Trap and cap: Avoid division-by-zero and domain errors when evaluating functions

November 4, 2015
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Trap and cap: Avoid division-by-zero and domain errors when evaluating functions

Statistical programmers often need to evaluate complicated expressions that contain square roots, logarithms, and other functions whose domain is restricted. Similarly, you might need to evaluate a rational expression in which the denominator of the expression can be zero. In these cases, it is important to avoid evaluating a function […] The post Trap and cap: Avoid division-by-zero and domain errors when evaluating functions appeared first on The DO Loop.

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“Another reminder that David Brooks is very good at being David Brooks”

November 4, 2015
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Outsourcing this one to Palko. The post “Another reminder that David Brooks is very good at being David Brooks” appeared first on Statistical Modeling, Causal Inference, and Social Science.

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Neuroscience research in Baltimore

November 4, 2015
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Joshua Vogelstein sends along these ads for students, research associates, and postdocs in his lab at Johns Hopkins University: Our goal is to work together with neuroexperimentalists to discover fundamental principles governing the relationship between mind and brain, via building and deploying open source petascale tools that run at scale on open access data. This […] The post Neuroscience research in Baltimore appeared first on Statistical Modeling, Causal Inference, and…

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Course Announcement: 36-401, Modern Regression, Fall 2015

November 4, 2015
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For the first time, I will be teaching a section of the course which is the pre-requisite for my spring advanced data analysis class. This is an introduction to linear regression modeling for our third-year undergrads, and others from related majors;...

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

November 4, 2015
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Attention conservation notice: I have no taste. Walter Jon Williams, Brig of War Mind candy historical adventure fiction: a tale of derring-do and angst in the nascent American navy during the war of 1812. It was written before Williams turned to s...

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On the Nature of Things Humanity Was Not Meant to Know

November 4, 2015
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Attention conservation notice: A ponderous, scholastic joke, which could only hope to be amusing to those who combine a geeky enthusiasm for over-written horror stories from the early 20th century with nerdy enthusiasm for truly ancient books. I wish...

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Housekeeping Notes

November 4, 2015
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Blogging will remain sparse while I teach, finish the book, write grant proposals, try not to screw up being involved in a faculty search, do all the REDACTED BECAUSE PRIVATE things, and dream about research. In the meanwhile: A Twitter account, ope...

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Kriging in Perspective (Teaching outtakes)

November 4, 2015
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Attention conservation notice: 11 pages of textbook out-take on statistical methods, either painfully obvious or completely unintelligible. I wrote up some notes on kriging for use in the regression class, but eventually decided teaching that and co...

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Apply! (The Call to Pittsburgh)

November 4, 2015
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The CMU Statistics Department is conducting two faculty searches, one for teaching-track and one for tenure-track faculty, and I find myself on the search committee. (This feels extra bizarre because I could swear I just came here about two years ago...

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Statbusters: Games people play with the placebo effect

November 3, 2015
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In the first two chapters of Numbersense, I discuss how people game statistics, and why gaming is inevitable. I have also written about the placebo effect before. Another article has appeared covering the same topic -- the industry doesn't like the fact that more and more drugs fail to clear the "placebo" hurdle; and the industry thinks the problem is that the placebo effect is mysteriously increasing over time. What…

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Learning to Love Bayesian Statistics

November 3, 2015
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Learning to Love Bayesian Statistics

At Strata NYC 2015, O'Reilly Media's data science conference, I gave a talk called "Learning to Love Bayesian Statistics".  The video is available now:The sound quality is not great, and the clicker to advance the slides was a little wonky, but ot...

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My job here is done

November 3, 2015
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My job here is done

It was cool, back in the day, to be mocked in the House of Commons: And of course I was happy a few months ago to be cited by the Supreme Court: But the high point of my journalistic career is being mentioned in Private Eye (see above). I can retir...

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RIP GFT

November 3, 2015
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It appears that Google Flu Trends (GFT) has slipped quietly into the night. In a short post to the Google Research blog, the team behind GFT announced that they are "no longer publishing" flu estimates, effectively ending the seven-year-old experiment. The GFT home page now links to some historical datasets. The post was dated August 15, and it appears that mainstream media completely missed it. GFT was one of the…

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Loss Developments via Growth Curves and Stan

November 3, 2015
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Loss Developments via Growth Curves and Stan

Last week I posted a biological example of fitting a non-linear growth curve with Stan/RStan. Today, I want to apply a similar approach to insurance data using ideas by David Clark [1] and James Guszcza [2].Instead of predicting the growth of dugongs (...

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Loss Developments via Growth Curves and Stan

November 3, 2015
By
Loss Developments via Growth Curves and Stan

Last week I posted a biological example of fitting a non-linear growth curve with Stan/RStan. Today, I want to apply a similar approach to insurance data using ideas by David Clark [1] and James Guszcza [2].Instead of predicting the growth of dugongs (...

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VIS 2015 – Friday

November 3, 2015
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VIS 2015 – Friday

The final day of the conference was much shorter, only one full session and then the closing with the capstone. Here is a report on a few more papers, the capstone, a panel left over from Thursday, and a few random tidbits. Running Wrap-Up The running “club” started out well with five runners on Tuesday. … Continue reading VIS 2015 – Friday

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Keep eating those sausages

November 2, 2015
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I am outsourcing this post to Aaron Carroll, whose Upshot column eviscerates the recent claim that eating meat will give you cancer, or that eating meat is the same as smoking cigarettes. While the media is partly culpable for spreading misinformation...

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Stop screaming already: Exaggeration of effects of fan distraction in NCAA basketball

November 2, 2015
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Stop screaming already:  Exaggeration of effects of fan distraction in NCAA basketball

John Ezekowitz writes: I have been reading your work on published effect sizes, and I thought you might be interested in this example, which is of small consequence but grates me as a basketball and data fan. Kevin Quealy and Justin Wolfers published an analysis in The NYT on fans’ effectiveness in causing road teams […] The post Stop screaming already: Exaggeration of effects of fan distraction in NCAA basketball…

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Software from CSHL Genome Informatics 2015

November 2, 2015
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Software from CSHL Genome Informatics 2015

I just returned from the Genome Informatics meeting at Cold Spring Harbor. This was, hands down, the best scientific conference I've been to in years. The quality of the talks and posters was excellent, and it was great meeting in person many...

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On deck this week

November 2, 2015
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Mon: Stop screaming already: Exaggeration of effects of fan distraction in NCAA basketball Tues: My job here is done Wed: The tabloids strike again Thurs: Econometrics: Instrument locally, extrapolate globally Fri: I wish Napoleon Bonaparte had never been born Sat: This is a workshop you can’t miss: DataMeetsViz Sun: You won’t believe these stunning transformations: […] The post On deck this week appeared first on Statistical Modeling, Causal Inference, and…

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Statistics report raises mixed emotions

November 2, 2015
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Statistics report raises mixed emotions

It's gratifying to live through the incredible rise of statistics as a discipline. In a recent report by the American Statistical Association (ASA), we learned that enrollment at all levels (bachelor, master and doctorate) has exploded in the last 5-10...

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Can’t find that data? Search all variables in all data sets

November 2, 2015
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Can’t find that data? Search all variables in all data sets

Sometimes I can't remember where I put things. If I lose my glasses or garden tools, I am out of luck. But when I can't remember where I put some data, I have SAS to help me find it. When I can remember the name of the data set, my […] The post Can't find that data? Search all variables in all data sets appeared first on The DO Loop.

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VIS 2015 – Thursday

November 2, 2015
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VIS 2015 – Thursday

Between the sessions, parties, discussions, running, and the occasional short sleep break, I fell a bit behind on the blogging about VIS 2015. After separate postings for Tuesday and Wednesday, this part covers Thursday. The posting about Friday will be short, but squeezing both days into one felt like a bit too much. BTW, the headings you see … Continue reading VIS 2015 – Thursday

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