Blog Archives

Slides and replay for PMML webinar

April 15, 2011
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If you missed Wednesday's webinar on Deploying Predictive Analytics with Revolution R, PMML and ADAPA, the presentation slides and the replay (in WMV, reg. req'd) format are now available for download. Here are some additional references, from the closing slide: How Revolution R and ADAPA work together The PMML Package reference White Paper: Deploying Advanced Analytics Using R and...

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Visualizing tax brackets

April 15, 2011
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Visualizing tax brackets

With Tax Day fast approaching here in the US, there's been a lot of discussion about tax policy and in particular the tax rates paid by the highest income earners. Like in many countries, here the income tax system is bracketed: Tax Bracket Single Married Filing Jointly 10% Bracket $0 – $8,375 $0 – $16,750 15% Bracket $8,375 –...

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In case you missed it: March Roundup

April 14, 2011
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In case you missed them, here are some articles from February of particular interest to R users. The doSMP package, which enables parallel processing for R on multiprocessor machines, is now available on CRAN. The Offensive Politics blog provided R code used to make a map of precinct returns in the Chicago mayoral election. A connector to integrate R...

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R 2.13.0 released

April 13, 2011
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The R Core Group has released the latest update to open-source R, R 2.13.0 is now available. You can download the new source distribution from the R Project website, and I see from the Download R tool at inside-R.org that binaries for Windows and Mac are already available at my local CRAN mirror (and, shortly, yours too). The (long)...

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Journal of Statistical Software. Vol. 40

April 12, 2011
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The latest edition of the Journal of Statistical Software is out, with plenty of interesting articles for R users. A must-read is Hadley Wickham's article on "The Split-Apply-Combine Strategy for Data Analysis", which makes a compelling argument for the use of the plyr package to partition datasets and apply sub-group analyses. Also, anyone who hasn't yet purchased a copy...

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Rstudio updates to beta 2

April 11, 2011
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The folks over at Rstudio have released a new update to their open-source R GUI, currently in beta test. This Beta 2 release adds more customizable layouts, editor improvements and new editing themes. Also of interest is a new feature that allows creation of graphics that update under the control of sliders and checkboxes and such. See the full...

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New R User Group in St Louis, MO

April 8, 2011
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The latest local R user group to join the fold is in St Louis, Missouri. Created by Josh Ulrich, their first meeting is on Monday, April 11. Check the link below for full details and to RSVP. Saint Louis R User Group: Inaugural Meeting

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Revolution R, PMML and ADAPA: Webinar April 13

April 7, 2011
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If you'd like to learn more about using the PMML package in R to export statistical models, or if you'd just like to learn more about building predictive models in Revolution R and creating predictions (scores) from them in other applications or in the cloud, I'll be co-presenter on a webinar next week that might be of interest. On...

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How to search the documentation of all CRAN packages

April 5, 2011
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How to search the documentation of all CRAN packages

Ever tried to find a specific function or algorithm in R that you're sure that someone has implemented in a CRAN package, but you don't know which one? Now you can find it, in the R Packages section of R community site inside-R.org. The R Packages section now includes the ability to browse and search help files from R...

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Program announced for R/Finance 2011

April 1, 2011
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R/Finance, the conference devoted to users of R in the financial sector, takes place every year in Chicago. The program has just been announced for R/Finance 2011 (to be held April 29 and 30), and it's jam-packed with talks from on automated trading, financial risk, hedge ratios, stochastic volatility, and much, much, more. Here's the announcement from the organizers:...

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