Considering using a complex algorithm to extract features from narrative notes? Before you do that, give a try Text Nailing which was inspired by a human-robot collaboration methodology (read more in Communications of the ACM).
I joined IBM Healthcare Research, Cambridge MA, in 2016. Before that I was a research fellow at Harvard Medical School / Massachusetts General Hospital. I obtained my PhD focused on human-robot collaboration from Ben-Gurion University of the Negev, Israel. I hold dual citizenship (American and Israeli).