Cohort Shepherd II: Verifying Cohort Constraints from Hospital Visits
Travis R. Goodwin, Kirk E Roberts, Bryan Rink, Sanda M. Harabagiu · 2012
This paper describes the updated system created by the University of Texas at Dallas for content-based medical record retrieval submitted to the TREC 2012 Medical Records Track. Our system updates our work from the previous year by building a structured query for each cohort that captures the patient’s age, gen-der, hospital status, and medical assertion information. Further, all keywords that encode any medical phe-nomena from the query are recursively decomposed before being expanded using knowledge from UMLS, SNOMED, Wikipedia, and PubMed co-occurrences. An initial ranking of hospital visits is then obtained using BM25 relevance on an interpolation of these