A natural language parsing system for encoding admitting diagnoses. - Peter J. Haug; Lee M. Christensen; M. Gundersen; B. Clemons; S. Koehler; K. Bauer (AMIA, 1997)

Model-Based Quality Assurance in Radiology. - Peter J. Haug; Philip R. Frederick; Lee M. Christensen; S. Jan Haug; Martha Farney (AMIA, 1999)

MPLUS: a probabilistic medical language understanding system. - Lee M. Christensen; Peter J. Haug; Marcelo Fiszman (ACL Workshop on Natural Language Processing in the Biomedical Domain, 2002)

Classifying free-text triage chief complaints into syndromic categories with natural language processing. - Wendy Webber Chapman; Lee M. Christensen; Michael M. Wagner 001; Peter J. Haug; Oleg Ivanov; John N. Dowling; Robert T. Olszewski (Artif. Intell. Medicine, 2005)

Methodology to Develop and Evaluate a Semantic Representation for NLP. - Jeannie Yuhaniak Irwin; Henk Harkema; Lee M. Christensen; Titus Schleyer; Peter J. Haug; Wendy Webber Chapman (AMIA, 2009)

ONYX: A System for the Semantic Analysis of Clinical Text. - Lee M. Christensen; Henk Harkema; Peter J. Haug; Jeannie Yuhaniak Irwin; Wendy W. Chapman (BioNLP@HLT-NAACL, 2009)

Task 2: ShARe/CLEF eHealth Evaluation Lab 2013. - Danielle L. Mowery; Brett R. South; Lee M. Christensen; Laura-Maria Murtola; Sanna Salanterä; Hanna Suominen; David Martínez 001; Noémie Elhadad; Sameer Pradhan; Guergana K. Savova; Wendy W. Chapman (CLEF (Working Notes), 2013)

Task 1: ShARe/CLEF eHealth Evaluation Lab 2013. - Sameer Pradhan; Noémie Elhadad; Brett R. South; David Martínez 001; Lee M. Christensen; Amy Vogel; Hanna Suominen; Wendy W. Chapman; Guergana K. Savova (CLEF (Working Notes), 2013)

Disease/Disorder Semantic Template Filling - Information Extraction Challenge in the ShARe/CLEF eHealth Evaluation Lab 2014. - Sumithra Velupillai; Danielle L. Mowery; Lee M. Christensen; Noemie Elhadad; Sameer Pradhan; Guergana K. Savova; Wendy W. Chapman (AMIA, 2014)

Task 2: ShARe/CLEF eHealth Evaluation Lab 2014. - Danielle L. Mowery; Sumithra Velupillai; Brett R. South; Lee M. Christensen; David Martínez 001; Liadh Kelly; Lorraine Goeuriot; Noémie Elhadad; Sameer Pradhan; Guergana K. Savova; Wendy W. Chapman (CLEF (Working Notes), 2014)

Annotating ADLs and IADLs in Veterans Affairs Clinical Documents. - Brett R. South; Danielle L. Mowery; Lee M. Christensen; Adi V. Gundlapalli; Melissa Tharp; Marzieh Vali; Marjorie E. Carter; Mike Conway; Salomeh Keyhani; Wendy W. Chapman (AMIA, 2015)

Towards a Generalizable Time Expression Model for Temporal Reasoning in Clinical Notes. - Sumithra Velupillai; Danielle L. Mowery; Samir E. AbdelRahman; Lee M. Christensen; Wendy W. Chapman (AMIA, 2015)

BluLab: Temporal Information Extraction for the 2015 Clinical TempEval Challenge. - Sumithra Velupillai; Danielle L. Mowery; Samir E. AbdelRahman; Lee M. Christensen; Wendy W. Chapman (SemEval@NAACL-HLT, 2015)

Evaluating the state of the art in disorder recognition and normalization of the clinical narrative. - Sameer Pradhan; Noémie Elhadad; Brett R. South; David Martínez 001; Lee M. Christensen; Amy Vogel; Hanna Suominen; Wendy W. Chapman; Guergana Savova (J. Am. Medical Informatics Assoc., 2015)

Normalizing acronyms and abbreviations to aid patient understanding of clinical texts: ShARe/CLEF eHealth Challenge 2013, Task 2. - Danielle L. Mowery; Brett R. South; Lee M. Christensen; Jianwei Leng; Laura-Maria Peltonen; Sanna Salanterä; Hanna Suominen; David Martínez 001; Sumithra Velupillai; Noémie Elhadad; Guergana Savova; Sameer Pradhan; et al. (J. Biomed. Semant., 2016)

Automatic Extraction of Social Determinants of Health from Veterans Affairs Clinical Documents using Natural Language Processing. - Brett R. South; Lee M. Christensen; Danielle L. Mowery; Melissa Castine; Marzieh Vali; Marjorie Carter; Mike Conway; Adi V. Gundlapalli; Wendy W. Chapman; Salomeh Keyhani (CRI, 2017)

Annotating Social Determinants of Health and Functional Status Information Using Publicly Accessible Corpora. - Ruth M. Reeves; Brett R. South; Glenn T. Gobbel; Lee M. Christensen; Paul Thompson; Wendy W. Chapman; Michael E. Matheny; Jeremiah R. Brown (AMIA, 2018)

Moonstone: a novel natural language processing system for inferring social risk from clinical narratives. - Mike Conway; Salomeh Keyhani; Lee M. Christensen; Brett R. South; Marzieh Vali; Louise C. Walter; Danielle L. Mowery; Samir E. AbdelRahman; Wendy W. Chapman (J. Biomed. Semant., 2019)

Adaptation of an NLP system to a new healthcare environment to identify social determinants of health. - Ruth M. Reeves; Lee M. Christensen; Jeremiah R. Brown; Michael Conway; Maxwell Levis; Glenn T. Gobbel; Rashmee U. Shah; Christine Goodrich; Iben Ricket; Freneka F. Minter; Andrew Bohm; Bruce E. Bray; et al. (J. Biomed. Informatics, 2021)

Automatic Extraction of Skin and Soft Tissue Infection Status from Clinical Notes. - Jamie L. W. Rhoads; Lee M. Christensen; Skylar Westerdahl; Vanessa Stevens; Wendy W. Chapman; Mike Conway (MedInfo, 2023)