2695 search results for "twitteR"

R / Finance 2012 Call for Papers

December 15, 2011
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Last night, the text below went out to r-sig-finance along with updates to the R/Finance website and its Call for Papers page; followed by some tweeting and Goggle+'ing (and please do feel free to retweet and share at will...) Call for Papers: ...

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R / Finance 2012 Call for Papers

December 13, 2011
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Last night, the text below went out to r-sig-finance along with updates to the R/Finance website and its Call for Papers page; followed by some tweeting and Goggle+'ing (and please do feel free to retweet and share at will...) Call for Papers: ...

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Unshorten (almost) any URL with R

December 13, 2011
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Unshorten (almost) any URL with R

Introduction I was asked by a friend how to find the full final address of an URL which had been shortened via a shortening service (e.g., Twitter’s t.co, Google’s goo.gl, Facebook’s fb.me, dft.ba, bit.ly, TinyURL, tr.im, Ow.ly, etc.). I replied I had no idea and maybe he should have a look over on StackOverflow.com or, possibly,

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I Work For The Internet !

December 13, 2011
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I Work For The Internet !

UPDATE: code and figure updated at 1150 am CST.The site I WORK FOR THE INTERNET is collecting pictures and first names (last name initials only) to show collective support against SOPA (the Stop Online Piracy Act).  Please stop by their site and a...

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I Work For The Internet !

December 13, 2011
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I Work For The Internet !

UPDATE: code and figure updated at 647 AM CST on 19 Dec '11.  Also, see Jarrett Byrnes (improved) fork of my gist  here.The site I WORK FOR THE INTERNET is collecting pictures and first names (last name initials only) to show collective suppo...

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I Work For The Internet !

December 13, 2011
By
I Work For The Internet !

UPDATE: code and figure updated at 647 AM CST on 19 Dec '11.  Also, see Jarrett Byrnes (improved) fork of my gist  here.The site I WORK FOR THE INTERNET is collecting pictures and first names (last name initials only) to show collective suppo...

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A prize of US$3,000,000 for a data mining competition to improve healthcare

December 13, 2011
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A prize of US$3,000,000 for a data mining competition to improve healthcare

There is a data mining competition with a prize of $3,000,000. The target is to improve healthcare in US by identifying patients who will be admitted to a hospital within the next year, using historical claims data. The algorithm to … Continue reading →

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Backtesting Minimum Variance portfolios

December 12, 2011
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Backtesting Minimum Variance portfolios

I want to show how to combine various risk measures I discussed while writing the series of posts about Asset Allocation with backtesting library in the Systematic Investor Toolbox. I will use Minimum Variance portfolio as an example for this post. I recommend reading a good discussion about Minimum Variance portfolios at Minimum Variance Sector

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How to Become an Efficient and Collaborative R Programmer

December 12, 2011
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I may want to add a subtitle “Why R-Forge Must Die” (thinking of Barry Rowlingson’s talk earlier this year). I have been a GitHub user for two years, and I was mainly influenced by Hadley. Now I even feel a little bit addicted to GitHub (its slogan is “social coding”), because it is really convenient

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Exploring Your Voter File with R

December 12, 2011
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Exploring Your Voter File with R

We perform a voter file analysis for Wake County, NC using R.

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