January 2014

New BH release 1.51.1-4

January 2, 2014 | Thinking inside the box

A new release of the BH package is now on CRAN and its mirrors. BH provides (a sizeable subset of) the Boost library for C++, particularly the (large) parts delivered as pure template headers not requiring linking. See the BH page for more details... [Read more...]

Looping Through Files

January 2, 2014 | Daniel MarcelinoDaniel Marcelino » R

Today, I finally got inspired to deal with tons of datasets from the Tribunal Superior Eleitoral on the Brazilian elections. The cause of the delay for putting my finger on them was simply to avoid troubles with messy large text files. The set of data I collect consists of above 40... [Read more...]

Quickly Create Dummy Variables in a Data Frame

January 2, 2014 | Randy Zwitch

On Quora, a question was asked about how to fix the error of the randomForest package in R not being able to handle more than 32 levels in a categorical variable. Seeing as how I’ve seen this question asked on Kaggle forums, StackOverflow and elsewhere, here’s the answer: code ... [Read more...]

How to ask for R help

January 2, 2014 | Joseph Rickert

by Stephen Welle, Senior Support Engineer at Revolution Alalytics and Joseph Rickert For someone trying to learn any new technology getting help with a problem on a public forum can be stressful. Knowing where to go, deciding how to pose a question and figuring out how to deal with a ... [Read more...]

Pivoting Data in R Excel-style

January 2, 2014 | Raffael Vogler

(This article is referring to an initial proof-of-concept version of r-big-pivot) I have to admit that I very much enjoy pivoting through data using Excel. Its pivoting tool is great for getting a quick insight into a data set’s structure … Continue reading → The post Pivoting Data in R Excel-style ... [Read more...]

The realized GARCH model

January 2, 2014 | alexios

The last model added to the rugarch package dealt with the modelling of intraday volatility using a multiplicative component GARCH model. The newest addition is the realized GARCH model of Hansen, Huang and Shek (2012) (henceforth HHS2012) which relates the realized volatility measure to the latent volatility using a flexible representation ... [Read more...]

Teaching linear models

January 2, 2014 | Luis

I teach several courses every year and the most difficult to pull off is FORE224/STAT202: regression modeling. The academic promotion application form in my university includes a section on one’s ‘teaching philosophy’. I struggle with that part because I suspect I lack anything as grandiose as a philosophy ... [Read more...]

New version of pqR, now with task merging

January 1, 2014 | Radford Neal

 I’ve now released pqR-2013-12-29, a new version of my speedier implementation of R.  There’s a new website, pqR-project.org, as well, and a new logo, seen here. The big improvement in this version is that vector operations are sped up using task merging. With task merging, ... [Read more...]

Data Science Article on Mashable

January 1, 2014 | [email protected]

I was recently interviewed by Todd Wasserman (an editor for Mashable) for an article about data science.  Todd asked me a bunch of simple questions about the day-to-day life of a data scientist.  I described my experiences working for a Bay … Continue reading →
[Read more...]

PS: Clustering whiskies

January 1, 2014 | ECONinfo » Rblogger

I played some more with the app from yesterday, and deployed it with a more usefull user interface and some new functionality on http://ojessen.shinyapps.io/whiskyTastingsApp/. By the way, thanks to the guys at rstudio.com for hosting the app on their servers. … Weiterlesen → [Read more...]

Happy New Year!

January 1, 2014 | David Smith

It's a brand new year, and the Revolutions blog is now three weeks into its sixth year. Hard to believe that a little over five years ago this was the only R-related blog; now there are more than 450 and the R project and the R community continue to thrive and ... [Read more...]

Shiny Year 2014

January 1, 2014 | Petr Simecek

http://simecek.shinyapps.io/pf2014en/(backup http://glimmer.rstudio.com/simecek/pf2014en/, source on Github)"Pour Felicitér" is a French phrase used by Czech and Slovak to wish a happy new year, but not in French speaking countries. It is dating back to the beginning of 19. century ... [Read more...]

Generalized linear models for predicting rates

January 1, 2014 | John Mount

I often need to build a predictive model that estimates rates. The example of our age is: ad click through rates (how often a viewer clicks on an ad estimated as a function of the features of the ad and the viewer). Another timely example is estimating default rates of ... [Read more...]
1 11 12 13

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)