Nick has a paper in the American Statistician warning about bias in multiple imputation arising from rounding data imputed under a normal assumption. One example where you might run afoul of this is if the data are truly dichotomous or count variables…
Traffic lighting of numeric variables by SAS or VBA
“Traffic lighting” applies distinctive colors to any numeric variables to indicate the ranges, which is particularly important for Excel reporting. In SAS, it can be easily realized by a user defined format. For example, if I want to add yellow …
Stochastic Gradient Decending Logistic Regression in SAS
Test the Stochastic Gradient Decending Logistic Regression in SAS. The logic and code follows the code piece of Ravi Varadhan, Ph.D from this discussion of R Help. The blog SAS Die Hard also has a post about SGD Logistic Regression in SAS.
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Favourite Papers from SAS Global Forum 2012
These are some of my favourite papers from SAS Global Forum 2012 last month. I didn’t to get to see as many papers in person as I’d originally planned; we were very busy at our Metacoda stand. So it was great that the papers had already bee…
SAS on a video game system? I called it.
Back in 2009, I announced that SAS was developing a version of its business analytics platform for use on the Nintendo Wii. I think I gave our legal department a heart attack with this news, until they realized that I had posted it on April 1. At SAS Global Forum […]
Query the Windows registry within your SAS program
On the SAS-L mailing list, a participant posed this question (paraphrased): How can I tell which date format my Windows session is using: European format (with day first) versus USA format (with month first)? I’m reading in output from a Windows file listing, and need to know how to interpret […]