Monthly Archives: December 2013

An Animation of the Construction of a Confidence Interval

December 30, 2013
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An Animation of the Construction of a Confidence Interval

I’m playing blog ping-pong with John Kruschke’s Doing Bayesian Data Analysis blog as he was partly inspired by my silly post on Bayesian mascots when writing a nice piece on Icons for the essence of Bayesian and frequentist data analysis. That piece, in turn, inspired me resulting in the following wobbly backhand. The confidence interval...

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MCMSki IV, Jan. 6-8, 2014, Chamonix (news #16)

December 30, 2013
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MCMSki IV, Jan. 6-8, 2014, Chamonix (news #16)

I am now in Chamonix, a week before MCMSki IV. The town is packed with tourists from all over Europe, English being the dominant language. There is not much snow so far, even though some runs reach town. (I did ski in the nearby Les Houches today and the red runs were either icy or

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Fast-track publishing using knitr: intro (part I)

December 30, 2013
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Fast-track publishing using knitr: intro (part I)

Fast-track publishing using knitr is a short series on how I use knitr to get my articles faster published. By fast-track publishing I mean eliminating as many of the obstacles as possible during the manuscript phase, and not the fast-track some journals offer. In this first introductory article I will try to (1) define the main groups of...

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King Kallis – the greatest all rounder in world cricket

December 30, 2013
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King Kallis – the greatest all rounder in world cricket

A hero's farewellJacques Kallis is retiring today (Dec 30, 2013) from Test cricket at the age of 38. He will continue to play One Day International and T20 cricket.Hats off to a magnificent all rounder and a wonderful athlete. The way he carried h...

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dcemriS4 0.51

December 30, 2013
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dcemriS4 0.51

The R package dcemriS4 provides routines for the quantitative analysis of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI), along with quantification of diffusion-weighted MRI (DWI) and quantitative T2 maps from CPMG sequences.  The ...

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K-means Clustering 86 Single Malt Scotch Whiskies

December 30, 2013
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K-means Clustering 86 Single Malt Scotch Whiskies

by Luba Gloukhov The first time I had an Islay single malt, my mind was blown. In my first foray into the world of whiskies, I took the plunge into the smokiest, peatiest beast of them all — Laphroig. That same night, dreams of owning a smoker were replaced by the desire to roam the landscape of smoky single...

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Blog year 2013 in review

December 30, 2013
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Blog year 2013 in review

Highlights of the blog over the past year. Most popular posts The posts with the most hits during the year. A practical introduction to garch modeling (posted in 2012) A tale of two returns (posted in 2010) The top 7 portfolio optimization problems (posted in 2012) The number 1 novice quant mistake (posted in 2011) On smart beta … Continue reading...

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Installing oce in R

December 30, 2013
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Several of the blog items have used the oce package. The official version of this can be installed from within R by 1 install.packages("oce") and more up-to-date versions can be installed using the devtools package written by Hadley Wickham, which is itself installed with 1 install.packages("devtools") after which installing the latest development version of oce is accomplished with 1 2 3 library(devtools) install_github('ocedata', 'dankelley', 'master') install_github('oce', 'dankelley', 'develop') Note that the...

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Guessing Correlations: A shiny app

December 30, 2013
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Guessing Correlations: A shiny app

A recent hobby of mine (as with many other R users) is to play around with the relatively new R package: shiny. I started creating demo applications about a year ago just to figure out how powerful the platform could be, but it was not until this fall that I started creating some applications for others to use. I...

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Happy new year

December 29, 2013
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Although 2013 was not perfect for me, it still gave me a lot of happiness and beneficial experiences which were worthy to recall.  It is in 2014 that numerous difficult problems need to be solved. Application is still a headache and the final tests are also troublesome. Whereas,  2014 is full of hope. I have … Continue reading...

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