The greatest impediment to research progress is not impediments to research progress, it is scientists reading about impediments to research progress

May 31, 2015
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My short answer is that I think twitter is destructive of clear communication. Now I’ll give the question, and I’ll give my long answer. Here’s the question provided by a reader: Just wondering what you thought of Brian Nosek’s recent comment on twitter, “The biggest impediment to research progress is not fraud, it is all […] The post The greatest impediment to research progress is not impediments to research progress,…

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500

May 31, 2015
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500

 Blogstats celebrates a jubilee This blog posts since May 2006. In the nine years, we published 500 posts and got 206 000 views. Every week a blogstats post !   Filed under: 071 Hint, 08 Events

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Paper Helicopter Experiment, part III

May 31, 2015
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Paper Helicopter Experiment, part III

As final part of my paper helicopter experiment analysis (part I, part II) I do a reanalysis for one more data set. In 2002 Erik Erhardt and Hantao Mai did an extensive experiment, see The Search for the Optimal Paper Helicopter. They did a number of s...

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A new R package for detecting unusual time series

May 31, 2015
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A new R package for detecting unusual time series

The anomalous package provides some tools to detect unusual time series in a large collection of time series. This is joint work with Earo Wang (an honours student at Monash) and Nikolay Laptev (from Yahoo Labs). Yahoo is interested in detecting unusual patterns in server metrics. The package is based on this paper with Earo […]

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Lessons learned in high-performance R

Lessons learned in high-performance R

On this blog, I've had a long running investigation/demonstration of how to make a "embarrassingly-parallel" but computationally intractable (on commodity hardware, at least) R problem more performant by using parallel computation and Rcpp. The example problem is to find the… Continue reading →

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Cracking Safe Cracker with R

May 30, 2015
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Cracking Safe Cracker with R

My wife got me a Safe Cracker 40 puzzle a while back. I believe I misplaced the solution some time back. The company, Creative Crafthouse, stands behind their products. They had amazing customer service and promptly supplied me with a … Continue reading →

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Cracking Safe Cracker with R

May 30, 2015
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Cracking Safe Cracker with R

My wife got me a Safe Cracker 40 puzzle a while back. I believe I misplaced the solution some time back. The company, Creative Crafthouse, stands behind their products. They had amazing customer service and promptly supplied me with a … Continue reading →

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Top of the Heap: How Much Can We Learn from Partial Rankings?

May 30, 2015
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Top of the Heap: How Much Can We Learn from Partial Rankings?

The recommendation system gives you a long list of alternatives, but the consumer clicks on only a handful: most appealing first, then the second best, and so on until they stop with all the remaining receiving the same rating as not interesting enough...

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“With that assurance, a scientist can report his or her work to the public, and the public can trust the work.”

May 30, 2015
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Dan Wright writes: Given your healthy skepticism of findings/conclusions from post-peer-reviewed papers, I thought I would forward the following from Institute of Educational Sciences. Here is a sample quote: Simply put, peer review is a method by which scientists who are experts in a particular field examine another scientist’s work to verify that it makes […] The post “With that assurance, a scientist can report his or her work to…

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Three Reasons to Prefer GDPplus to Simple GDP Averages

May 29, 2015
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Let's start with some notation. GDPe is expenditure-side GDP from BEA. GDPi is income-side GDP from BEA. GDPavg is the average of GDPe and GDPi recently introduced by BEA. GDPplus is the Kalman-smoother extraction of GDP from GDPe and GDPi, produced an...

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OK, I’ll Continue With Google Blogger

May 29, 2015
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First, apologies for the posts about my Google Blogger situation. I fear that they border on spam, but at the same time I need to communicate the situation.Anyway, wow, what a flow of communications regarding the last post, from more routes and with mo...

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John Bohannon’s chocolate-and-weight-loss hoax study actually understates the problems with standard p-value scientific practice

May 29, 2015
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John Bohannon’s chocolate-and-weight-loss hoax study actually understates the problems with standard p-value scientific practice

Several people pointed me to this awesome story by John Bohannon: “Slim by Chocolate!” the headlines blared. A team of German researchers had found that people on a low-carb diet lost weight 10 percent faster if they ate a chocolate bar every day. It made the front page of Bild, Europe’s largest daily newspaper, just […] The post John Bohannon’s chocolate-and-weight-loss hoax study actually understates the problems with standard p-value…

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Data Journalism avant la lettre

May 29, 2015
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Data Journalism avant la lettre

From Data to Insight Where there are data, there is insight. However, insight needs know how – know how about …Continue reading →

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Cutting Ties With Google Blogger

May 28, 2015
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The nonsense reported in my May 23 post actually goes well beyond what I reported, to the point where I've lost patience.  (I'm sure I'll eventually blog further on it.)  So henceforth I plan to disintermediate Google, instead hosting the No ...

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The Replication Network

May 28, 2015
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The Replication Network

Some of my previous posts have dealt with the issue of replicability - e.g., here and here.I had an email from Bob Reed today, alerting me to his involvement in the launching of The Replication Network. I knew that this was a b...

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Science is a calling and a career, here is a career planning guide for students and postdocs

May 28, 2015
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Editor’s note: This post was inspired by a really awesome career planning guide that Ben Langmead wrote up for his postdocs which you should go check out right now. You can also find the slightly adapted Leek group career planning guide here. The most common reason that people go into science is altruistic. They loved

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Cracked.com > Huffington Post, Wall Street Journal, New York Times

May 28, 2015
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David Christopher Bell goes to the trouble (link from Palko) to explain why “Every Map of ‘The Most Popular _________ by State’ Is Bullshit.” As long as enterprising P.R. firms are willing to supply unsourced data, lazy journalists (or whatever you call these people) will promote it. We saw this a few years ago in […] The post Cracked.com > Huffington Post, Wall Street Journal, New York Times appeared first…

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Beta unblockers

May 28, 2015
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Beta unblockers

A couple of weeks ago, we've uploaded the new version of BCEA on CRAN, to include the function implementing our method for the computation of the EVPPI based on INLA-SPDE $-$ I've also already mentioned this here.While this is a stable versio...

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Five reasons to use ODS EXCLUDE to suppress SAS output

May 28, 2015
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Five reasons to use ODS EXCLUDE to suppress SAS output

I previously wrote about the best way to suppress output from SAS procedures. Suppressing output is necessary in simulation and bootstrap analyses, and it is useful in other contexts as well. In my previous article, I wrote, "many programmers use ODS _ALL_ CLOSE as a way to suppress output, but […] The post Five reasons to use ODS EXCLUDE to suppress SAS output appeared first on The DO Loop.

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“Intentions” is the new code word for “error probabilities”: Allan Birnbaum’s Birthday

May 27, 2015
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“Intentions” is the new code word for “error probabilities”: Allan Birnbaum’s Birthday

Today is Allan Birnbaum’s Birthday. Birnbaum’s (1962) classic “On the Foundations of Statistical Inference,” in Breakthroughs in Statistics (volume I 1993), concerns a principle that remains at the heart of today’s controversies in statistics–even if it isn’t obvious at first: the Likelihood Principle (LP) (also called the strong likelihood Principle SLP, to distinguish it from the […]

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R #1 by Wide Margin in Latest KDnuggets Poll

May 27, 2015
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R #1 by Wide Margin in Latest KDnuggets Poll

The results of the latest KDnuggets Poll on software for Analytics, Big Data and Data Mining are out, and R has moved into the #1 position by a wide margin. I’ve updated the Surveys of Use section of The Popularity of Data … Continue reading →

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What’s the worst joke you’ve ever heard?

May 27, 2015
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When I say worst, I mean worst. A joke with no redeeming qualities. Here’s my contender, from the book “1000 Knock-Knock Jokes for Kids”: – Knock Knock. – Who’s there? – Ann – Ann who? – An apple fell on my head. There’s something beautiful about this one. It’s the clerihew of jokes. Zero cleverness. […] The post What’s the worst joke you’ve ever heard? appeared first on Statistical Modeling,…

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the Flatland paradox [#2]

May 26, 2015
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the Flatland paradox [#2]

Another trip in the métro today (to work with Pierre Jacob and Lawrence Murray in a Paris Anticafé!, as the University was closed) led me to infer—warning!, this is not the exact distribution!—the distribution of x, namely since a path x of length l(x) will corresponds to N draws if N-l(x) is an even integer […]

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