779 search results for "register"

The Problem with Propensity Scores

April 14, 2015
By
The Problem with Propensity Scores

Are Propensity Scores Useful? Effect estimation for treatments using observation data isn't always straight forward. For example, it is very common that patients who are treated with a certain medication or procedure are healthier than those who are not treated. Those who aren't treated may not be...

Read more »

Recreating the vaccination heatmaps in R

April 9, 2015
By
Recreating the vaccination heatmaps in R

In February the WSJ graphics team put together a series of interactive visualisations on the impact of vaccination that blew up on twitter and facebook, and were roundly lauded as great-looking and effective dataviz. Some of these had enough data available to look … Continue reading →

Read more »

Recreating the vaccination heatmaps in R

April 9, 2015
By
Recreating the vaccination heatmaps in R

In February the WSJ graphics team put together a series of interactive visualisations on the impact of vaccination that blew up on twitter and facebook, and were roundly lauded as great-looking and effective dataviz. Some of these had enough data available to look … Continue reading →

Read more »

Coarse Grain Parallelism with foreach and rxExec

April 2, 2015
By

by Joseph Rickert I have written a several posts about the Parallel External Memory Algorithms (PEMAs) in Revolution Analytics’ RevoScaleR package, most recently about rxBTrees(), but I haven’t said much about rxExec(). rxExec() is not itself a PEMA, but it can be used to write parallel algorithms. Pre-built PEMAs such as rxBTrees(), rxLinMod(), etc are inherently parallel algorithms designed...

Read more »

Kaggle AXA Telematics: Trip Matching

April 1, 2015
By
Kaggle AXA Telematics: Trip Matching

Contributed by Alex Adler as part of NYCDSA Bootcamp 1, February–April 2015. The following is a repost from my personal blog, approved for use by the NYCDSA. The

Read more »

Registration Open for R/Finance 2015!

March 31, 2015
By

You can find registration information and agenda details (as they become available) on the conference website.  Or you can go directly to the registration page.  Note that there's an early-bird registration deadl...

Read more »

R / Finance 2015 Open for Registration

March 31, 2015
By

The annoucement below just went to the R-SIG-Finance list. More information is as usual at the R / Finance page. Registration for R/Finance 2015 is now open! The conference will take place on May 29 and 30, at UIC in Chicago. Building on the success of the previous conferences in 2009-2014, we expect more than 250 attendees from around...

Read more »

rud.is » R 2015-03-30 13:32:08

March 30, 2015
By
rud.is » R 2015-03-30 13:32:08

Over on The DO Loop, @RickWicklin does a nice job visualizing the causes of airline crashes in SAS using a mosaic plot. More often than not, I find mosaic plots can be a bit difficult to grok, but Rick’s use was spot on and I believe it shows the data pretty well, but I also

Read more »

A Speed Comparison Between Flexible Linear Regression Alternatives in R

March 25, 2015
By
A Speed Comparison Between Flexible Linear Regression Alternatives in R

Everybody loves speed comparisons! Is R faster than Python? Is dplyr faster than data.table? Is STAN faster than JAGS? It has been said that speed comparisons are utterly meaningless, and in general I agree, especially when you are comparing apples and oranges which is what I’m going to do here. I’m going to compare a couple of alternatives to...

Read more »

Ensemble Learning with Cubist Model

March 20, 2015
By
Ensemble Learning with Cubist Model

The tree-based Cubist model can be easily used to develop an ensemble classifier with a scheme called “committees”. The concept of “committees” is similar to the one of “boosting” by developing a series of trees sequentially with adjusted weights. However, the final prediction is the simple average of predictions from all “committee” members, an idea

Read more »

Sponsors

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)