What to graph, not just how to graph it

February 13, 2015
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Robin Gong writes: While we’re on the topic of visualization, I’ve been puzzled by a more general question and I’m unsure where it fits in actually. There seem to be two parts to a good visualization practice, and in our class we’ve been focusing more on one of them, that is “how to get my […] The post What to graph, not just how to graph it appeared first on…

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Introduction to Linear Models and Matrix Algebra MOOC starts this Monday Feb 16

February 13, 2015
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Matrix algebra is the language of modern data analysis. We use it to develop and describe statistical and machine learning methods, and to code efficiently in languages such as R, matlab and python. Concepts such as principal component analysis (PCA) are best described with matrix algebra. It is particularly useful to describe linear models. Linear

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Wrapping up Bayes@Lund 2015

February 12, 2015
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Wrapping up Bayes@Lund 2015

For the second year around I and Ullrika Sahlin arranged the mini-conference Bayes@Lund, with the aim of bringing together researchers in the in the south of Sweden working with Bayesian methods. This year the committee was also beefed up by Paul Cap...

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The advantages of using count() to get N-way frequency tables as data frames in R

The advantages of using count() to get N-way frequency tables as data frames in R

Introduction I recently introduced how to use the count() function in the “plyr” package in R to produce 1-way frequency tables in R.  Several commenters provided alternative ways of doing so, and they are all appreciated.  Today, I want to extend that tutorial by demonstrating how count() can be used to produce N-way frequency tables […]

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The advantages of using count() to get N-way frequency tables as data frames in R

The advantages of using count() to get N-way frequency tables as data frames in R

Introduction I recently introduced how to use the count() function in the “plyr” package in R to produce 1-way frequency tables in R.  Several commenters provided alternative ways of doing so, and they are all appreciated.  Today, I want to extend that tutorial by demonstrating how count() can be used to produce N-way frequency tables […]

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Claude Levi-Strauss (4) vs. Raymond Aron

February 12, 2015
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Claude Levi-Strauss (4) vs. Raymond Aron

Thanks for our bracket-maker Paul Davidson, here’s what we have so far (as of a few days ago): OK, yesterday‘s winner: what can you say? Leonardo da Vinci vs. The guy who did Piss Christ. The funniest argument in all the comments came from Anonymous, who wrote: Serrano. Any schmuck can paint the Mona Lisa, […] The post Claude Levi-Strauss (4) vs. Raymond Aron appeared first on Statistical Modeling, Causal…

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Is Reproducibility as Effective as Disclosure? Let’s Hope Not.

February 12, 2015
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Jeff and I just this week published a commentary in the Proceedings of the National Academy of Sciences on our latest thinking on reproducible research and its ability to solve the reproducibility/replication "crisis" in science (there's a version on arXiv too). In a nutshell, we believe reproducibility (making data and code available so that others can

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Two Unrecognized Hall Of Fame Shortstops

February 12, 2015
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Michael Humphreys writes: Thought you might be interested in or might like to link to the following article. The statistical rigor is obviously not at a professional level, but pitched somewhere around the Bill Jamesian level. Here’s the link. This sort of thing makes me realize how out of it I am, when it comes […] The post Two Unrecognized Hall Of Fame Shortstops appeared first on Statistical Modeling, Causal…

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Minimalism as a form of abuse

February 12, 2015
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Minimalism as a form of abuse

With each succeeding year, I get more and more frustrated with "minimalist" designs that have little respect for users. This Christmas, I received a portable cellphone charger as a gift. A thoughtful gift. I have heard of these devices but...

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Stan 2.6.0 Released

February 12, 2015
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Stan 2.6.0 Released

We’re happy to announce the release of Stan 2.6, including RStan, PyStan, CmdStan; it will also work with the existing Stan.jl and MatlabStan. Although there is some new functionality (hence the minor version bump), this is primarily a maintenance release. It fixes all of the known memory issues with Stan 2.5.0 and improves overall speed […] The post Stan 2.6.0 Released appeared first on Statistical Modeling, Causal Inference, and Social…

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Stan 2.6.0 Released

February 12, 2015
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Stan 2.6.0 Released

We’re happy to announce the release of Stan 2.6, including RStan, PyStan, CmdStan; it will also work with the existing Stan.jl and MatlabStan. Although there is some new functionality (hence the minor version bump), this is primarily a maintenance release. It fixes all of the known memory issues with Stan 2.5.0 and improves overall speed […] The post Stan 2.6.0 Released appeared first on Statistical Modeling, Causal Inference, and Social…

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Leonardo da Vinci (1) vs. The guy who did Piss Christ

February 11, 2015
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Leonardo da Vinci (1) vs. The guy who did Piss Christ

Determining yesterday‘s winner turned out to be complicated. On the face of it, the decision should be easy. Bruno Latour is some postmodernist dude, whereas Albert Camus is one of the coolest men who’s ever lived. But, in comments, Kyle came in with a pretty powerful argument: I’m afraid you couldn’t get Camus to stay […] The post Leonardo da Vinci (1) vs. The guy who did Piss Christ appeared…

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Video: Nigel Holmes on Humor in Visualization and Infographics

February 11, 2015
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In this talk, Nigel Holmes talks about the value of and use of humor in communicating visualization. He also has some interesting criticism of academic visualization research (and also some more artistic pieces). It’s a fun and interesting tal...

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Forecasts From Financial Markets

February 11, 2015
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I'm thinking about broad approaches ("general principles" below) for getting various kinds of forecasts from various kinds of forward-looking financial markets (under assumptions, of course, that typically include risk neutrality).   Did I miss an...

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When the evidence is unclear

February 11, 2015
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A few months ago I posted on a paper by Bernard Tanguy et al. on a field experiment in Ethiopia where I couldn’t figure out, from the article, where was the empirical support for the claims being made. This was not the first time I’d had this feeling about a claim made in social science […] The post When the evidence is unclear appeared first on Statistical Modeling, Causal Inference,…

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Binary heart in SAS

February 11, 2015
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Binary heart in SAS

The xkcd comic often makes me think and laugh. The comic features physics, math, and statistics among its topics. Many years ago, the comic showed a "binary heart": a grid of binary (0/1) numbers with the certain numbers colored red so that they formed a heart. Some years later, I […]

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Scheduling R Tasks via Windows Task Scheduler

February 11, 2015
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Scheduling R Tasks via Windows Task Scheduler

This post will allow you to impress your boss with your strong work ethic by enabling Windows R users to schedule late night tasks.  Picture it, your boss gets an email at 1:30 in the morning with the latest company … Continue reading →

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Scheduling R Tasks via Windows Task Scheduler

February 11, 2015
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Scheduling R Tasks via Windows Task Scheduler

This post will allow you to impress your boss with your strong work ethic by enabling Windows R users to schedule late night tasks.  Picture it, your boss gets an email at 1:30 in the morning with the latest company … Continue reading →

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BayesFactorExtras: a sneak preview

February 10, 2015
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Felix Schönbrodt and I have been working on an R package called BayesFactorExtras. This package is designed to work with the BayesFactor package, providing features beyond the core BayesFactor functionality. Currently in the package are:Sequential Bay...

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“When Do Stories Work? Evidence and Illustration in the Social Sciences”: My talk in the Harvard sociology dept this Thurs noon

February 10, 2015
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Stories are central to social science. It might be pleasant to consider stories as mere adornments and explications of theories that we develop and evaluate via formal data collection, but it seems that all of us—including statisticians!—rely on stories to develop our understanding of the social world. And therein lies a paradox: stories are valued […] The post “When Do Stories Work? Evidence and Illustration in the Social Sciences”: My…

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Albert Camus (1) vs. Bruno Latour

February 10, 2015
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Yesterday‘s winner: Thomas Kinkade. It was a tough call. Duchamp is far more impressive both as an artist and as an intellectual, but, as Jonathan put it in the very first comment in the thread: Duchamp has nothing to teach in an academic seminar: epater les bourgeois, reconceptualize art in a time of technological change, […] The post Albert Camus (1) vs. Bruno Latour appeared first on Statistical Modeling, Causal…

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In search of the elusive loop of plagiarism

February 10, 2015
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In search of the elusive loop of plagiarism

OK, here’s a research project for you. From this recent blog comment, I learned about Mustapha Marrouchi, a professor of literature who has plagiarized from various writers, including the noted academic entertainer Slavoj Zizek. Amusing, given that Zizek himself has been caught plagiarizing. Zizek copied from Stanley Hornbeck. Did Hornbeck plagiarize from anyone else? Probably […] The post In search of the elusive loop of plagiarism appeared first on Statistical…

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Bayesian analysis of match rates on Tinder

February 10, 2015
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Bayesian analysis of match rates on Tinder

Last fall I taught an introduction to Bayesian statistics at Olin College. My students worked on some excellent projects, and I invited them to write up their results as guest articles for this blog. Just in time for Valentine's Day, here's the secon...

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