2900 search results for "TwitteR"

To Sweave, or not to Sweave, that is the question

December 16, 2011
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To Sweave, or not to Sweave, that is the question

I am about to start writing up the manuscript of my recent biomath seminar (Act 3: Pineda-Krch. 2011. Cycles at the edge of existence: Emergence of quasi-cycles in strongly destabilizedecosystems.). While the slides for the talk were put together using Sweave … Continue reading →

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The Bay Area R User Group Meeting on Data Mining with R

December 16, 2011
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By Joseph Rickert Put up a poster that says something like “Data Mining with R” anywhere in the Bay Area and you will surely draw a crowd. But it was still a bit of a surprise that the monthly meeting of the Bay Area R User’s group was so well attended. At one point there were 160 people on...

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Backtesting Rebalancing methods

December 15, 2011
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Backtesting Rebalancing methods

I wrote about Rebalancing in the Asset Allocation Process Summary post. Deciding how and when to rebalance (update the portfolio to the target mix) is one of the critical steps in the Asset Allocation Process. I want to study the portfolio performance and turnover for the following Rebalancing methods: Periodic Rebalancing: rebalance to the target

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Bayesian inference and the parametric bootstrap

December 15, 2011
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Bayesian inference and the parametric bootstrap

This paper by Brad Efron came to my knowledge when I was looking for references on Bayesian bootstrap to answer a Cross Validated question. After reading it more thoroughly, “Bayesian inference and the parametric bootstrap” puzzles me, which most certainly means I have missed the main point. Indeed, the paper relies on parametric bootstrap—a frequentist

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RMySQL: using the latest MySQL version

December 15, 2011
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RMySQL: using the latest MySQL version

In order to connect my R related stuff to a webserver and MySQL I went all the way from using xampp to setting up my own (W)AMPP  (Apache MySQL PHP Perl) to finally back to xampp. And I’m quite happy about this very last switch to xampp! Why I like xampp it can be run … Continue reading...

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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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