by Dr. Andrew A. Kramer | Jul 26, 2016 | Blog, Methodology
Gerardus Mercator (1512 – 1594) was a 16th century polymath who created the world’s first atlas, produced a novel way of plotting latitude and longitude that is still being used today (Mercator’s Projection), and wrote the first book on the italics...
by Dr. Andrew A. Kramer | Jul 19, 2016 | Blog, Methodology
First things first. I have never been employed by SAS and have no commercial relationship with the company. The opinions below are purely my own. Take a look at any of the polls querying which tools data scientists report using. Highest on the list would probably be...
by Dr. Andrew A. Kramer | Jul 14, 2016 | Blog
Predicting a true positive event (e.g. morbidity, mortality, adverse event) provides a different epidemiological, financial, and emotional response than predicting a true negative. It follows that having a large number of false negatives might be worse than a model...
by Dr. Andrew A. Kramer | Jul 12, 2016 | Blog
(NB: There are many ways to gauge “performance”. In this article I focus on the mortality rate, although the ideas presented herein could be applied to other outcomes.) Hospital A is a large, academic, urban hospital, whose mortality rate in 2015 was 14%. Hospital B...
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