Hello, and Welcome

May 11, 2010
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The SAS Training Post is born, and introductions are in order. I'm Catherine Truxillo, but everyone except my mom calls me Cat. I have been a statistician in the Education division at SAS since 2000. I've been blogging a little longer than that, a...
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Book review: SAS and R by Ken Kleinman and Nicholas J. Horton

May 10, 2010
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There are many books that teach you to use SAS or that teach you to use R. There is at least one book that teaches R to people who know SAS or SPSS (R for SAS and SPSS users by Robert Muenchen, and it’s very good). Most of those try to teach you ...
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Random Sample Selection

May 9, 2010
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Last week my manager asked me to randomly pick 10%observations from a large data set and then create a listing so that the Data management programmers can QC the data. I want to share some thoughts here … how easy and simple to do random sampling. ...
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It’s the added value that counts

May 7, 2010
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Welcome to SAS Training Post, the official blog of SAS Training & Certification! My name is Michele Reister and I am the social media manager for SAS Education. This blog will be a channel to provide you with value-add educational content t...
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K-Nearest Neighbor in SAS

May 5, 2010
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K-Nearest-Neighbor, aka KNN, is a widely used data mining tool and is often called memory-based/case-based/instance-based method as no model is fit. A good introduction to KNN can be find at , or @ Wiki. Typically, KNN algorithm relies on a soph...
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Next Project: Regularized Logistic Regression

May 5, 2010
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L1 Regularized Logistic Regression effectively handles large number of predictors and serves variable selection simultaneously. indicates that L1 RLR can be implemented via IRLS-LARS algorithm. You can tweak PROC GLMSELECT in v9.2 for this. L2 R...
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Repeating a line of data

May 4, 2010
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Repeating a line of a data set for each line in another Suppose you want to access the same information in every line of a data set, and that this information is data-dependent.  For example, suppose you want to add the 25th, 50th, and 75th per...
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Hey Look: There’s Log In

May 3, 2010
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We are working on some changes to support.sas.com that I'll talk about here over the next few weeks. We tried to squeak a few in before leaving Cary for SAS Global Forum. If you didn't see these on the demo floor, let me point them out now. Thes...
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Conduct R analysis within SAS

April 30, 2010
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%macro RScript(Rscript); data _null_; file "&Rscript"; infile cards; input; put _infile_; %mend; %macro CallR(Rscript, Rlog); systask command "C:\Progra~1\R\R-2.8.0\bin\R.exe CMD BATCH --vanilla --quiet ...
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