## The Art of R Programming review – part 4

March 20, 2013
By

As mentioned in part 3 of this series, I'll now touch on some random interesting topics from the remaining chapters in this book in a more structured manner. Chapter 7 covers programming structures, that is, for and while loops, if-else statements, an...

Read more »

## Stan at Google this Thurs and at Berkeley this Fri noon

March 20, 2013
By

Michael Betancourt will be speaking at Google and at the University of California, Berkeley. The Google talk is closed to outsiders (but if you work at Google, you should go!); the Berkeley talk is open to all: Friday March 22, 12:10 pm, Evans Hall 1011. Title of talk: Stan: Practical Bayesian Inference with Hamiltonian Monte [...]

Read more »

## Being locked up in a room with nothing but a bed and food

March 20, 2013
By

Imagine you are locked up in a hospital room with a bed and plenty of food. What do you think you'd be doing when you aren't sleeping? *** Well, some researchers (link) discovered that you'd be eating the food. What a surprise. The New York Times then saw it fit to report this result as "Lost Sleep Can Lead to Weight Gain", which isn't as bad as the lead given…

Read more »

## Got Matrix? Reach for the SAS/IML language

March 20, 2013
By

Someone recently asked a question on the SAS Support Communities about estimating parameters in ridge regression. I answered the question by pointing to a matrix formula in the SAS documentation. One of the advantages of the SAS/IML language is that you can implement matrix formulas in a natural way. The [...]

Read more »

## Shaking the Bayesian Machine

March 20, 2013
By
$Shaking the Bayesian Machine$

Yesterday we were fortunate to have Brad Efron visit our department and gave a seminar. Brad is one of the most famous statisticians in the world and his contributions to the field of statistics are too numerous to list. Probably he is best known for: inventing the bootstrap, for starting the field of the geometry […]

Read more »

## R’s 2012 Growth in Capability Exceeds SAS’ All Time Total

March 19, 2013
By

by Robert A. Muenchen I’m slowly gathering all the data needed to update my ongoing article, The Popularity of Data Analysis Software. The section below is the latest installment. Growth in Capability The capability of all the software in this … Continue reading →

Read more »

## knitr2wordpress and gradient_cloud Revisited

March 19, 2013
By

This post serves three function: It allows me to revisit an old blogpost It let's me test out the new-ish knitr function knti2wp and RWordPress It enables me to avoid the massive ammount of reading I need to do and … Continue reading →

Read more »

## “Ronald Reagan is a Statistician and Other Examples of Learning From Diverse Sources of Information”

March 19, 2013
By

That’s the title of my talk at Montana State University this Thursday (21 Mar). For those of you who happen to be in the area, it’s 3:30-5:00pm in the Procrastinator Theater. I’m also speaking in the statistics seminar from 11-12:15 in the Byker Auditorium in the Chemistry building. Topic: Causality and Statistical Learning. P.S. My [...]

Read more »

## Data structures are important

March 19, 2013
By

I’ve created another D3 example, of QTL analysis for a phenotype measured over time. (Click on the image for the interactive version.) The code is on github. It took me about a day. The hardest part was figuring out the right data structures. A pixel here is linked to curves over there and over there […]

Read more »

## Call for papers for a special issue of Statistical Analysis and Data Mining

March 19, 2013
By

David Madigan sends the following. It looks like a really interesting place to submit papers for both statisticians and data scientists, so submit away! Statistical Analysis and Data Mining, An American Statistical Association Journal Call for Papers Special Issue on … Continue reading →

Read more »

## ENAR highs and lows

March 19, 2013
By

I attended the ENAR meeting in Orlando, Florida, last week. (ENAR = “Eastern North American Region” of the International Biometric Society.) I had a great time, but I did come to the strong realization that what I view as important is distinctly different from what the typical ENAR attendee views as important. (Rafa said, incredulously, […]

Read more »

## Retraction watch

March 19, 2013
By

Here (from the Annals of Applied Statistics). “Thus, arguably, all of Section 3 is wrong until proven otherwise.” As with retractions in general, it makes me wonder about the rest of this guy’s work. Dr. Anil Potti would be pooping i...

Read more »

## Software Carpentry Bootcamp at University of Virginia

March 19, 2013
By

A couple of weeks ago I, with the help of others here at UVA, organized a Software Carpentry bootcamp, instructed by Steve Crouch, Carlos Anderson, and Ben Morris. The day before the course started, Charlottesville was racked by nearly a foot of s...

Read more »

## In search of the honest credit repair shop

March 19, 2013
By

FTC made the headlines recently complaining about inaccurate consumer credit reports. The Wall Street Journal (link) has a typical report on this research. Here's their summary: In the FTC study, 262 of the 1,001 people who reviewed their credit reports spotted at least one potential "material" mistake, such as a credit-card account that wasn't theirs or a late payment that they didn't believe was late. That sounds like a worrisome…

Read more »

## How not to reveal your MySQL DB login/password when sharing code on GitHub or BitBucket?

March 19, 2013
By

Solution: use your ~/.my/cnfInside your ~/.my.cnf file define the connection parameters to your databases. For example, here I define two groups called local and toto:[local]user = rootpassword = ultra_secrethost = localhost[toto]user = capitaine_flamp...

Read more »

## googleVis 0.4.2 with support for shiny released on CRAN

March 19, 2013
By

The new version of googleVis 0.4.2 is now available via CRAN. Many thanks to all who provided feedback on version 0.4.0 and particularly to Sebastian Campbell, John Maindonald and Aonan Zhang. As usual, if you find any issues or bugs, please send us an...

Read more »

## R: Create Watermark for SAS ODS Reports

March 19, 2013
By

Now to see if we can add some watermarks in SAS ODS - I've seen pages on how to create watermarked reports using background images. The first part is creating the background image: we can steal some code from the earlier post on watermarks in R, and ad...

Read more »

## R: Reproducible Research – Watermarks in Plots

March 19, 2013
By

Research is an iterative process: data is constantly being acquired, cleaned, and finalized while the analysis is being conducted. Since we work in a constantly evolving data and program landscape, version control is extremely important when programmin...

Read more »

## Mertz’s reply to Unz’s response to Mertz’s comments on Unz’s article

March 18, 2013
By

Here. And here’s the story so far: Ron Unz posted a long article on college admissions of Asians and Jews with some numbers and comparisons that made their way into some blogs (including here) and also a David Brooks NYT column which was read by many people, including Janet Mertz, who’d done previous research on [...]

Read more »

## Talking Pictures

March 18, 2013
By

A picture talks. ‘If a picture can say a thousand words, the combination of information and imagery could be wort …Continue reading »

Read more »

## An open letter to Senators Cruz and Cornyn, re: cutting the NSF’s Political Science program

March 18, 2013
By

Dear Senators Cruz and Cornyn, I’m an assistant professor of Political Science at Rice University, and I hope that you’ll oppose Senator Coburn’s amendment to de-fund the Political Science program at the National Science Foundation (the Coburn amendment to HR 933 currently before the Senate). Political Science has evolved into a data-intensive, methodologically sophisticated STEM […]

Read more »

## Tibshirani announces new research result: A significance test for the lasso

March 18, 2013
By

Lasso and me For a long time I was wrong about lasso. Lasso (“least absolute shrinkage and selection operator”) is a regularization procedure that shrinks regression coefficients toward zero, and in its basic form is equivalent to maximum penalized likelihood estimation with a penalty function that is proportional to the sum of the absolute values [...]

Read more »

## Tibshirani announces new research result: A significance test for the lasso

March 18, 2013
By

Lasso and me For a long time I was wrong about lasso. Lasso (“least absolute shrinkage and selection operator”) is a regularization procedure that shrinks regression coefficients toward zero, and in its basic form is equivalent to maximum penalized likelihood estimation with a penalty function that is proportional to the sum of the absolute values [...]

Read more »

 Tweet

Email: