Monthly Archives: April 2010

Zelig and Matching in R with an Application to Conflict and Leader Tenure

April 14, 2010
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Andrew Little discusses two econometric packages developed by Gary King of Harvard, and how he has used them in his research at the August, 2009 NYC R Statistical Programming Meetup. Zelig - a single, easy-to-use package that can estimate, help inter...

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Lots of new Videos in Rchive

April 14, 2010
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I have just uploaded a bunch of new videos the Rchive (yea, that’s what I am calling it now). Most of the videos are from the April NYC meetup, which include the following talks: Pankaj Chopra—using R and Bioconductor (http://www.bioconductor.org/) for biomarker detection in cancer Andrew Ilardi—an R project that analyzes a list of stocks while reaching out

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Portfolio Correlation Analysis Tool

April 14, 2010
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Andrew Ilardi presents R project that analyzes a list of stocks to the NYC R Statistical Programming Meetup on April 8, 2010. Andrew's tool reaches out to the web to pull historical stock prices, then plots Quarter over Quarter correlations and a yea...

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Biomarker detection in cancer (gene expression analysis)

April 14, 2010
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Pankaj Chopra discusses using R and Bioconductor (http://www.bioconductor.org/) for biomarker detection in cancer to the NYC R Statistical Programming Meetup on April 8, 2010.

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New York Pizza – How to Find the Best

April 14, 2010
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Jared Lander discusses the science---and statistics---of finding the best pizza in NYC to the NYC R Statistical Programming Meetup on April 8, 2010.

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Object Oriented Programming with R: My notebook

April 14, 2010
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In the following post, I describe how I've used the OOP features of R to create and use the following class hierarchy:Your browser does not support the <CANVAS> element !/* generated with svg2canvas by Pierre Lindenbaum http://plindenbaum.blogspot.com [email protected] */function paint1271278100588(){var canvas=document.getElementById('ctx1271278100588');if (!canvas.getContext) return;var c=

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Slides from High-Performance Analytics webinar now available

April 14, 2010
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Thanks to everyone who attended the webinar I presented this morning, High-Performance Analytics with REvolution R and Windows HPC Server. My slides are now available for download at the link below; even if you're not using Windows, I hope the slides are a useful introduction to the foreach parallel programming construct in general. If you do use R on...

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Get at least 12 observations before making a confidence interval?

April 14, 2010
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Get at least 12 observations before making a confidence interval?

How many observations should you have before constructing a confidence interval?

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“The next big thing”, R, and Statistics in the cloud

April 14, 2010
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A friend just e-mailed me about a blog post by Dr. AnnMaria De Mars titled “The Next Big Thing”. In it Dr. De Mars wrote (I allowed myself to emphasize some parts of the text): Contrary to what some people seem to think, R is definitely not the next big thing, either. I am always surprised when people ask me why I think...

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R: parallel processing using multicore package

April 14, 2010
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I have been meaning to look at adding some parallel processing to R as I have some scripts that are painfully slow and embarrassingly parallel. There seem to be a lot of packages around for doing parallel computing, listed here.I decided to look at mul...

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