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Information Discovery On Electronic Health Records Using Authority Flow Techniques, Vagelis Hristidis, Ramakrishna R. Varadarajan, Paul Biondich, Michael Weiner
Information Discovery On Electronic Health Records Using Authority Flow Techniques, Vagelis Hristidis, Ramakrishna R. Varadarajan, Paul Biondich, Michael Weiner
School of Computing and Information Sciences
Background
As the use of electronic health records (EHRs) becomes more widespread, so does the need to search and provide effective information discovery within them. Querying by keyword has emerged as one of the most effective paradigms for searching. Most work in this area is based on traditional Information Retrieval (IR) techniques, where each document is compared individually against the query. We compare the effectiveness of two fundamentally different techniques for keyword search of EHRs.
Methods
We built two ranking systems. The traditional BM25 system exploits the EHRs' content without regard to association among entities within. The Clinical ObjectRank (CO) …