Estimating Elasticities, All Over Again

August 6, 2015
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Estimating Elasticities, All Over Again

I had some interesting email from Andrew a while back to do with computing elasticities from log-log regression models, and some related issues.In his first email, Andrew commented:"I am interested in the elasticity of H with respect to W, e.g., hours ...

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Compiling RMarkdown from a Helper R Script

August 6, 2015
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Compiling RMarkdown from a Helper R Script

The problemI was looking for a way to compile an RMarkdown document and have the filename of the resulting PDF or HTML document contain the name of the input data that it processed. That is, if I compiled the analysis.Rmd file, where in that file it di...

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When does Bayes do the job?

August 6, 2015
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E. J. writes: I’m writing a paper where I discuss one of the advantages of Bayesian inference, namely that it scales up to complex problems where maximum likelihood would simply be unfeasible or unattractive. I have an example where 2000 parameters are estimated in a nonlinear hierarchical model; MLE would not fare well in this […] The post When does Bayes do the job? appeared first on Statistical Modeling, Causal…

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Moment conditions and Bayesian nonparametrics

August 5, 2015
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Moment conditions and Bayesian nonparametrics

Luke Bornn, Neil Shephard, and Reza Solgi (all from Harvard) have arXived a pretty interesting paper on simulating targets on a zero measure set. Although it is not initially presented this way, but rather in non-parametric terms as moment conditions where θ is the parameter of the sampling distribution, constrained by the value of β. (Which […]

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God-awful conference websites

August 5, 2015
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God-awful conference websites

What do I want in a conference website? Not this. I want to be able to browse sessions to find the ones I’m interested in. That means being able to see the session title and time as well as the speakers and talk titles. A super-long web page is perfectly fine. If you can’t show […]

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God-awful conference websites

August 5, 2015
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God-awful conference websites

What do I want in a conference website? Not this. I want to be able to browse sessions to find the ones I’m interested in. That means being able to see the session title and time as well as the speakers and talk titles. A super-long web page is perfectly fine. If you can’t show […]

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Is something rotten behind there?

August 5, 2015
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Is something rotten behind there?

Via Twitter, Andrew B. (link) asked if I could comment on the following chart, published by PC Magazine as part of their ISP study. (link) This chart is decent, although it can certainly be improved. Here is a better version:...

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How Hamiltonian Monte Carlo works

August 5, 2015
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Marco Inancio posted this one on the Stan users list: ( Statement 1) If the kinetic energy equation comes from a distribution $L$ which is not a symmetric distribution, then thanks to the “Conservation of the Hamiltonian” property we’ll still be able to accept the proposal with probability 1 if we are computing the Hamiltonian’s […] The post How Hamiltonian Monte Carlo works appeared first on Statistical Modeling, Causal Inference,…

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www2.rdatamining.com: a mirror site of RDataMining.com for Chinese users

August 5, 2015
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www2.rdatamining.com: a mirror site of RDataMining.com for Chinese users

RDataMining.com now has a mirror website at http://www2.rdatamining.com. Users in China can download RDataMining documents, code and data at above mirror site, if no access to http://www.rdatamining.com. Note that RDataMining.com will still be the primary site and please visit www2.RDataMining.com … Continue reading →

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Regression coefficient plots in SAS

August 5, 2015
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Regression coefficient plots in SAS

Last week's post about odds ratio plots in SAS made me think about a similar plot that visualizes the parameter estimates for a regression analysis. The so-called regression coefficient plot is a scatter plot of the estimates for each effect in the model, with lines that indicate the width of […] The post Regression coefficient plots in SAS appeared first on The DO Loop.

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"The free development of each is the condition of the war of all against all": Some Paths to the True Knowledge

August 5, 2015
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Attention conservation notice: A 5000+ word attempt to provide real ancestors and support for an imaginary ideology I don't actually accept, drawing on fields in which I am in no way an expert. Contains long quotations from even-longer-dead writers, ...

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In Memoriam Zalmai Shalizi

August 5, 2015
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One summer, when I was a boy, Uncle Zalo tried to teach me to shoot up at his ranch in the New Mexico high country. I was dismal, and I'm pretty sure the phrase "broad side of a barn" crossed his mind. It never crossed his lips, and he was never les...

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Books to Read While the Algae Grow in Your Fur, July 2015

August 5, 2015
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Attention conservation notice: I have no taste. Marc Levinson, The Box: How the Shipping Container Made the World Smaller and the World Economy Bigger This is by now a contemporary classic, which I should have read years ago. To enjoy it, you need t...

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Experimental Considerations Touching on the Art of Winning Lotteries

August 5, 2015
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Attention conservation notice: Facile moral philosophy, loosely tied to experimental sociology. Via I forget who, Darius Kazemi explaining "How I Won the Lottery". The whole thing absolutely must be watched from beginning to end. Kazemi is, of ...

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Neyman: Distinguishing tests of statistical hypotheses and tests of significance might have been a lapse of someone’s pen

August 5, 2015
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Neyman: Distinguishing tests of statistical hypotheses and tests of significance might have been a lapse of someone’s pen

“Tests of Statistical Hypotheses and Their Use in Studies of Natural Phenomena” by Jerzy Neyman ABSTRACT. Contrary to ideas suggested by the title of the conference at which the present paper was presented, the author is not aware of a conceptual difference between a “test of a statistical hypothesis” and a “test of significance” and uses […]

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August reading

August 5, 2015
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August reading

Here's my (slightly delayed) August reading list:Ahelegbey, A. F., 2015. The econometrics of networks: A review. Working Paper  2015/13, Department of Economics, University of Venice.Clemens, M. A., 2015. The meaning of failed replications: A revi...

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Ternary plots in politics

August 5, 2015
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Ternary plots in politics

This week, I read a post by Nicholas Hamilton about ternary plots that made me think, how this geometric diagram has many different application in science fields. Couple weeks ago, I was reading a book by Donald Saari, who uses ternary charts massively to project election outcomes in different electoral settings. Perhaps, most common, ternary … Read More →

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Orange is the new stat

August 4, 2015
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Orange is the new stat

I've been reading Piper Kerman's Orange Is the New Black, a memoir by a woman who served 11 months in a federal prison.  One of the recurring themes is the author's surprise at the length of the sentences her fellow prisoners are serving, esp...

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Pro Publica’s new Surgeon Scorecards

August 4, 2015
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Skyler Johnson writes: You should definitely weigh in on this… Pro Publica created “Surgeon Scorecards” based upon risk adjusted surgery compilation rates. They used hierarchical modeling via the lmer package in R. For detailed methodology, click the methodology “how we calculated complications” link, then atop that next page click on the detailed methodology to download […] The post Pro Publica’s new Surgeon Scorecards appeared first on Statistical Modeling, Causal Inference,…

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Generalised Linear Models in R

August 4, 2015
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Generalised Linear Models in R

Linear models are the bread and butter of statistics, but there is a lot more to it than taking a ruler and drawing a line through a couple of points.Some time ago Rasmus Bååth published an insightful blog article about how such models could be descr...

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Stan Meetup Talk in Ann Arbor this Wednesday (5 Aug 2015)

August 4, 2015
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Stan Meetup Talk in Ann Arbor this Wednesday (5 Aug 2015)

I (Bob) will be presenting an overview of (R)Stan at the Ann Arbor R User Group meetup this Wednesday night (5 August 2015) at 7 PM. To see the abstract and register to attend: RStan: Statistical Modeling Made Easy with Bob Carpenter Wednesday, Aug 5, 2015, 7:00 PM Barracuda Networks317 Maynard St Ann Arbor, MI […] The post Stan Meetup Talk in Ann Arbor this Wednesday (5 Aug 2015) appeared…

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Memories of past JSMs

August 4, 2015
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Memories of past JSMs

The Joint Statistical Meetings (JSM) are the big statistics meetings in North America, “joint” among the American Statistical Association, Institute of Mathematical Statistics, International Biometric Society (ENAR and WNAR), Statistical Society of Canada, and others. JSM 2015 is next week, in Seattle. In anticipation, I thought I’d write down some of my main memories of […]

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Memories of past JSMs

August 4, 2015
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Memories of past JSMs

The Joint Statistical Meetings (JSM) are the big statistics meetings in North America, “joint” among the American Statistical Association, Institute of Mathematical Statistics, International Biometric Society (ENAR and WNAR), Statistical Society of Canada, and others. JSM 2015 is next week, in Seattle. In anticipation, I thought I’d write down some of my main memories of […]

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