## Revolution R Open 3.2.2 now available

September 4, 2015
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Revolution R Open, the enhanced open source R distribution from Revolution Analytics and Microsoft, is now available for download. This update brings multi-threaded performance to the latest update to the R engine from the R Core Group, which includes several improvements and bug fixes. Significant amongst these is default support for HTTPS connections, making it easy to follow the...

## dplyr 0.4.3

September 4, 2015
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dplyr 0.4.3 includes over 30 minor improvements and bug fixes, which are described in detail in the release notes. Here I wanted to draw your attention five small, but...

## Linear models with weighted observations

September 4, 2015
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In data analysis it happens sometimes that it is neccesary to use weights. Contexts that come to mind include: Analysis of data from complex surveys, e.g. stratified samples. Sample...

## Accept payments in shiny app

September 4, 2015
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Have you ever think about accepting payments in your shiny app? Probably not, but now you can start ;) Shiny apps are usually single task, not very heavy websites. It may...

September 3, 2015
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Once again time for the monthly upstream Armadillo update -- version 5.500.2 was released earlier today by Conrad. And a new and matching...

## ABC model choice via random forests [and no fire]

September 3, 2015
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While my arXiv newspage today had a puzzling entry about modelling UFOs sightings in France, it also broadcast our revision of Reliable ABC model choice via random forests, version...

## On NCDF Climate Datasets

September 3, 2015
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Mid november, a nice workshop on big data and environment will be organized, in Argentina, We will talk a lot about climate models, and I wanted to play a little...

## Introduction to Hypothesis Driven Development — Overview of a Simple Strategy and Indicator Hypotheses

September 3, 2015
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This post will begin to apply a hypothesis-driven development framework (that is, the framework written by Brian Peterson on how … Continue reading →

## How do you know if your model is going to work? Part 1: The Problem

September 3, 2015
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by John Mount (more articles) and Nina Zumel (more articles) of Win-Vector LLC "Essentially, all models are wrong, but some are useful." George Box Here's a caricature of a...

## Free R Help

September 3, 2015
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Today I am giving away 10 sessions of free, online, one-on-one R help. My hope is to get a better understanding of how my readers use R, and the...

## xkcd survey and the power to shape the internet

September 2, 2015
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The xkcd survey If you’ve never heard of xkcd, it’s “ webcomic of romance, sarcasm, math, and language” created by Randall Munroe. Also, if you’ve never heard of...

## Logistic Regression in R – Part Two

September 2, 2015
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$Logistic Regression in R – Part Two$

My previous post covered the basics of logistic regression. We must now examine the model to understand how well it fits the data and generalizes to other observations. The...

## reaching transcendence for Gaussian mixtures

September 2, 2015
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“…likelihood inference is in a fundamental way more complicated than the classical method of moments.” Carlos Amendola, Mathias Drton, and Bernd Sturmfels arXived a paper this Friday on “maximum...

## How do you know if your model is going to work? Part 1: The problem

September 2, 2015
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Authors: John Mount (more articles) and Nina Zumel (more articles). “Essentially, all models are wrong, but some are useful.” George Box Here’s a caricature of a data science project:...

## Top 10 Reasons why you should attend the EARL R London Conference

September 2, 2015
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On September 14th-16th Mango Solutions are running the EARL ( Effective Applications of the R Language) Conference for all users, enthusiasts and beginners of the R programming language. It...

September 2, 2015
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by Andrie de Vries Just more than a year ago I cobbled together some code to work with the (then) new version of Google Sheets. You can still find...

## Correction For Spatial And Temporal Auto-Correlation In Panel Data: Using R To Estimate Spatial HAC Errors Per Conley

September 2, 2015
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Darin Christensen and Thiemo Fetzer tl;dr: Fast computation of standard errors that allows for serial and spatial auto-correlation. Economists and political scientists often employ panel data that track units...

## Mathematical annotations on R plots

September 2, 2015
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I’ve always struggled with using plotmath via the expression function in R for adding mathematical notation to axes or legends. For some reason, the most obvious way to write...

## Unit Converter

September 1, 2015
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Introduction Dan continues to crank out book chapter-length posts, which probably means that I should jump in before getting further behind…so here we go. In the next few posts, I’d...

## Logistic Regression in R – Part One

September 1, 2015
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$Logistic Regression in R – Part One$

Please note that an earlier version of this post had to be retracted because it contained some content which was generated at work. I have since chosen to rewrite...

## Yahoo Finance (CSI) Data Quirks. Or Why is the ROC not Stable?

September 1, 2015
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Rotational strategies on ETFs have been a common occurrence on this blog, and I have been using something similar for real life trading for about two years now. Readers...

## Looking after Datasets

September 1, 2015
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by Antony Unwin University of Augsburg, Germany David Moore's definition of data: numbers that have been given a context. Here is some context for the finch dataset: Fig 1:...

## Learning Italian with rvest and Duolingo

September 1, 2015
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By Aimee Gott,  R Consultant, Mango Solutions Over the last month I have found multiple reasons for needing to scrape web pages for information. This started out with...

## Reasons to Learn R

September 1, 2015
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A new blog post over at Pluralsight describes reasons R has been generating a great deal of interest in recent days:  http://blog.pluralsight.com/r-programming-language.

## Bayesian regression models using Stan in R

September 1, 2015
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It seems the summer is coming to end in London, so I shall take a final look at my ice cream data that I have been playing around with...

## About to teach Statistical Graphics and Visualization course at CMU

August 31, 2015
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I’m pretty excited for tomorrow: I’ll begin teaching the Fall 2015 offering of 36-721, Statistical Graphics and Visualization. This is a half-semester course designed primarily for students in our...

## likelihood-free inference in high-dimensional models

August 31, 2015
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“…for a general linear model (GLM), a single linear function is a sufficient statistic for each associated parameter…” The recently arXived paper “Likelihood-free inference in high-dimensional models“, by Kousathanas...

## Revolution R Enterprise Now Available in the Cloud on Azure Marketplace

August 31, 2015
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by Richard Kittler, Revolution R Enterprise PM, Microsoft Advanced Analytics Revolution is excited to announce the availability of its latest release of Revolution R Enterprise 7.4.1 (RRE) as a...