This is a quick guide on the recommended SAS setup for UT users. This is excerpted from a longer guide on software setup and windows 10.
SAS 9.4 TSIM3
Large (16GB) download from UT Knoxville
This download will take several hours due to its size (zipped file 16GB). You may want to ask the Biostatistics Division (Tristan Hayes) for a local copy of the file. You will still need to download the license file from UT Knoxville (same link as given above, but a small, less than 1MB download). Continue reading…
An entertaining look at floating point computation and absurdities that you might encounter if you are not careful. The video is entertaining; the details are in the article.
Computers were originally conceived as devices for performing mathematics. The earliest computers spent most of their time solving equations. Although the engineering and scientific community now forms only a miniscule part of the computing world, there is a fantastic legacy from those former times: almost all computers now feature superb hardware for performing mathematical calculations accurately and extremely quickly. Sadly, most programming languages make it difficult for programmers to take full advantage of this hardware. An even bigger problem is the lack of documentation; even for many mathematical programmers, aspects of floating-point arithmetic remain shrouded in mystery.
Starting from Julia 0.7, missing values are represented using the new
missing object. Resulting from intense design discussions, experimentations and language improvements developed over several years, it is the heir of the
NA value implemented in the DataArrays package, which used to be the standard way of representing missing data in Julia. Continue reading…
More than half a century of research in theoretical computer science has brought us a great wealth of advanced algorithmic techniques. These techniques can be combined in a variety of ways to provide us with sophisticated, often beautifully elegant algorithms. This diversity of methods is truly stimulating and intellectually satisfying. But is it also necessary? Continue reading…