June 2014

Varian on big data

June 15, 2014 | Rob J Hyndman

Last week my research group discussed Hal Varian’s interesting new paper on “Big data: new tricks for econometrics”, Journal of Economic Perspectives, 28(2): 3–28. It’s a nice introduction to trees, bagging and forests, plus a very brief entree to the LASSO and the elastic net, and to slab and spike ... [Read more...]

How Can I Learn R?

June 15, 2014 | Isaac Petersen

Many visitors of the site have expressed interest in learning R, so I’ve put together a list of beginning resources for learning R: Use this intro to R: http://www.statmethods.net/ Check out[...] The post How Can I Learn R? appeared first on Fantasy Football Analytics. [Read more...]

DE solution in R (nonlinear oscillator)

June 15, 2014 | Dan Kelley Blog/R

Introduction The function lsoda() from the deSolve package is a handy function for solving differential equations in R. This is illustrated here with a classic example: the nonlinear oscillator. Theory As explained in any introductory Physics textbook, the nondimensionalized oscillator equation can be simplified to provided that , i.e. in ... [Read more...]

Specifying complicated groups of time series in hts

June 14, 2014 | Rob J Hyndman

With the latest version of the hts package for R, it is now possible to specify rather complicated grouping structures relatively easily. All aggregation structures can be represented as hierarchies or as cross-products of hierarchies. For example, a hierarchical time series may be based on geography: country, state, region, store. ... [Read more...]

Creating Inset Map with ggplot2

June 14, 2014 | Arnold Salvacion

According to wiki.GIS.com one of the reason for using inset map is to provide a reference for an area for unfamiliar readers.  Inset map is also considered a great asset for cartographers.  Most of the GIS software available in the market hav...
[Read more...]

R and Vertica

June 14, 2014 | Aviad Klein

I’ve been spending the last few months working my way through the integration of R and Vertica, and will try to keep here things that I find handy. I’m quite sad to see there is not much about this Vertica feature on the web, that’s a little ... [Read more...]

Announcing ESGtoolkit v0.1

June 14, 2014 | Thierry Moudiki's blog

I’m pleased to announce the release on CRAN repositories, of our new R package : ESGtoolkit. It’s a set of tools for Monte Carlo simulation of various models, involved in the construction of an Economic Scenario Generator (ESG),  such as : equilibrium and no-arbitrage short … Continue reading →
[Read more...]

RGolf: NGSL Scrabble

June 14, 2014 | Bogumił Kamiński

It is last part of RGolf before summer. As R excels in visualization capabilities today the task will be to generate a plot.We will work with NGSL data - a list of 2801 important vocabulary words for students of English as a second ... [Read more...]

European talks. June-July 2014

June 14, 2014 | Rob J Hyndman

For the next month I am travelling in Europe and will be giving the following talks. 17 June. Challenges in forecasting peak electricity demand. Energy Forum, Sierre, Valais/Wallis, Switzerland. 20 June. Common functional principal component models for mortality forecasting. International Workshop on Functional and Operatorial Statistics. Stresa, Italy. 24–25 June. Functional time ... [Read more...]

Hollywood loves orange and blue

June 13, 2014 | David Smith

Ever since the days of digital film processing, cinematographers have had free rein to recolor their shots in any way they like, without the hassle of chemical developing systems from the old film days. The Coen Brothers' Oh Brother Where Art Thou was the first Hollywood film to use this ... [Read more...]

Brazil’s Host Advantage

June 13, 2014 | diffuseprior

If history can tell us anything about the World Cup, it’s that the host nation has an advantage of all other teams. Evidence of this was presented last night as the referee in the Brazil-Croatia match unjustly ruled in Brazil’s favour on several occasions. But what it is ... [Read more...]

trying to speed up Metropolis… and failing!

June 12, 2014 | xi'an

A while ago (but still after Iceland since I used the thorn rune as a math symbol!), I wrote the following post draft as a memo. Now that Marco Banterle, Clara Grazian and myself have completed our delayed acceptance paper, it may be of interest to some readers to see ... [Read more...]
1 5 6 7 8 9 12

Never miss an update!
Subscribe to R-bloggers to receive
e-mails with the latest R posts.
(You will not see this message again.)

Click here to close (This popup will not appear again)