1219 search results for "tutorial"

Animated map of 2012 US election campaigning, with R and ffmpeg

October 28, 2012
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(Video link here, in case the embedded player doesn’t work for you.) Idea: see if I can mimic the idea behind Ben Schmidt’s lovely video of ocean shipping routes, and apply it to another dataset. But which? “Hmm… what’s another … Continue reading →

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Book Review: R for Business Analytics, A Ohri

October 26, 2012
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Book Review:    R for Business Analytics,    A Ohri

      I've added a recently released book to my list of recommendations (at the amazon carousel to the right), as I've reviewed a copy provided to me via Springer Publishers. The book is R for Business Analytics, authored by A Ohri.&nbsp...

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A Greedy ARMA/GARCH Model Selection

October 26, 2012
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An idea that I have been toying for a while, has been to study the effect of a domain-specific optimization strategy in the ARMA+GARCH models. If you recall from this long tutorial, the implemented approach cycles through all models within a the specified ranges for the parameters and chooses the best model based on the

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Nonnegative Matrix Factorization and Recommendor Systems

October 24, 2012
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Nonnegative Matrix Factorization and Recommendor Systems

Albert Au Yeung provides a very nice tutorial on non-negative matrix factorization and an implementation in python. This is based very loosely on his approach. Suppose we have the following matrix of users and ratings on movies:If we use the information above to form a matrix R it can be decomposed into two matrices...

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Quick notes from Strata NYC 2012

October 24, 2012
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The O'Reilly Strata conferences are always great fun to attend, and this latest installment in New York City is no exception. This one is super-busy though; the conference has been sold out for weeks -- and not just marketing-sold-out, it's fire-department-sold out. It's non-stop conversations and presentations, and it's tough to move through the hallways in between. Nonetheless, I...

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Displaying Your Data in Google Earth Using R2G2

October 24, 2012
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Displaying Your Data in Google Earth Using R2G2

Have you ever wanted to easily visualize your ecology data in Google Earth? R2G2 is a new package for R, available via R CRAN and formally described in this Molecular Ecology Resources article, which provides a user-friendly bridge between R and the Google Earth interface. Here, we will provide a brief introduction to...

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analyze the general social survey (gss) with r

October 23, 2012
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the general social survey (gss) has served as america's mood ring since 1972.  data-driven social scientists can compare political beliefs by demography, look at attitude trends, make emile durkheim and max weber (pronounced durk-veber) proud.&nbs...

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Basics of JavaScript and D3 for R Users

October 21, 2012
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Basics of JavaScript and D3 for R Users

Hadley Wickham, creator of the ggplot2 R package, has been learning JavaScript and its D3 library for the next iteration of ggplot2 (tentatively titled r2d3?)… so I suspect it’s only a matter of time before he pulls the rest of the … Continue reading →

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ggmcmc – diagnostic plots for MCMC with ggplot2

October 21, 2012
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ggmcmc – diagnostic plots for MCMC with ggplot2

Xavier Fernández i Marín, who maintains the jags package on Gentoo Linux, writes to tell me he is developing the R package ggmcmc. This package is for visualizing Markov Chain Monte Carlo output using ggplot2 graphics and  should complement the … Continue reading →

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Compressed Sensing with R

October 15, 2012
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Compressed Sensing with R

Compressed sensing (CS) is pretty much appealing all current signal processing research community. At the same time, popularity of R language gaining a strong foot in the research and industry. Even though historically MATLAB is a de-facto standard in ...

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