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In case you missed it: August Roundup

September 8, 2011
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In case you missed them, here are some articles from August of particular interest to R users. A contest to showcase applications of R for businesses is offering $20,000 in prizes from Revolution Analytics. Three new open-source packages integrating R and Hadoop will be introduced by Revolution Analytics' CTO David Champagne in a webinar on September 21. Dirk Eddelbuettel...

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Interacting with bioinformatics webservers using R

September 8, 2011
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Interacting with bioinformatics webservers using R

In an ideal world, all bioinformatics tools would be made available via the Web as a web service with an API, as well as a standalone package to download for local use. This is rarely the case and sometimes, even where one or the other is available, factors such as cost come into play. So

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Information Transmission in a Social Network: Dissecting the Spread of a Quora Post

September 7, 2011
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Information Transmission in a Social Network: Dissecting the Spread of a Quora Post

tl;dr See this movie visualization for a case study on how a post propagates through Quora. How does information spread through a network? Much of Quora’s appeal, after all, lies in its social graph — and when you’ve got a network of users, all broadcasting their activities to their neighbors, information can cascade in multiple

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Google Spreadsheets API: Listing Individual Spreadsheet Sheets in R

September 7, 2011
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Google Spreadsheets API: Listing Individual Spreadsheet Sheets in R

In Using Google Spreadsheets as a Database Source for R, I described a simple Google function for pulling data into R from a Google Visualization/Chart tools API query language query applied to a Google spreadsheet, given the spreadsheet key and worksheet ID. But how do you get a list of sheets in spreadsheet, without opening

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Bayes-250, Edinburgh [day 2]

September 6, 2011
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Bayes-250, Edinburgh [day 2]

After a terrific run this morning to the top of Arthur’s Seat, and then around (the ribs are feeling fine, now!), the Bayes-250 talks were exhilarating and challenging. Jim Smith gave an introduction to the challenges of getting different experts to collaborate on a complex risk assessment, much in the spirit of his book, that

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Salesforce.com and Analytics

September 5, 2011
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Salesforce.com and Analytics

Salesforce.com has become one of the most successful cloud applications. I am quite astounded by it’s mega hit penetration into myriad of industries.  It is being used by leading organizations not only to implement their customer relationship management system but also to develop their own applications running on cloud. But complete absence of meaningful analytical

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A misleading title…

September 4, 2011
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A misleading title…

When I received this book, Handbook of fitting statistical distributions with R, by Z. Karian and E.J. Dudewicz,  from/for the Short Book Reviews section of the International Statistical Review, I was obviously impressed by its size (around 1700 pages and 3 kilos…). From briefly glancing at the table of contents, and the list of standard

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Using Google Spreadsheets as a Database Source for R

September 2, 2011
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Using Google Spreadsheets as a Database Source for R

I couldn’t contain myself (other more pressing things to do, but…), so I just took a quick time out and a coffee to put together a quick and dirty R function that will let me run queries over Google spreadsheet data sources and essentially treat them as database tables (e.g. Using Google Spreadsheets as a

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Le Monde puzzle [#738]

September 1, 2011
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Le Monde puzzle [#738]

The Friday puzzle in Le Monde this week is about “friendly perfect squares”, namely perfect squares x2>10 and y2>10 with the same number of digits and such that, when drifting all digits of x2 by the same value a (modulo 10), one recovers y2. For instance, 121 is “friend” with 676. Here is my R

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Interactive graphics for data analysis

September 1, 2011
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Interactive graphics for data analysis

I got a copy of Martin Theus and Simon Urbanek’s Interactive Graphics for Data Analysis a couple of years ago, whence it’s been sat on my bookshelf. Since I’ve recently become a self-proclaimed expert on interactive graphics I thought it was about time I read the thing. Which is exactly what I did last weekend

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