August 2010

RODM Article on the Oracle Technology Network

August 3, 2010 | C

A new article over at OTN demonstrates the new RODM package that allows you to control Oracle Data Mining within the database itself using R.  This and the recent announcement over at Revolution Analytics both reveal more solutions for proces...
[Read more...]

countrycode R package

August 3, 2010 | jackman

I am digging this countrycode package in R I just found, written by a UM grad student Vincent Arel-Bundock. Very nice. Thanks! countrycode("2","cown","iso3c") [1] "USA" It would be better if the package could handle failed matches a little more gracefully: e.g., __ countrycode(c(2,730,818),"cown","iso3c") [1] "USA" ... [Read more...]

Image Data and Classification with R

August 3, 2010 | » R

03.08.2010 In this post i would like to demonstrate the ability of R to handle and classify image data with the help of ImageJ and Rserve bundled and implemented in Bio7. In general R is a very useful application for image analysis and plenty of “pure” R packages for image analysis ... [Read more...]

Announcing Big Data for Revolution R

August 3, 2010 | David Smith

I've hinted this was coming a few times before, but with today's press release the announcement is official: the next release of Revolution R Enterprise will include "Big Data" capabilities thanks to the new RevoScaleR package. We're pretty excited at how it's turned out: it's kinda amazing to be able ... [Read more...]

JSM 2010 [day 2]

August 3, 2010 | xi'an

After a very good early run in Stanley Park, I went to a morning session on new statistical challenges in genetics, but unfortunately could not keep focussed enough (due to a very short night, still being not tuned to Pacific time!) so I ended up chatting with Sid Chib at ...
[Read more...]

RcppExamples 0.1.1

August 2, 2010 | Thinking inside the box

On Friday, I quickly provided a new release of RcppExamples, our example package for using Rcpp, to CRAN. Very little content has been updated --- and a new TODO file even notes that we need to add more documentation for the new Rcpp API. And update... [Read more...]

inline 0.3.6

August 2, 2010 | Thinking inside the box

A couple of days ago, Romain released inline release 0.3.6 to CRAN. This is a maintenance release with no user-visible changes. However, as it captures compiler errors more directly, it should help us debug Rcpp on recalcitrant platforms such as Sol... [Read more...]

On the Palin effect

August 2, 2010 | David Smith

Do Vice-Presidential candidates have any effect on the outcome of Presidential elections in the US? Some past research suggested their impact was negligible, but the 2008 election seems to have changed all that, at least in the case Sarah Palin. As reported on the Everyday Politics blog, a new paper (co-authored ... [Read more...]

Summer hiatus

August 2, 2010 | Ken Kleinman

We're taking a break from posting for most of August. We'll be back in a month with new examples, including R- and SAS-applicable tricks and tools.Please drop us any ideas in the comments or by e-mail. We love feedback of any kind.
[Read more...]

JSM 2010 [day 1]

August 2, 2010 | xi'an

The first day at JSM is always a bit sluggish, as people slowly drip in and get their bearings. Similar to last year in Washington D.C., the meeting takes place in a huge conference centre and thus there is no feeling of overcrowded [so far]. It may also be ...
[Read more...]

Summary plots

August 2, 2010 | respiratoryclub

So, when you first look at some data, it’s helpful to get a feel of it. One way to do this is to do a plot or two. I’ve found myself continuously doing the same series of plots for different datasets, so in the end I wrote this ... [Read more...]

Using xBalance with MatchIt

August 1, 2010 | Mark Fredrickson

In a previous post, I demonstrated how to create a propensity score matching, test balance, and analyze the outcome variable using the optmatch and RItools packages. The same strategy can be used with other matching algorithms, for example the various methods included in the MatchIt package. I’ll use the ... [Read more...]

Margin Constraints with LSPM

August 1, 2010 | Joshua Ulrich

When optimizing leverage space portfolios, I frequently run into the issue of one or more f$ ([Max Loss]/f) being less than the margin of its respective instrument.  For example, assume the required margin for an instrument is $500, f$ is $100, an...
[Read more...]

NetLogo-R-Extension

August 1, 2010 | Shige

Here is a bridge between NetLogo and R, which looks very interesting. But I was not able to get it work on my Ubuntu box (running the latest R).
[Read more...]
1 … 8 9 10 11

Copyright © 2022 | MH Corporate basic by MH Themes

View Mobile Site

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)