Minimal examples help

February 24, 2015
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Minimal examples help

The other day I got stuck working with a huge data set using data.table in R. It took me a little while to realise that I had to produce a minimal reproducible example to actually understand why I got stuck in the first place. I know, this is the mantr...

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Journal bans null hypothesis significance tests

February 24, 2015
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Journal bans null hypothesis significance tests

In a recent editorial [here], the journal Basic and Applied Social Psychology has banned the null hypothesis significance testing procedure (NHSTP). "We hope and anticipate that banning the NHSTP will have the effect of increasing the quality of submit...

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Martin Luther King (2) vs. Sigmund Freud

February 23, 2015
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Martin Luther King (2) vs. Sigmund Freud

We didn’t get any great comments yesterday, so I’ll have to go with PKD on the grounds that he was the presumptive favorite, and nobody made any good case otherwise. And today we have the second seed among the Religious Leaders vs. an unseeded entry in the Founders of Religions category. Truly a classic matchup. […] The post Martin Luther King (2) vs. Sigmund Freud appeared first on Statistical Modeling,…

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“Unbiasedness”: You keep using that word. I do not think it means what you think it means. [My talk tomorrow in the Princeton economics department]

February 23, 2015
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“Unbiasedness”:  You keep using that word. I do not think it means what you think it means. [My talk tomorrow in the Princeton economics department]

The talk is tomorrow, Tues 24 Feb, 2:40-4:00pm in 200 Fisher Hall: “Unbiasedness”: You keep using that word. I do not think it means what you think it means. Andrew Gelman, Department of Statistics and Department of Political Science, Columbia University Minimizing bias is the traditional first goal of econometrics. In many cases, though, the […] The post “Unbiasedness”: You keep using that word. I do not think it means…

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Hadoop and Neo4j

February 23, 2015
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Hadoop and Neo4j

Hadoop is being widely used for processing big data and Neo4j is a popular open-source graph database. When doing social network analysis on big data, a “natural” thought is to use them together. Unfortunately, Neo4j cannot work directly on HDFS … Continue reading →

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On deck this week

February 23, 2015
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Mon: “Unbiasedness”: You keep using that word. I do not think it means what you think it means. [My talk tomorrow in the Princeton economics department] Martin Luther King (2) vs. Sigmund Freud Tues: “A small but growing collection of studies suggest X” . . . huh? Aristotle (3) vs. Stewart Lee Wed: The axes […] The post On deck this week appeared first on Statistical Modeling, Causal Inference, and…

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Tennis Graphic Version 2

February 23, 2015
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Tennis Graphic Version 2

The tennis graphic is coming along; here's version 2 static. Thanks for the earlier comments on version 1 (more emailed than posted, you technophobes). Same Federer-Monfils example below. We now simply show points-from-set, set-by-set. (Sorry...

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Complete cases: How to perform listwise deletion in SAS

February 23, 2015
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Complete cases: How to perform listwise deletion in SAS

SAS procedures usually handle missing values automatically. Univariate procedures such as PROC MEANS automatically delete missing values when computing basic descriptive statistics. Many multivariate procedures such as PROC REG delete an entire observation if any variable in the analysis has a missing value. This is called listwise deletion or using […]

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Statistical modelling and analysis of big data

February 22, 2015
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Statistical modelling and analysis of big data

I’m currently attending the one day workshop on this topic at QUT in Brisbane. This morning I spoke on “Visualizing and forecasting big time series data”. My slides are here. The talks are being streamed. OVERVIEW Big data is now endemic in business, industry, government, environmental management, medical science, social research and so on. One […]

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Philip K. Dick (2) vs. Jean Baudrillard

February 22, 2015
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Philip K. Dick (2) vs. Jean Baudrillard

For yesterday, I was gonna go with Vincent, based on X’s comment: In addition to his unique painting style and very special life, van Gogh was highly literate, as shown through the 844 letters from him that are available today. X also made a missing-body-part joke, which I generally don’t think is so cool but, […] The post Philip K. Dick (2) vs. Jean Baudrillard appeared first on Statistical Modeling,…

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“Academics should be made accountable for exaggerations in press releases about their own work”

February 22, 2015
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Fernando Martel Garcia points me to this news article by Ben Goldacre: For anyone with medical training, mainstream media coverage of science can be an uncomfortable read. It is common to find correlational findings misrepresented as denoting causation, for example, or findings in animal studies confidently exaggerated to make claims about treatment for humans. But […] The post “Academics should be made accountable for exaggerations in press releases about their…

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Priors on odds and probability of success

February 22, 2015
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Priors on odds and probability of success

In Bayesian Approaches to Clinical Trials and Health-Care Evaluation (David J. Spiegelhalter, Keith R. Abrams, Jonathan P. Myles) they mention that an non informative prior should be uniform over the range of interest. They combine this with the d...

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Sir Harold Jeffreys’ (tail area) one-liner: Saturday night comedy (b)

February 22, 2015
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Sir Harold Jeffreys’ (tail area) one-liner: Saturday night comedy (b)

This headliner appeared before, but to a sparse audience, so Management’s giving him another chance… His joke relates to both Senn’s post (about alternatives), and to my recent post about using (1 – β)/α as a likelihood ratio--but for very different reasons. (I’ve explained at the bottom of this “(b) draft”.)  ….If you look closely, you’ll see that it’s […]

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Vincent van Gogh (3) vs. Grandma Moses

February 21, 2015
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Vincent van Gogh (3) vs. Grandma Moses

In yesterday‘s battle of the religions, the strongest argument against Mother Teresa was given by Paul, who related that she was friends with all sorts of nasty politicians and that she’s been accused of spending money that came from questionable sources. But if that’s all you can say about her, it won’t cut much ice […] The post Vincent van Gogh (3) vs. Grandma Moses appeared first on Statistical Modeling,…

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Bayes and doomsday

February 21, 2015
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Ben O’Neill writes: I am a fellow Bayesian statistician at the University of New South Wales (Australia).  I have enjoyed reading your various books and articles, and enjoyed reading your recent article on The Perceived Absurdity of Bayesian Inference.  However, I disagree with your assertion that the “doomsday argument” is non-Bayesian; I think if you read […] The post Bayes and doomsday appeared first on Statistical Modeling, Causal Inference, and Social…

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Useful for referring—02-20-2015

February 20, 2015
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Useful for referring—02-20-2015

  Deep Learning Master Class Advances in Variational Inference Numerical Optimization: Understanding L-BFGS An exact mapping between the Variational Renormalization Group and Deep Learning New ASA Guidelines for Undergraduate Statistics Programs 奇异值分解(We Recommend a Singular Value Decomposition) 如何简单形象又有趣地讲解神经网络是什么? Academic vs. Industry Careers Hadley Wickham: Impact the world by being useful Statisticians in World War II: […]

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Useful for referring—02-20-2015

February 20, 2015
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Useful for referring—02-20-2015

  Deep Learning Master Class Advances in Variational Inference Numerical Optimization: Understanding L-BFGS An exact mapping between the Variational Renormalization Group and Deep Learning New ASA Guidelines for Undergraduate Statistics Programs 奇异值分解(We Recommend a Singular Value Decomposition) 如何简单形象又有趣地讲解神经网络是什么? Academic vs. Industry Careers Hadley Wickham: Impact the world by being useful Statisticians in World War II: […]

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The bracket so far

February 20, 2015
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The bracket so far

Thanks to the Excel stylings of Paul Davidson: Our competition is (approximately) 1/4 done! And I’ve been thinking about possible categories for next year’s tourney: New Jersey politicians Articulate athletes Plagiarists People named Greg or Gregg Vladimir Nabokov and people connected to him . . . Ummm, we need 3 more categories. Any suggestions? Real […] The post The bracket so far appeared first on Statistical Modeling, Causal Inference, and…

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Mother Teresa (4) vs. Sun Myung Moon

February 20, 2015
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Mother Teresa (4) vs. Sun Myung Moon

For yesterday, I’ll have to go with Gandhi, the original badass of nonviolence. Zbicyclist found this quote, “He propagated that . . . we should take only that which is required, in minimum quantity. We should not eat to appease our taste buds,” which implies that Gandhi shouldn’t pick the caterer—but that’s not an issue, […] The post Mother Teresa (4) vs. Sun Myung Moon appeared first on Statistical Modeling,…

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Statistical Significance – Significant Problem?

February 20, 2015
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John Carlin, who’s collaborated on some of my recent work on Type S and Type M errors, prepared this presentation for a clinical audience. It might be of interest to some of you. The ideas and some of the examples should be familiar to regular readers of this blog, but it could be useful to […] The post Statistical Significance – Significant Problem? appeared first on Statistical Modeling, Causal Inference,…

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Applied Nonparametric Econometrics

February 19, 2015
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Applied Nonparametric Econometrics

Recently, I received a copy of a new econometrics book, Applied Nonparametric Econometrics, by Daniel Henderson and Christopher Parmeter.The title is pretty self-explanatory and, as you'd expect with any book published by CUP, this is a high-quali...

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Stephen Senn: Fisher’s Alternative to the Alternative

February 19, 2015
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Stephen Senn: Fisher’s Alternative to the Alternative

As part of the week of recognizing R.A.Fisher (February 17, 1890 – July 29, 1962), I reblog Senn from 3 years ago.   ‘Fisher’s alternative to the alternative’ By: Stephen Senn [2012 marked] the 50th anniversary of RA Fisher’s death. It is a good excuse, I think, to draw attention to an aspect of his philosophy of […]

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Mohandas Gandhi (1) vs. Stanley Kubrick

February 19, 2015
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Mohandas Gandhi (1) vs. Stanley Kubrick

Yesterday‘s competition is a toughie. If it were up to me, I think I’d have to go with Jesus. Here’s why: I’d come into the seminar with lots of resistance, like, c’mon, Jesus, I totally don’t believe the hype. As Hernan put it in comments: Jesus spoke in parables to avoid committing to a specific […] The post Mohandas Gandhi (1) vs. Stanley Kubrick appeared first on Statistical Modeling, Causal…

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