My World: The new development agenda

April 26, 2014
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My World: The new development agenda

The new development agenda of UN To know people’s priorities and views for a better life is the aim of the …Continue reading →

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My World: The new development agenda

April 26, 2014
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My World: The new development agenda

The new development agenda of UN To know people’s priorities and views for a better life is the aim of the …Continue reading →

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Great Resource for Teaching Statistics with R

April 26, 2014
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Great Resource for Teaching Statistics with R

If you're having trouble teaching statistics using R, then you'll just love the statsTeachR collaboration.It's being launched officially at the 2014 New England Statistics Symposium today.Here's what it's about:"statsTeachR is an open-access, onli...

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Examen, Copules et Valeurs Extrêmes

April 26, 2014
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Après les exposés des dernières séances, l’examen du cours MAT8595, Copules et Valeurs Extrêmes avait lieu hier matin. L’énoncé est en ligne, et j’ai aussi écrit quelques éléments de correction, là. En cas de désaccord, m...

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Sleazy sock puppet can’t stop spamming our discussion of compressed sensing and promoting the work of Xiteng Liu

April 26, 2014
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Sleazy sock puppet can’t stop spamming our discussion of compressed sensing and promoting the work of Xiteng Liu

Some asshole who has a bug up his ass about compressed sensing is spamming our comments with a bunch of sock puppets. All from the same IP address: “George Stoneriver,” Scott Wolfe,” and just plain “Paul,” all saying pretty much the same thing in the same sort of broken English (except for Paul, whose post […] The post Sleazy sock puppet can’t stop spamming our discussion of compressed sensing and…

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Why are R users so damn Stingy?!

April 26, 2014
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Why are R users so damn Stingy?!

YES R!Looking at rapporter's recent blog post on "R activity Around the World", I am shocked by how few users actually monetarily support the R Foundation.  Looking at the US for instance there are only 27 donars representing a little more than 0....

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AISTATS 2014 / MLSS tutorial

April 25, 2014
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AISTATS 2014 / MLSS tutorial

Here are the slides of the tutorial on ABC methods I gave yesterday at both AISTAST 2014 and MLSS. (I actually gave a tutorial at another MLSS a few years ago, on the pretty island of Berder in Brittany, next to Vannes.) They are definitely similar to previous talks and tutorials I delivered on this […]

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This Year’s Lindau Meeting

April 25, 2014
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This Year’s Lindau Meeting

Last October I had a post about the 5th Lindau Meeting on Economic Sciences. It's to be held in August of this year:"The 5th Lindau Meeting on Economic Sciences will provide an open exchange of economic expertise and inspire cross-cultural and int...

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Statistics Lesson and Warning of the Day – Confusion Between the Median and the Average

Statistics Lesson and Warning of the Day – Confusion Between the Median and the Average

Yesterday, I attended an interesting seminar called “Transforming Healthcare through Big Data” at the Providence Health Care Research Institute‘s 2014 Research Day.  The seminar was delivered by Martin Kohn from Jointly Health, and I enjoyed it overall.  However, I noticed a glaring error about basic statistics that needs correction. Martin wanted to highlight the overconfidence that many doctors have […]

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Example 2014.5: Simple mean imputation

April 25, 2014
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Example 2014.5: Simple mean imputation

We're both users of multiple imputation for missing data. We believe it is the most practical principled method for incorporating the most information into data analysis. In fact, one of our more successful collaborations is a review of software for ...

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End-of-week light entertainment: return of maritime nation

April 25, 2014
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End-of-week light entertainment: return of maritime nation

Reader James F. spotted this chart on Times of London a few weeks ago. A lot of effort went into this display. Maybe the point is to make a bunch of data tables less boring?

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Yield Curve Modeling Update

April 25, 2014
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An earlier post, DNS/AFNS Yield Curve Modeling FAQs, ended with:"What next? Job 1 is flexible incorporation of stochastic volatility, moving from \(A_0(N)\) to \(A_x(N)\) for \(x>0\), as bond yields are most definitely conditionally heteroskedastic....

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Bayes Pharma 2014 – final programme

April 25, 2014
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Here's the finalised programme for Bayes Pharma. (Of course I may be biased), but I think it is quite interesting and we have a wide variety of topics, so there should be plenty to get your teeth into! We still have some places available (and as a...

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Revised statistical standards for evidence (comments to Val Johnson’s comments on our comments on Val’s comments on p-values)

April 25, 2014
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As regular readers of this blog are aware, a few months ago Val Johnson published an article, “Revised standards for statistical evidence,” making a Bayesian argument that researchers and journals should use a p=0.005 publication threshold rather than the usual p=0.05. Christian Robert and I were unconvinced by Val’s reasoning and wrote a response, “Revised […] The post Revised statistical standards for evidence (comments to Val Johnson’s comments on our…

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Books & roses (& chatty taxi-drivers)

April 25, 2014
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Books & roses (& chatty taxi-drivers)

I knew that Wednesday was el dia de San Jordi but I hadn't realised the way in which Catalans celebrate it. My flight from Heathrow was slightly delayed, so by the time I arrived in Barcelona it was past 9pm. Still, on my way from the airport I ha...

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Shout out to "R Handles Big Data"

April 25, 2014
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Shout out to "R Handles Big Data"

Searching for SignificanceI just wanted to give a shout out to check out this post by Bob Muenchen on his excellent blog r4stats.com for his exceptional post a little over a year ago entitle "R Handles Big Data".

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Bandit Formulations for A/B Tests: Some Intuition

April 24, 2014
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Bandit Formulations for A/B Tests: Some Intuition

Controlled experiments embody the best scientific design for establishing a causal relationship between changes and their influence on user-observable behavior. – Kohavi, Henne, Sommerfeld, “Practical Guide to Controlled Experiments on the Web” (2007) A/B tests are one of the simplest ways of running controlled experiments to evaluate the efficacy of a proposed improvement (a new […] Related posts: Unit tests as penance How to test XCOM “dice rolls” for fairness…

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An open site for researchers to post and share papers

April 24, 2014
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Alexander Grossman writes: We have launched a beta version of ScienceOpen in December at the occasion of the MRS Fall meeting in Boston. The participants of that conference, most of them were active researchers in physics, chemistry, and materials science, provided us with a very positive feedback. In particular they emphazised that it appears to […] The post An open site for researchers to post and share papers appeared first…

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When to use the start-at-zero rule

April 24, 2014
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When to use the start-at-zero rule

A response to a tweet forwarded to me. The person tweeting complained that FiveThirtyEight uses charts that don’t start the vertical axis at zero. The example given was this: In this post, I want to clear some confusion around the...

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Publishing an R package in the Journal of Statistical Software

April 24, 2014
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Publishing an R package in the Journal of Statistical Software

I’ve been an editor of JSS for the last few years, and as a result I tend to get email from people asking me about publishing papers describing R packages in JSS. So for all those wondering, here are some general comments. JSS prefers to publish papers about packages where the package is on CRAN and has been there long enough to have matured (i.e., obvious bugs ironed out and…

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Machine Learning Lesson of the Day – Estimating Coefficients in Linear Gaussian Basis Function Models

Machine Learning Lesson of the Day – Estimating Coefficients in Linear Gaussian Basis Function Models

Recently, I introduced linear Gaussian basis function models as a suitable modelling technique for supervised learning problems that involve non-linear relationships between the target and the predictors.  Recall that linear basis function models are generalizations of linear regression that regress the target on functions of the predictors, rather than the predictors themselves.  In linear regression, […]

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Phil 6334 Visitor: S. Stanley Young, “Statistics and Scientific Integrity”

April 23, 2014
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Phil 6334 Visitor: S. Stanley Young, “Statistics and Scientific Integrity”

We are pleased to announce our guest speaker at Thursday’s seminar (April 24, 2014): “Statistics and Scientific Integrity”: S. Stanley Young, PhD  Assistant Director for Bioinformatics National Institute of Statistical Sciences Research Triangle Park, NC Author of Resampling-Based Multiple Testing, Westfall and Young (1993) Wiley.       The main readings for the discussion are:  Young, S. & Karr, […]

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Distribution of a range

April 23, 2014
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-+*Suppose you’re drawing random samples uniformly from some interval. How likely are you to see a new value outside the range of values you’ve already seen? The problem is more interesting when the interval is unknown. You may be trying to estimate the end points of the interval by taking the max and min of […]

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