1493 search results for "Regression"

What is your favorite R feature?

What is your favorite R feature?

R (www.r-project.org) is a free and strongly functional language and environment for statistical computing. You can explore data sets, make graphical displays of data, run statistical simulations and many more. If you never used R you should give it a try! R beginners: There are many courses, slides and tutorials available for R beginners. We

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More fun with the Failed States Index (and the State Fragility Index)

July 9, 2011
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More fun with the Failed States Index (and the State Fragility Index)

So the other day’s experiment with the Failed States Index and the Polity Data didn’t yield the linear trend I had originally expected.  After all, the two measure fundamentally distinct things.  But perhaps there’s another dataset which will match linearly.  The same people who made polity also put out a dataset called the State Fragility

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GLMM Hell

July 7, 2011
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GLMM Hell

I have been starting to analyze some data I have of repeated counts of salamanders from 5 plots over 4 years. I am trying to develop a predictive model of salamander nighttime surface activity as a function of weather variables. The repeated counting l...

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Descriptive statistics, causal inference, and story time

July 7, 2011
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Dave Backus points me to this review by anthropologist Mike McGovern of two books by economist Paul Collier on the politics of economic development in Africa. My first reaction was that this was interesting but non-statistical so I’d have to either post it on the sister blog or wait until the 30 days of statistics

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Necessity to Explain CDS with A Regime Switching Model

Necessity to Explain CDS with A Regime Switching Model

Examining the determinants of credit default swap (CDS) spreads is a hot topic, CDS spread has displayed siginificant regime switching behaviour since the break of credit crisis, which can be seen from the old graph in the post Credit Default Spread a...

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Even faster linear model fits with R using RcppEigen

Linear regression models are a major component of every applied researcher's toolbox. Obtaining results more quickly is therefore of central importance, particularly when many such models have to be fit. Common examples in this context are Monte Carl...

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Weighting and prediction in sample surveys

July 1, 2011
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A couple years ago Rod Little was invited to write an article for the diamond jubilee of the Calcutta Statistical Association Bulletin. His article was published with discussions from Danny Pfefferman, J. N. K. Rao, Don Rubin, and myself. Here it all is.I'll paste my discussion below, but it's worth reading the others' perspectives too. Especially...

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RcppArmadillo 0.2.25

Following a series of pre-releases, Armadillo version 2.0.0 was announced by Conrad Sanderson earlier in the week. As it happens, it contained another minor build regression so version 2.0.1 followed the next day. We created versions 0.2.24 and 0.2...

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ProjectEuler-Problem 46

June 21, 2011
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ProjectEuler-Problem 46

It was proposed by Christian Goldbach that every odd composite number can be written as the sum of a prime and twice a square. 9 = 7 + 212 15 = 7 + 222 Read More: 461 Words Totally

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Testing Hurst with Multiple Indexes

June 20, 2011
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Testing Hurst with Multiple Indexes

DO NOT TRADE THIS SYSTEM.  YOU VERY EASILY COULD LOSE LARGE AMOUNTS OF MONEY. I am not necessarily recommending the system that I presented in Exploring the Market with Hurst, but I thought it would provide a nice platform to illustrate some backtesti...

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