Transforming and Unifying Research with Biomedical Ontologies: The Penn TURBO Project. - Christian J. Stoeckert Jr.; David L. Birtwell; Hayden Freedman; Mark A. Miller; Heather Williams (ICBO, 2018)

Scaling and Querying a Semantically Rich, Electronic Healthcare Graph. - Hayden Freedman; Mark A. Miller; Heather Williams; Christian J. Stoeckert Jr. (ICBO/ODLS, 2020)

A Robust, Self-Training Classifier for Medication Strings, with Quantitative and Semantic Confidence Metrics. - Mark A. Miller; Hayden Freedman; Christian J. Stoeckert Jr. (ICBO/ODLS, 2020)

You've got a Friend in ME (Mobile Edge): Blockchain Processing with Cloud Node Backup. - Zane Karl; Hayden Freedman; Ahmad Showail; Abhishek A. Singh; Samaa Gazzaz; Faisal Nawab (Blockchain, 2022)

Improving Wikidata with Student-Generated Concept Maps. - Hayden Freedman; André van der Hoek; Bill Tomlinson (ICWSM, 2022)

Identifying Surprising Facts in Wikidata. - Nicholas Klein; Filip Ilievski; Hayden Freedman; Pedro A. Szekely (Wikidata@ISWC, 2022)

Ontology Modeling for Probabilistic Knowledge Graphs. - Hayden Freedman; Neda Abolhassani; Jacob Metzger; Sanjoy Paul (ICSC, 2023)

Construction and Analysis of Collaborative Educational Networks based on Student Concept Maps. - Hayden Freedman; Neil Young; David R. Schaefer; Qingyu Song 003; André van der Hoek; Bill Tomlinson (Proc. ACM Hum. Comput. Interact., 2024)

A Bayesian Approach to Constructing Probabilistic Models from Knowledge Graphs. - Hayden Freedman; Jacob Metzger; Neda Abolhassani; Ana Tudor; Bill Tomlinson; Sanjoy Paul (Int. J. Semantic Comput., 2024)

Carnival: JVM Property graph data unification toolkit. - David L. Birtwell; Heather Williams; Tom Hutchinson; Louis Lee; Hayden Freedman; Christian J. Stoeckert Jr. (J. Open Source Softw., 2025)