Dear MilanoR friends, I am just back from UseR 2013 in Albacete (Spain) and I would like to share. Thanks First of all I would like to thank all staff from the conference organizer committee and personnel for the excellent … Continue reading →

R news and tutorials contributed by (552) R bloggers

Dear MilanoR friends, I am just back from UseR 2013 in Albacete (Spain) and I would like to share. Thanks First of all I would like to thank all staff from the conference organizer committee and personnel for the excellent … Continue reading →

the surveillance epidemiology and end results program is the aggregation of all cancer registry statistics in the united states. created by congressional decree, seer has captured a nationally-representative quarter of american cancer incidence s...

It can be fairly common to find missing values in a dataset. Having only a few missing values isn’t generally a problem and those records can be deleted listwise. In other words the entire record is simply removed from the analysis. The problem is even with a limited amount missing data, that can translate into

Partial Least Squares Regression:This week I will be doing some consulting around Structural Equation Modeling (SEM) techniques to solve a unique business problem. We are trying to identify customer preference for various products and traditional regression is not adequate because of the high dimensional component to the data set along with the multi-colinearity of the variables. PLS is a...

R provides us with excellent resources to mine data, and there are some good overviews out there: Yanchang’s website with Examples and a nice reference card The rattle-package that introduces a nice GUI for R, and Graham William’s compendium of tools The caret-package that offers a unified interface to running a multitude of model builders.

I had a great time at useR 2013 in Albacete, Spain. The food was great, the people were fun and the weather was hot. A pleasant surprise was that I won the useR data analysis contest with my submission “Modeling Match Results in La Liga Using a Hierarchical Bayesian Poisson Model.” It was a fun exercise modeling football...

The Sydney Users of R Forum (SURF) were kind enough to host me two days (well, three with the traveling ...) ago for an hour-long talk on Rcpp. Apparently, it set a new attendance record for this R user group. My thanks to Louise and Eugene for hosti...

List comprehensions in Python or Haskell are popular and useful tools to filter a list given some predicates. The foreach package by Revolution Analytics gives us a handy interface to list comprehensions in R.Quicksort is a recursive algorithm to ...