adrianne L. Stefanski; Jin-Dong Kim; William A. Baumgartner Jr.; Jordan M. Wyrwa; Lawrence E. Hunter (CoRR, 2022)

Ontologizing Health Systems Data at Scale: Making Translational Discovery a Reality. - Tiffany J. Callahan; Adrianne L. Stefanski; Jordan M. Wyrwa; Chenjie Zeng; Anna Ostropolets; Juan M. Banda; William A. Baumgartner Jr.; Richard D. Boyce; Elena Casiraghi; Ben D. Coleman; Janine H. Collins; Sara J. Deakyne Davies; et al. (CoRR, 2022)

Developing a Knowledge Graph Framework for Pharmacokinetic Natural Product-Drug Interactions. - Sanya Bathla Taneja; Tiffany J. Callahan; Mary F. Paine; Sandra L. Kane-Gill; Halil Kilicoglu; Marcin P. Joachimiak; Richard D. Boyce (CoRR, 2022)

Adapting the Harmonized Data Quality Framework for Ontology Quality Assessment. - Tiffany J. Callahan; William A. Baumgartner Jr.; Nicolas A. Matentzoglu; Nicole A. Vasilevsky; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2022)

OMOP2OBO Condition Occurrence Mappings. - Tiffany J. Callahan; Jordan M. Wyrwa; Nicole A. Vasilevsky; Tellen D. Bennett; Blake Martin; James A. Feinstein; William A. Baumgartner Jr.; Lawrence E. Hunter; Michael G. Kahn (Zenodo, 2022)

KG-Hub - Building and Exchanging Biological Knowledge Graphs. - J. Harry Caufield; Tim E. Putman; Kevin Schaper; Deepak R. Unni; Harshad Hegde; Tiffany J. Callahan; Luca Cappelletti; Sierra A. T. Moxon; Vida Ravanmehr; Seth Carbon; Lauren E. Chan; Katherina Cortes; et al. (CoRR, 2023)

An Open-Source Knowledge Graph Ecosystem for the Life Sciences. - Tiffany J. Callahan; Ignacio J. Tripodi; Adrianne L. Stefanski; Luca Cappelletti; Sanya Bathla Taneja; Jordan M. Wyrwa; Elena Casiraghi; Nicolas A. Matentzoglu; Justin T. Reese; Jonathan C. Silverstein; Charles Tapley Hoyt; Richard D. Boyce; et al. (CoRR, 2023)

RNA-KG: An ontology-based knowledge graph for representing interactions involving RNA molecules. - Emanuele Cavalleri; Alberto Cabri; Mauricio Soto Gomez; Sara Bonfitto; Paolo Perlasca; Jessica Gliozzo; Tiffany J. Callahan; Justin T. Reese; Peter N. Robinson; Elena Casiraghi; Giorgio Valentini; Marco Mesiti (CoRR, 2023)

GRAPE for fast and scalable graph processing and random-walk-based embedding. - Luca Cappelletti; Tommaso Fontana; Elena Casiraghi; Vida Ravanmehr; Tiffany J. Callahan; Carlos Cano; Marcin P. Joachimiak; Christopher J. Mungall; Peter N. Robinson; Justin T. Reese; Giorgio Valentini (Nat. Comput. Sci., 2023)

Ontologizing health systems data at scale: making translational discovery a reality. - Tiffany J. Callahan; Adrianne L. Stefanski; Jordan M. Wyrwa; Chenjie Zeng; Anna Ostropolets; Juan M. Banda; William A. Baumgartner Jr.; Richard D. Boyce; Elena Casiraghi; Ben D. Coleman; Janine H. Collins; Sara J. Deakyne Davies; et al. (npj Digit. Medicine, 2023)

A method for comparing multiple imputation techniques: A case study on the U.S. national COVID cohort collaborative. - Elena Casiraghi; Rachel Wong; Margaret Hall; Ben D. Coleman; Marco Notaro; Michael D. Evans; Jena S. Tronieri; Hannah Blau; Bryan Laraway; Tiffany J. Callahan; Lauren E. Chan; Carolyn T. Bramante; et al. (J. Biomed. Informatics, 2023)

Developing a Knowledge Graph for Pharmacokinetic Natural Product-Drug Interactions. - Sanya Bathla Taneja; Tiffany J. Callahan; Mary F. Paine; Sandra L. Kane-Gill; Halil Kilicoglu; Marcin P. Joachimiak; Richard D. Boyce (J. Biomed. Informatics, 2023)

Causal feature selection using a knowledge graph combining structured knowledge from the biomedical literature and ontologies: A use case studying depression as a risk factor for Alzheimer's disease. - Scott A. Malec; Sanya Bathla Taneja; Steven M. Albert; C. Elizabeth Shaaban; Helmet T. Karim; Arthur S. Levine; Paul Munro; Tiffany J. Callahan; Richard D. Boyce (J. Biomed. Informatics, 2023)

Leveraging Chemistry Foundation Models to Facilitate Structure Focused Retrieval Augmented Generation in Multi-Agent Workflows for Catalyst and Materials Design. - Nathaniel H. Park; Tiffany J. Callahan; James L. Hedrick; Tim Erdmann; Sara Capponi (CoRR, 2024)

Converting OMOP CDM to phenopackets: A model alignment and patient data representation evaluation. - Kayla Schiffer-Kane; Cong Liu 020; Tiffany J. Callahan; Casey N. Ta; Jordan G. Nestor; Chunhua Weng (J. Biomed. Informatics, 2024)

National COVID Cohort Collaborative data enhancements: a path for expanding common data models. - Kellie M. Walters; Marshall Clark; Sofia Dard; Stephanie S. Hong; Elizabeth Kelly; Kristin Kostka; Adam M. Lee; Robert T. Miller; Michele Morris; Matvey B. Palchuk; Emily R. Pfaff; Adam B. Wilcox; et al. (J. Am. Medical Informatics Assoc., 2025)

Agentic Mixture-of-Workflows for Multi-Modal Chemical Search. - Tiffany J. Callahan; Nathaniel H. Park; Sara Capponi (CoRR, 2025)