This semester I'm teaching from Hastie, Tibshirani, and Friedman's book, The Elements of Statistical Learning, 2nd Edition. The authors provide a Mixture Simulation data set that has two continuous predictors and a binary outcome. This data is used to demonstrate classification procedures by plotting classification boundaries in the two predictors. For example, the figure below
Beginning 2013 I made a post plotting unemployment in Europe. Last year I did the same. Now that the unemployment numbers of December are on Eurostat, I am making...
It has been possible for some years to launch a web map from within R. A number of packages for doing this are available, including: RgoogleMaps, an interface to the...
01.02.2015 I released the Linux version of Bio7 2.0 (see screenshot below). For an overview of the new Bio7 features follow the link: Bio7 2.0 new features Added Linux...
A couple of days ago, I posted a recipe on the F1DataJunkie blog that described how to calculate track position from laptime data. Using that information, as well as...
*Today, Carl Boettiger gave a tutorial on the ROpenSci project and how to use their many packages to connect to online data repositories to retrieve...
Thanks to everyone at the Chicago R User Group for giving me such a warm welcome for my presentation last night. In my talk, I gave an introduction to...
A new minor release of littler is available now. Several examples were added or extended: a new script check.r to check a source tarball with R CMD check after loading...
Match.com will bring more love to the planet than anything since Jesus Christ (Gary Kremen, founder of Match.com) Charlie is a brilliant 39 years old mathematician living in Massachusetts....
World wide quantitative easing does not seem to end. I live and work in Japan which has the lowest interest rate.Thanks to Quandl and RStudio, I can easily get the data of...
So recently, I tried to combine Flexible and Elastic Asset Allocation. The operative word being–tried. Essentially, I saw Flexible Asset … Continue reading →
by Joseph Rickert With a membership that spans the entire Bay Area and the ability to hold meetings from San Jose to San Francisco, the Bay Area useR Group...
A Bayes factor (BF) is a statistical index that quantifies the evidence for a hypothesis, compared to an alternative hypothesis (for introductions to Bayes factors, see here, here or...
Sometimes the universe surprises us. In this case, it was in a good way and we genuinely appreciated it. Earlier this week we learned that the Infoworld Testing Center...
In a recent article at opensource.com, I offer up some reasons why now is the time to learn R: data scientists are in high demand, R is the natural...
Great news for Shiny and R Markdown enthusiasts! An Interactive Reporting Workshop with Shiny and R Markdown is coming to a city near you. Act fast as only 20...
By Mark Sellors – Senior IT Consultant, UK. In a move that further validates the entire R community, our good friends and colleagues at Revolution Analytics announced their acquisition...
A new release 0.2.12 of RInside is now on CRAN. RInside provides a set of convenience classes which facilitate embedding of R inside of C++ applications and programs,...
This is the third part of the sequence of shopping carts in-depth analysis. We processed initial data in the required format, did the exploratory analysis and started the in-depth analysis...
Version 0.7-3 of rClr (source code also on GitHub), a package to access arbitrary .NET code seamlessly in-process, has just been released. The package was first introduced a year...
Introduction The mapdata R package contains a coastline called worldHires which is contained within a text file with a bit over 2 million lines. Since the coastlineWorldFine dataset in...
IntroductionIn case you've been living under a rock, there's been a lot of chatter in the financial world late about the price of oil going down. Way,...
Just a warning: double check your return types in R, especially when using different modeling packages. We consider ourselves pretty familiar with R. We have years of experience, many...
by Norman Matloff You've heard that graphics processing units — GPUs — can bring big increases in computational speed. While GPUs cannot speed up work in every application, the...
We released googleVis version 0.5.8 on CRAN last week. The update is a maintenance release for the forthcoming release of R 3.2.0. Screen shot of some of the Google...
Over and over, when talking with people who are starting to learn data science, there’s a frustration that comes up: I don’t know which programming language to start with.”...
Lately I have been involved in organising forecasting competition for undergraduate students. The obvious goal is to find someone with forecasting power who would potentially be interested in internship...
On Cross Validated, I had a rather extended discussion with a user about a probability density as I thought it could be decomposed in two manageable conditionals and simulated...
A new release 0.13.1 of matrixStats is now on CRAN. The source code is available on GitHub. What does it do? The matrixStats package provides highly...
Plotly: collaborative, publication-quality graphing.
