I’m currently sitting at about 32K feet above sea level on my way from Tampa International to DIA and my options … Continue reading →
What is the best way to compare the quality of floating-point math libraries (e.g., sin, cos and log)? The traditional approach for evaluating the quality of an algorithm implementing a mathematical function is based on mathematics; methods have been developed to calculate the maximum error between the calculated and the actual value. The answer produced
A recent R-help post asks for examples of Sweave use for web appliations. I think there is very little out there; maybe nothing. Below is a proof of concept for web-based Sweave-ing with rApache. But, it will soon be possible to do this with R's built-in web server. The idea was to treat an Sweave
Probably because I first encountered them somewhat late in my professional life, I am fascinated by categorical data types. Without question, my favorite book on the subject is Alan Agresti’s Categorical Data Analysis (Wiley Series in Probabili...
I received this email last week from Ian Langmore, a postdoc in Columbia: I’m looking for literature on a subject and can’t find it: I have a Metropolis sampler where the acceptance probability is evaluated with some error. This error is not simply error in evaluation of the target density. It occurs due to the