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OHDSI Natural Language Processing Working Group


The primary goal of the NLP working group is to promote the use of textual information from Electronic Health Records (EHRs) for observational studies under the OHDSI umbrella. To facilitate this objective, the group will develop methods and software that can be implemented to utilize clinical text for studies by the OHDSI community.

Project Lead

Project Coordinator

OHDSI NLP WG Monthly Meeting

When: Second Wednesday of every month at 1 PM - 2 PM CT

Where: Click here to join the meeting

Monthly Meeting: Upcoming - April 13, 2022


  1. Presentation on “Cancer-Focused Natural Language Processing for EHR Data” by Dr. Kirk Roberts.
  2. Updates on Note_NLP proposal, NLP paper and PASC study.

Invited talk

Title: Cancer-Focused Natural Language Processing for EHR Data

Presenter: Dr. Kirk Roberts
Kirk Roberts, Ph.D., is an Associate Professor at the UTHealth School of Biomedical Informatics. He has previously conducted research in natural language processing (NLP) in academia, government, and industry. His research work includes using NLP to both extract structured information from unstructured free text and create interactive natural language applications, such as question answering systems and search engines. He actively performs research in clinical information extraction, spatial information extraction, question answering, and information retrieval. His research draws inspiration from fields as diverse as medicine, linguistics, data science, and machine learning. Roberts is also the primary organizer of several TREC biomedical IR tracks and a recipient of numerous federal grants, including an NLM Pathway to Independence Award and an NIBIB Trailblazer Award.

Ongoing Projects

  • Clinical Abbreviations
  • Post-acute sequelae of SARS-CoV-2 infection (PASC) study
  • Extraction, Transformation, and Load Process (ETL)
  • Note type normalization
  • Open source Python NLP package

Past Projects

  • Note_NLP table
  • COVID-19 testing normalization (TestNorm)
  • Note type
  • NLP tools: NLP Wrappers; THEIA; Ananke


A noncomprehensive list of participants: Click here

Upcoming Meeting Dates (2022)

  • April 13
  • May 11
  • June 8
  • July 13
  • August 10
  • September 14
  • October 12
  • November 9
  • December 14


Past WG meetings (Agenda/Minutes/Recordings)

Microsoft Teams meeting

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Learn More

projects/workgroups/nlp-wg.txt · Last modified: 2022/04/08 19:13 by vipina