Jul 24, 2013 — Sparse K-Means Clustering "Sparcl" — Tibshirani and Witten introduced a variation of K-Means clustering called “Sparcl.”  What gives it this name?  It is a method of sparse clustering that clusters with an adaptively chosen set of features, by way of the lasso penalty.  This method... Read more

Jul 21, 2013 — Why have clinical decision support systems (CDSS) not worked? — This is by no means an all encompassing list, but I wanted to have a place to jot down some ideas for why CDSS are largely just mediocre.  The big picture summary is that there are problems with the models... Read more

Jul 21, 2013 — The Arden Syntax — What is the Arden Syntax? “A standard for representing clinical and scientific knowledge in an executable format.”* The goal of the Arden Syntax is to be a standard programming language for the implementation of clinical decision support systems. It gets... Read more

Jul 9, 2013 — Install R Packages (that require compilation) on Linux — When trying to install packages in R that require compiling on one of my servers (that I did not have admin access to) I ran into the following error: ERROR: 'configure' exists but is not executable -- see the 'R... Read more