152 search results for "iris"

Tracking down errors in R

January 29, 2013
By

It's that moment we all know and love, somewhere in our code something has gone wrong. We think we have done everything right, but instead of expected glory we find only terse red text lain below our lintel. This can be very frustrating, and trouble shooting these issues can often be very time consuming. All is not lost. There are a...

Read more »

European Migration

January 13, 2013
By
European Migration

Last week on the radio I heard a story of southern Europeans and Irish looking for better times in northern Europe. I heard the tale of an Italian academic who left Italy to end up waiting tables in an Italian restaurant in the Netherlands. Obviously t...

Read more »

R code and data for book “R and Data Mining: Examples and Case Studies”

January 2, 2013
By
R code and data for book “R and Data Mining: Examples and Case Studies”

R code and data for book “R and Data Mining: Examples and Case Studies” are now available at http://www.rdatamining.com/books/rdm/code. An online PDF version of the book (the first 11  chapters only) can also be downloaded at http://www.rdatamining.com/docs. Below are its … Continue reading →

Read more »

My Intro to Multiple Classification with Random Forests, Conditional Inference Trees, and Linear Discriminant Analysis

December 27, 2012
By
My Intro to Multiple Classification with Random Forests, Conditional Inference Trees, and Linear Discriminant Analysis

After the work I did for my last post, I wanted to practice doing multiple classification.  I first thought of using the famous iris dataset, but felt that was a little boring.  Ideally, I wanted to look for a practice … Continue reading →

Read more »

A simple web application using Rook

December 21, 2012
By
A simple web application using Rook

by Ben Ogorek I'm grateful to Rook for helping me, a simple statistician, learn a few fundamentals of web technology. For R web application development, there are increasingly polished methods available (most notably Shiny ), but you can build one...

Read more »

Predictive Modeling using R and the OpenScoring-Engine – a PMML approach

December 13, 2012
By
Predictive Modeling using R and the OpenScoring-Engine – a PMML approach

On November, the 27th, a special post took my interest. Scott Mutchler presented a small framework for predictive analytics based on the PMML (Predictive Model Markup Language) and a Java-based REST-Interface. PMML is a XML based standard for the description and exchange of analytical models. The idea is that every piece of software which supports the corresponding...

Read more »

R FAQs for the fresh starters

December 4, 2012
By

R, which was largely predominant in the academic world, has started picking up a lot in businesses as well. At least that is what I am witnessing among my colleagues. Lot of people have started experimenting with R, choosing the path to enlightenment. ...

Read more »

The State of Statistics in Julia

December 2, 2012
By

Updated 12.2.2012: Added sample output based on a suggestion from Stefan Karpinski. Introduction Over the last few weeks, the Julia core team has rolled out a demo version of Julia’s package management system. While the Julia package system is still very much in beta, it nevertheless provides the first plausible way for non-expert users to

Read more »

So, What Are You? ..A Plant? ..An Animal? — Nope, I’m a Fungus!

November 28, 2012
By
So, What Are You? ..A Plant? ..An Animal? — Nope, I’m a Fungus!

Lately I had a list of about 1000 species names and I wanted to filter out only the plants as that is where I come from. I knew that Scott Chamberlain has put together the ritis package which obviously can do such things. However, I knew of ITIS before and was keen...

Read more »

OpenScoring: Open Source Scoring of PMML Models via REST

November 27, 2012
By
OpenScoring: Open Source Scoring of PMML Models via REST

The other day I stumbled accross an amazing PMML model API called jpmml.  It's written in Java and supports PMML 4.1 (and older).  Neural networks, random forests, regression and trees PMML models can be consumed and used for scoring.I decide...

Read more »