William Hersh MD

Annual Reflections at the End of 2015

By William Hersh – As regular readers of this blog know, I traditionally end each year with a posting reflecting back on the past year. While this year has been another great success for myself and our informatics program at Oregon Health & Science University (OHSU), it has been somewhat of a transitional year for the informatics field. Many of the new and exciting initiatives in the informatics field from recent years are no longer novel, with some now settling into “midlife” and others being called out for retirement.


Volume is Only One of the Four “V”s of Big Data, Especially for the Right Data

By William Hersh MD – One widely accepted definition of Big Data is that it entails four “V”s: volume, velocity, variety, and veracity. In other words, Big Data is defined by there being a great deal of it (volume), coming at us rapidly and continuously (velocity), taking many different forms and types (variety), and originating from trustworthy sources (veracity).



The Evidence Base for Health Information Exchange

By William Hersh MD – One of my major projects over the last couple years has been a systematic review of the research that has been conducted on health information exchange (HIE). I wrote about this project when it first started and when our protocol for the review was posted for public comment.