Blog Archives

Propagation of the news of OBL’s death via Twitter

May 6, 2011
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Propagation of the news of OBL’s death via Twitter

SocialFlow's blog has a great case study today on how news from a single tweet -- in this case, speculation made an hour before the President's announcement that Osama bin Laden had been killed -- can propagate through social networks. At 10:24 p.m. EST on Sunday May 1, Keith Urbahn tweeted: "So I'm told by a reputable person they...

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How to access databases from R

May 5, 2011
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From his presentation at the Greater Boston useR Group, R user Jeffrey Breen has shared some useful slides detailing how to bring data from relational databases like MySQL and Oracle. In fact, data from just about any relational database is accessible from R by sending an SQL query to the standard ODBC or JDBC interfaces. R packages also offer...

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Mapping airline flight networks with R

May 5, 2011
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Mapping airline flight networks with R

Inspired by the Facebook Social Network chart, FlowingData's Nathan Yau also turns to R to create a beautiful chart of the network of all flight connections between major airlines in the US: Like the Facebook chart, the chart reflects the intensity of the connections (here, the number of flights) between pairs of cities. Nathan explains: Brighter lines represent more...

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Using R for Map-Reduce applications in Hadoop

May 4, 2011
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Data Scientist Antonio Piccolboni recently published this comparison of the various language and interfaces available for programming Big Data analysis tasks in the map-reduce framework. The interfaces he reviewed included: Java Hadoop (mature and efficient, but verbose and difficult to program) Cascading (brings an SQL-like flavor to Java programming with Hadoop) Pipes/C++ (a C++ interface to programming on Hadoop)...

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How to learn R

May 3, 2011
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Over at R community site inside-R.org, Revolution's Joseph Rickert has published a How-To guide with tips for new users on How to Learn R, with links to resources for R books, blogs and courses. Check it out at the link below. Inside-R: How to Learn R

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Review of the R Cookbook

May 2, 2011
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While we were at R/Finance in Chicago over the weekend (more on that later), it was a great pleasure to meet in person Paul Teetor, author of the R Cookbook (published by O'Reilly). If you haven't picked it up yet, I recommend checking it out: if you already have a basic familiarity of the R syntax, but want to...

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Gartner: Revolution Analytics a "Cool Vendor" for BI

April 29, 2011
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Leading analyst firm Gartner has just published its "Cool Vendors in Analytics and Business Intelligence" report for 2011 (download it here if you have a Gartner subscription). In the report, Revolution Analytics is named a Gartner Cool Vendor, and recognizes the company as "innovative, impactful and intriguing": Driven in part by the rise of big data, business intelligence (BI)...

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Can you do better than cap-weighted equity benchmarks?

April 28, 2011
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We're on our way to Chicago for the annual conference for R users in Finance, R/Finance 2011. Revolution Analytics is proud to once again sponsor this conference, and during the sponsor lunch session at noon on Saturday, we're honoured to have Guy Yollin show how the big-data capabilities of Revolution R Enterprise can be used for quantitative finance. Here...

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How to make 3-D graphics from SAS data

April 27, 2011
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How to make 3-D graphics from SAS data

The blog SAS Analysis shows how to create 3-D images from SAS data ... using R: Some SAS programmers like to use SAS/IML to call R’s functions . However, it seems that SAS/IML fails to work with the latest versions of R since 2.12 . Others tend to play tricks to call R into SAS’s data step...

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Revolution R Enterprise 4.3 now available

April 26, 2011
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We've just released the latest update to Revolution R Enterprise, version 4.3. This release includes version 2.12.2 of the open-source R engine linked with high-performance libraries, and packages it with additional functionality from Revolution Analytics for big data statistics, web services deployment, a Windows UI for R programming and debugging, and much more. Detailed information about the new release...

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