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sasCommunity Tip of the Day
Friedman proposed Regularized Discriminant Analysis (RDA) to overcome multicollinearity and other causes that make LDA/QDA ill-conditioned. The core idea is to regularize illy-conditioned within class covariance matrix with the pooled covariance matrix for QDA or to regularize illy-conditioned pooled covariance matrix with a diagonal matrix for LDA. For details about this algorithm, check the book: Elements of Statistical Learning, Chapter 4, section 3.1.
To implement RDA, we output sufficient statistics using OUTSTAT= in PROC DISCRIM and make appropriete changes to relavant statistics, then use the scoring functionality fo PROC DISCRIM to re-score the data with regularized covariance matrix. See link below for sample code on Regularized LDA.
Submitted By Liang Xie
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Check out the Tip of the Day page for details about this effort.
SAS Global Forum 2019 Conference Chair Applications Available
Applications for the 2019 SAS Global Forum Conference Chair position are now available. You can learn more about this position, its roles, and its responsibilities by browsing a number of supporting documents on the conference leadership page. Hurry the deadline to apply is February 8th.
SAS Global Forum Content is Now Available
With more than 400 sessions and expert-led courses, check out the expansive list and see what SAS® Global Forum 2016 has to offer.
SAS Global Forum Student Symposium
We’re a little less than three months away from SAS Global Forum 2016. While conference organizers are making final plans and SAS users are busy registering and reviewing the agenda, a group of SAS experts are diligently judging a very special contest for this year’s conference.
Who is Contributing to sasCommunity
Apr 17, 2014
Check out the User Contribution Scores page to see who is contributing content or editing content on sasCommunity.
Presenters: Create Your Papers and Presentations Index Page
Mar 24, 2015 Click Expand to View Full Article
sasCommunity.org is happy to announce a new feature/service for presenters and audience members. You can continue the discussion online after the presentation. By creating articles for your presentations, you can easily:
- upload or create links to your paper
- share your code
- share your sample data
- share your PowerPoint presentation
- provide presentation updates
- create a space to continue the discussion of the topic of your presentation
- stay in contact with colleagues, even if your name or email address change
- get more exposure with category tags
- and more.
These new features make it even easier for you to share your presentation materials. We have added facilities to allow you to create articles about your papers for this and previous conferences. Now there is an easy way for you to have a single Presenters page that serves as an index for all of your presentations at SAS Global Forum, Regionals, Local User Groups, and more.
- Feel free to check out Art Carpenter's Presentation's Index Page for an example of a presenters index page.
- Please check out the list of Presentation Index Pages that have already been created.
- Once you have logged in, the first paragraph of the page tells you whether or not you have created your Papers and Presentation Index Page. And if you haven't there is a link to the step by step instructions to create your own personalized Index Page.
We at sasCommunity.org are here to help you publicize your presenter pages. For SGF 2015 presenters creating a presentation page by Monday, April 20th, we will provide:
- a set of stickers containing your presentation page address and QR code for you to pass out at the conference
- PowerPoint slide template that you can use in your presentation to publicize your presenter page
We look forward to your page creations. Let’s continue the discussion on sasCommunity.org! Please feel free to contact us if there is anything that we can do to help you.
The sasCommunity.org Advisory Board
Browse the history of What's New announcements.
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